6mm Dasher

CV_Ag

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Its shooting about 2970 now with 700 rounds on it. But the temp has also dropped about 50 degrees. Same load so could be barrel, could be temp?
 

Milo 2.5

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I've burnt through a couple dasher barrels in my last rifle, and ordered everything today to build a new one. I've been playing with my 223 for a while now and really like cfe223 because there is zero need to weigh each charge. Just powder dump it. Dead on every time.

So, my previous loads on my other barrels match everyone else's on here. 32.4-32.8 varget is money. But has anyone tried cfe223? If it would shoot I'd load all my match ammo on my dillon without a doubt. Seen the new 6.5 staball from Winchester is catching on to dasher guys too.
I did on the first Dasher I started to load for, cfe 223, 105 hybrid, cci 450. The fireform load was great accuracy wise, then 33.5gr shot excellent once fireformed, 2940fps. We ran with that load till Oct, temps dropped up to 50 degrees, and we lost a bunch of speed. The plan was to hunt antelope and deer to 400 yards, being it was not guaranteed I would be present, I had to redo the load with H4895 in a hurry. H4895 not the most stable, but way better than cfe and we shoot it all yr long now w/o incident.
The rifle was built for a 12 yr old, I was not convinced they could overcome any dope discrepancies if it would be used w/o me being there, reason for the switch. The Dad really has no interest in rifles, and the kid retains 33% of what I teach him, lol
 

702lineman

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I did on the first Dasher I started to load for, cfe 223, 105 hybrid, cci 450. The fireform load was great accuracy wise, then 33.5gr shot excellent once fireformed, 2940fps. We ran with that load till Oct, temps dropped up to 50 degrees, and we lost a bunch of speed. The plan was to hunt antelope and deer to 400 yards, being it was not guaranteed I would be present, I had to redo the load with H4895 in a hurry. H4895 not the most stable, but way better than cfe and we shoot it all yr long now w/o incident.
The rifle was built for a 12 yr old, I was not convinced they could overcome any dope discrepancies if it would be used w/o me being there, reason for the switch. The Dad really has no interest in rifles, and the kid retains 33% of what I teach him, lol

Awesome info!! Thank you
 

Milo 2.5

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Awesome info!! Thank you
I also tried cfe on the 2nd dasher with a 110 sierra, FF went well, I could not get it to my expectations once formed though. I thought the slower powder perfect match for the heavier bullet, was not in this case. Ended up shooting RL 16, even slower powder that is a hammer of a load. 205M primer.
 

lte82

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Just tried AR Comp with the Dasher, and it appears to have a lot of potential. It definitely is beating Varget in terms of ES/SD.

105 hybrids, cci 450's, fully fire formed Lapua brass. 400 rounds on a bartlein 5r 7t.

29.5: No chrono data
30.0: 2940 ES 10 SD 3 (10 shots)
30.5: 2976 ES 5 SD 1 (5 shots)

Bolt lift was normal at 29.5 and 30, with a touch of heavier bolt lift at 30.5. Accuracy was great, 1/2 moa or better at 700-1000.
 

Milo 2.5

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Just tried AR Comp with the Dasher, and it appears to have a lot of potential. It definitely is beating Varget in terms of ES/SD.

105 hybrids, cci 450's, fully fire formed Lapua brass. 400 rounds on a bartlein 5r 7t.

29.5: No chrono data
30.0: 2940 ES 10 SD 3 (10 shots)
30.5: 2976 ES 5 SD 1 (5 shots)

Bolt lift was normal at 29.5 and 30, with a touch of heavier bolt lift at 30.5. Accuracy was great, 1/2 moa or better at 700-1000.
I have been kicking around trying AR Comp too, look at the bottom right number of this pic, unheard of, which makes me think AR comp even better in 6BRA
Capture3.PNG,
 

lte82

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Seems pretty wild if this is even close to accurate barrel life wise.

AR Comp @ 2920 FPS
1572823304715.png

Varget @ 2950 FPS
1572823407243.png
 
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Dthomas3523

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Alpha brass:

Ran through a .266 bushing and chamfered mouths. I should have uniformed primer pockets I guess. A lot of them were extremely tight compared to lapua.

My barrel likes 32.6 with lapua and runs around 2960.

32.6 runs 2958 in alpha and no pressure signs.

Apparently my barrel likes 32.2 with alpha brass. I just loaded up 8 rnds 32.2 as zero ammo. Turns out it likes it (of course 🙄). So I did 3 on paper and 5 over magneto.

The rest are 3 or 5 on paper (3 if it wasn’t looking like sub .4 group) and 5 over magneto.

I’m pretty sure 32.3 was my fault on the high round. It was shot number 4 and I’m not the best at shooting groups.

8C165A10-F591-4B41-AB11-B75AD44E51E3.jpeg
 
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MDT_Josh

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Okay, my first Dasher barrel is dead after 2600 rounds and a new one is being spun up as I need to get ready for the NRL finale now 😬

- 26" International Barrels (IBI) M24 1:8"
- Defiance Deviant Elite

Most consistent load:
- 108 ELD-M's @0.035" off
- 31.7 gr Varget
- Lapua FF
- CCI 400's
- 2940 ft/s (up until ~1200) -> 2890 ft/s (up until ~2250) -> 2860 ft/s (until dead)

Lessons learned:
- no more fireforming. I FF'ed 600 pieces of brass by loading long and jamming, but will only be buying Alpha from here on out, or hydro forming
- .104" freebore is too short for the 110's and 115's to really shoot well and have good case capacity
- 2850-2900 ft/s is the sweet spot for the 108's in the Dasher and trace is quite visible
- 108's have a pretty poopoo BC, but they're consistent and go where you want them to

Next Barrel:
- 26" International Barrels (IBI) MTU 1:7.5"
- .104 freebore

I am also going to order a throating reamer and blow that freebore out to .150-.175 and work on those 115 RDF's as well as maybe some 112 Match Burners if I can source them up here for a decent price.

I will try to keep you all updated as I go :)

Josh
 

Hoyt7mm

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I'd suggest a total of .140ish freebore. Seems to work well for 105, 110s, and 112s. 700 down and sitting just above next/shoulder using 112s and .015 jump @ 2890 (pressure at 2930). Usinig IMR4166 after 200 rounds of fire forming (30gr varget, jam .010, .005 crush, 210 primer). Bartlein 5R, 26"
 

jsimonh

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Just picked up 8lbs of Shooters World Precision, anybody have any luck with this powder? Im tired of having to hunt for Varget every time I get low.
 

MDT_Josh

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I'd suggest a total of .140ish freebore. Seems to work well for 105, 110s, and 112s. 700 down and sitting just above next/shoulder using 112s and .015 jump @ 2890 (pressure at 2930). Usinig IMR4166 after 200 rounds of fire forming (30gr varget, jam .010, .005 crush, 210 primer). Bartlein 5R, 26"
Interesting and good to know! We're going to order up a throating reamer and play with extending the freebore incrementally to see where it works best for us :)
 

Scwalker83

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Interesting and good to know! We're going to order up a throating reamer and play with extending the freebore incrementally to see where it works best for us :)
Funny you should mention the 110s SMK, I got a prefit from Criterion, 28" MTU supposedly .104 freebore and my 110 is .02 off at 2.51 oal. Which is longer than I'd like. I'm using your guys mags (MDT) and I removed the binder plate in front to make them work. I wonder if I got a different freebore?

With an Ultra 5 6.5, they're running 2920 with 5sd/9es and sub half.

31 H4895 in Lapua BR brass.
 

mmlook

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I'd suggest a total of .140ish freebore. Seems to work well for 105, 110s, and 112s. 700 down and sitting just above next/shoulder using 112s and .015 jump @ 2890 (pressure at 2930). Usinig IMR4166 after 200 rounds of fire forming (30gr varget, jam .010, .005 crush, 210 primer). Bartlein 5R, 26"
agree,

Just switched to a 0.135" fb, to run 105-115's with 4166

I would probably go to 0.150" if I could


I think with 115's, 0.150" FB, and 0.010" off the lands,
you might get enough case capacity to run H4350 or R16 and get 2900-2950+, without hitting pressure
 

Dthomas3523

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Okay, my first Dasher barrel is dead after 2600 rounds and a new one is being spun up as I need to get ready for the NRL finale now 😬

- 26" International Barrels (IBI) M24 1:8"
- Defiance Deviant Elite

Most consistent load:
- 108 ELD-M's @0.035" off
- 31.7 gr Varget
- Lapua FF
- CCI 400's
- 2940 ft/s (up until ~1200) -> 2890 ft/s (up until ~2250) -> 2860 ft/s (until dead)

Lessons learned:
- no more fireforming. I FF'ed 600 pieces of brass by loading long and jamming, but will only be buying Alpha from here on out, or hydro forming
- .104" freebore is too short for the 110's and 115's to really shoot well and have good case capacity
- 2850-2900 ft/s is the sweet spot for the 108's in the Dasher and trace is quite visible
- 108's have a pretty poopoo BC, but they're consistent and go where you want them to

Next Barrel:
- 26" International Barrels (IBI) MTU 1:7.5"
- .104 freebore

I am also going to order a throating reamer and blow that freebore out to .150-.175 and work on those 115 RDF's as well as maybe some 112 Match Burners if I can source them up here for a decent price.

I will try to keep you all updated as I go :)

Josh
I might give 108eld a go. I shot nothing but 6cm 108eldm factory ammo for a year and like you said, they go pretty much where you tell them.

Curre running 105 hybrids, basically cause that’s what everyone is running in a dasher. Only a few matches in, and have been placing high in club matches. But I don’t feel as confident as I did with the 108.

I’m assuming that’s just because I used the 108 so long. But might be worth experimenting with.
 
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jsimonh

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Posted this on Accurate Shooter and thought I'd share it here for anybody interested in SW powder.

Didn't shoot for accuracy today but shot a few rounds over my magnetospeed V3 to get things rolling. My varget load has been shot for all 1300rds that's on this barrel.

Bighorn TL3, 28" Benchmark 1-7.5, 104 freebore, with a SiCo Omega direct threaded on the end with a flat end cap. Berger 105 hybrid seated .010 off the lands.

55°, light wind, heavy mirage, 100yds

Varget 32.5 - 3019

Shooters World Precision
31 - 2926
31.5 - 2936
32 - 2984
32.5 - 3018

These were just 5 shot averages and I didnt record the SD although all these small groups only varied a few fps for each charge load. I did not experience any pressure indications even though max load for a 107 was listed at 31.3grs on the bottle.
 
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Chevynbow

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Posted this on Accurate Shooter and thought I'd share it here for anybody interested in SW powder.

Didn't shoot for accuracy today but shot a few rounds over my magnetospeed V3 to get things rolling. My varget load has been shot for all 1300rds that's on this barrel.

Bighorn TL3, 28" Benchmark 1-7.5, 104 freebore, with a SiCo Omega direct threaded on the end with a flat end cap. Berger 105 hybrid seated .010 off the lands.

55°, light wind, heavy mirage, 100yds

Varget 32.5 - 3019

Shooters World Precision
31 - 2926
31.5 - 2936
32 - 2984
32.5 - 3018

These were just 5 shot averages and I didnt record the SD although all these small groups only varied a few fps for each charge load. I did not experience any pressure indications even though max load for a 107 was listed at 31.3grs on the bottle.
32.5 of Varget/105 Hyb @3019, even with a 28” is moving...I’m at ~2940 with 32.6 of Varget, 26” and 105 Hyb’s.
 

CV_Ag

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32.5 of Varget/105 Hyb @3019, even with a 28” is moving...I’m at ~2940 with 32.6 of Varget, 26” and 105 Hyb’s.
Just depends on the barrel and chamber. I’m at 3024 with 32.6 of Varget and hybrids out of my 26”.
 

702lineman

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Is 29.5gr xbr under a 107 smk going to be too hot for a ff load? I've always ran 30gr of varget before, but I have a few lbs of xbr I want to use up and save my varget. From my research and from a friend that used to run 6 br, 29.5 is the go to xbr load for 6br
 

Sheldon N

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Is 29.5gr xbr under a 107 smk going to be too hot for a ff load? I've always ran 30gr of varget before, but I have a few lbs of xbr I want to use up and save my varget. From my research and from a friend that used to run 6 br, 29.5 is the go to xbr load for 6br
Should be fine, maybe a bit on the warm side. If you go by Quickload 28.7gr of XBR is equivalent pressure to 30.0gr of Varget. I looked back at my notes and I've FF'd before with 28.5 to 29.0gr XBR behind a 105, I think I settled on 29.0 as the preferred charge and had velocity in the 2800fps range.
 
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702lineman

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Should be fine, maybe a bit on the warm side. If you go by Quickload 28.7gr of XBR is equivalent pressure to 30.0gr of Varget. I looked back at my notes and I've FF'd before with 28.5 to 29.0gr XBR behind a 105, I think I settled on 29.0 as the preferred charge and had velocity in the 2800fps range.

Thanks for the info! Gonna try it out tomorrow and shoot a local match sunday with them. The 30.0 of varget used to shoot amazing considering they were for ff, hopefully these do too. I'll try 29.0 first
 

702lineman

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Just fyi for future reference, 29.5 is too hot. I popped 2 of the 3 primers, cci 400s.

29.0 was ok but primers were just a little flattened. Only shot 3.

So I took sheldon's quickload recommendation of 28.7 to equal 30.0 of varget and it shot great! Sd of 6 and this group for 5 shots. I think it will be plenty good enough for the club match tomorrow 20191123_165911.jpg
 

jsel10

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Anybody here use the norma dasher brass with the .050 longer neck? Looking for some reviews/opinions on it.
 

M_R_Woodard

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I have the Norma chamber and have been happy with the brass. I have 30 pieces with 12 firings on them and the primer pockets are still tight.
 

MDT_Josh

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Finalized my load on the second IBI Dasher barrel yesterday:
- CCI 450
- Lapua FF case
- 31.5 gr Varget
- 108 ELDM @0.010 off
- 2890 ft/s (0.26 MOA, sd 3.1, es 7.1)

Ready to rock and roll for the NRL finale in TX! Going to do a bunch of playing around after that, but this'll do for now :)

Josh
 

Darqusoull13

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Finalized my load on the second IBI Dasher barrel yesterday:
- CCI 450
- Lapua FF case
- 31.5 gr Varget
- 108 ELDM @0.010 off
- 2890 ft/s (0.26 MOA, sd 3.1, es 7.1)

Ready to rock and roll for the NRL finale in TX! Going to do a bunch of playing around after that, but this'll do for now :)

Josh
Love it, good luck at the Finale. I'll hopefully see you at the range! :cool:
 
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King_beardsly

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Finalized my load on the second IBI Dasher barrel yesterday:
- CCI 450
- Lapua FF case
- 31.5 gr Varget
- 108 ELDM @0.010 off
- 2890 ft/s (0.26 MOA, sd 3.1, es 7.1)

Ready to rock and roll for the NRL finale in TX! Going to do a bunch of playing around after that, but this'll do for now :)

Josh
Not a super charged load, but damn near impossible to argue with those results.
 

BoilerUP

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Finalized my load on the second IBI Dasher barrel yesterday:
- CCI 450
- Lapua FF case
- 31.5 gr Varget
- 108 ELDM @0.010 off
- 2890 ft/s (0.26 MOA, sd 3.1, es 7.1)
Just curious why you settled on that particular load instead of one node higher (32.4-32.5gr).
 

MDT_Josh

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Not a super charged load, but damn near impossible to argue with those results.
True, and it seems like low-and-slow is the current trend in top shooters I have talked to. I am happy with how it shoots right now :)

Just curious why you settled on that particular load instead of one node higher (32.4-32.5gr).
Good question! I initially played with the higher node (32.4-32.5 gr) in my last barrel, but had higher speeds than I was wanting and was concerned about pressure. This load I have settled with should be rain/snow safe, whilst still giving me adequate speed and consistency. With the Dasher, I am not sold on trying to break that 3k mark, but would rather settle for a slower and safe load.

Josh
 
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BoilerUP

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Good question! I initially played with the higher node (32.4-32.5 gr) in my last barrel, but had higher speeds than I was wanting and was concerned about pressure.
What kind of speed were you seeing in the "common" higher node? I presume 26" barrel? Were you seeing pressure signs or just concerned you were on the edge?

Apologies for 20 questions, I like seeing folks' reasoning behind their decisions.

Just for an additional data point, I'm running the 108 over 32.4gr Varget and getting 2815fps from a 20" Hawk Hill with .105FB.
 

MDT_Josh

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What kind of speed were you seeing in the "common" higher node? I presume 26" barrel? Were you seeing pressure signs or just concerned you were on the edge?

Apologies for 20 questions, I like seeing folks' reasoning behind their decisions.

Just for an additional data point, I'm running the 108 over 32.4gr Varget and getting 2815fps from a 20" Hawk Hill with .105FB.
No worries and it's good to have discussion.

Yes, I was/am running a 26" barrel and looking back over my data, the 32.4gr node I was initially targeting at the beginning of the year started me in the 2940-2960 ft/s range, but as my barrel sped up, it left me at around 3000-3025 ft/s and started to show pressure at 32.7 gr. Seeing as I was only 0.3 gr below pressure signs and blowing primers in the wet, I decided to slow down my load to 31.7 gr (2940 ft/s) for the remainder of the year.

Starting fresh with this new barrel, I don't have a lot of time to tinker with it before I leave for TX, but after I get back, I will be blowing out the throat a little and seeing if I can't get the 115's to work, as well as running the 108's out longer. I am not sold on the .104" FB on the Dasher anymore for our more modern bullets and think that it should be longer.

Josh
 

702lineman

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Tested a couple loads today with 115 dtacs.

32.5gr varget sd 4 es 11 running 2833 zero vertical spread and pretty much same hole horizontally.

32.8 varget sd 4 es 10 2857 fps. This load was literally same hole. One of the better groups I've ever shot.

Both loads were .018 off lands in a 24in stuteville impact prefit. Not sure of freebore, barrel has 1000rds on it.

BUT.........here is the issue. No pressure with either load, except, the second string I shot of 32.8 to verify, it started raining on me. Still had an sd of 4, but had sticky bolt with rain. 😪
 
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702lineman

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Okay, you’re a little ways past the neck shoulder junction but getting decent speed with out pressure signs

Yeah like I said though, it's only a 24in barrel, so I'm loosing a little. They shot amazing though. Dont really care about speed too much if they will be consistent. If I went out much farther out with the bullet there wouldnt be much touching the neck
 

King_beardsly

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True the start of that boat tail is right at the junction and don’t really allow for much room to play. That really decent speed out of a 24”
 

702lineman

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One thing I'd like to point out about the 115 dtac(2857fps) vs the 105 hybrids(2950fps) is that the 115s have over 100 ft lbs more energy at 1000 yards. There is only .1 mil difference in wind, which is nothing, the the energy on target is a good thing. That's really been my only complaint about my previous dashers. It's kinda hard to see impacts at distance. I'll give feedback after next weekends match at Shield Solutions.