6mm BR

Ranger188

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No, I get what you're saying. My cases are full, I have to tap them to load the bullet.
But that's where I found a great node and have no pressure signs. Maybe the IMR4166
or I got a fast barrel. I bore scoped the barrel several times and still looks great.
Damn thing shoots at that speed.
 

reubenski

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No, I get what you're saying. My cases are full, I have to tap them to load the bullet.
But that's where I found a great node and have no pressure signs. Maybe the IMR4166
or I got a fast barrel. I bore scoped the barrel several times and still looks great.
Damn thing shoots at that speed.
To my point, in QL you'd have to use 31gr of Varget at 107% case fill, 65K psi to get 3030fps. Obviously some difference from 4166(QL doesn't have the newer IMR powders). You'd have to run 29gr of Varget at 100% case fill to keep it below 55K psi using a 26" barrel and a 2.400 COAL.

The BR and BR variants with Lapua SR primer brass do a great job at hiding pressure. You're posting a top-end load. In that case compare it to a pointed 107 going 2900.... because people do run them that fast.
 

padom

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Just got back from testing the 95 TMK over Varget in my 28" Kreiger 6BR. Barrel has 60rd down it.

Tested 3rd each in 0.3gr increments with Varget from 30.0gr to 31.2gr. No pressure, primers round, easy bolt lift at 31.2gr.

31.2gr was sub 0.25moa @100yd 3020 SD 2.. everything was seated 0.015 off lands. Gonna load some up and test them at distance now. Wasnt testing accuracy, just looking for pressure and velocity numbers this outing.

Here guys say they couldnt get 95 TMK to shoot but they were very accurate in my gun all charges and same POI.

Here's the OCW target looking for pressure, not concentrating on accuracy but it still was damn accurate. Going to explore 31.2 - 31.6 to see if im close to pressure and check center of node. Probably 31.4gr final load but we shall see. Should get me around 3040-3050.


 
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47guy

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Just got back from testing the 95 TMK over Varget in my 28" Kreiger 6BR. Barrel has 60rd down it.

Tested 3rd each in 0.3gr increments with Varget from 30.0gr to 31.2gr. No pressure, primers round, easy bolt lift at 31.2gr.

31.2gr was sub 0.25moa @100yd 3020 SD 2.. everything was seated 0.015 off lands. Gonna load some up and test them at distance now. Wasnt testing accuracy, just looking for pressure and velocity numbers this outing.

Here guys say they couldnt get 95 TMK to shoot but they were very accurate in my gun all charges and same POI.
Please keep this updated I’m interested to see were you end up...I’m think about trying the 95g tmk I’m my BRX
 

Southpaw Shooter

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Following, .. been getting really great groups shooting 95gr SST out to 300yds. Not to shabby for a flat back hunting bullet...
 

padom

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lotta potential there for sure...and the 95gTMK has to be a bit better at 200-250fps faster than a 105-108

Here is a side by side comparison of the 105 Hybrid using my go to load which is 2850 fps and the final 95 TMK load I believe where I will stop @ 3040fps. 95TMK has better elevation all the way out to 1000yds (farthest I ran the numbers) and very close in windage to the 105 with a .1 difference.

For as cheap as I got these 500ct boxes of 95 TMK's with the big Powder Valley Sierra sale last month and the accuracy Im seeing, its a no brainer of the 105's for me. About $60 per 500ct box cheaper than the 105 Bergers.
 

padom

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lotta potential there for sure...and the 95gTMK has to be a bit better at 200-250fps faster than a 105-108

Here is a side by side comparison of the 105 Hybrid using my go to load which is 2850 fps and the final 95 TMK load I believe where I will stop @ 3040fps. 95TMK has better elevation all the way out to 1000yds (farthest I ran the numbers) and very close in windage to the 105 with a .1 difference.

For as cheap as I got these 500ct boxes of 95 TMK's with the big Powder Valley Sierra sale last month and the accuracy Im seeing, its a no brainer of the 105's for me. About $60 per 500ct box cheaper than the 105 Bergers.

 
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BoilerUP

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Here is a side by side comparison of the 105 Hybrid using my go to load which is 2850 fps and the final 95 TMK load I believe where I will stop @ 3040fps. 95TMK has better elevation all the way out to 1000yds (farthest I ran the numbers) and very close in windage to the 105 with a .1 difference.
Just curious, what BCs are you using for each bullet?

Thanks!
 

padom

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Just curious, what BCs are you using for each bullet?

Thanks!
Whatever BC used in JBM Ballistics Library


I use JBM Ballistics Calculator for every load I work up and its almost always dead on or very close.


105 Hybrid says 0.275 G7
95 TMK says 1550-3050fps 0.490 G1 so thats what its using. If you get them going above 3050 G1 is 0.500
 
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Tobyboy22

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I'm thinking about getting a 6BR spun up. Do you recommend a 26" or 28" barrel? It will be used primarily in comps.
 

Ranger188

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padom, thanks for posting your info.
Your info mirrors mine. It amazes me how one person can post info and get an argument
form someone that hasn't done the testing but looks at numbers and thinks he's right and you're wrong. (reubenski)
Don't aways limit yourself to what everyone else is doing and think your way is the only way.
 

steve123

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Hey guys I just had to share this crazy small vertical I shot this morning at ""1000Y"" with my 6mmBR - as witnessed by two of my shooting buddy's, Steve and Mark.

I know it's almost unbelievable but that is a mag full consisting of 10 shots. The big group has 4 or 5 shots in it, I'll get back to that soon.

The high one is about 4" above and the rest are into 1.3" vertical, for 9 shots!!!

So if you look closely after expanding the photo there are two holes from my 30 caliber that got poked through this AR400 steel at 200Y many years ago. Those holes just happen to be close to where the larger group of hits from my 6mmBR are. The reason I said 4 or 5 hits is because I didn't hear one of the shots hit the steel. If you look closely at the 10 oclock position on the higher and right-er poked hole there is a graze on the edge of it, at least I think it is, and I'm going to give myself the benefit of the doubt, 😁

This was shot at around 50 degrees in a half value wind of 1-4 mph with a DA of 6000.

Shot from the bed of my truck off the LRI bipod and Traid tactical rear bag. Mausingfield action, Shilen select match prefit, Bighorn barrel nut, TT diamond trigger set at 10oz, GRI Bolthorn chassis, S&B 5-25x56 PM2 in ARC rings.

I'm going to put this same post in the range report forum as well.

DSC00167.JPGDSC00170.JPG
 

high right

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Hey guys I just had to share this crazy small vertical I shot this morning at ""1000Y"" with my 6mmBR - as witnessed by two of my shooting buddy's, Steve and Mark.

I know it's almost unbelievable but that is a mag full consisting of 10 shots. The big group has 4 or 5 shots in it, I'll get back to that soon.

The high one is about 4" above and the rest are into 1.3" vertical, for 9 shots!!!

So if you look closely after expanding the photo there are two holes from my 30 caliber that got poked through this AR400 steel at 200Y many years ago. Those holes just happen to be close to where the larger group of hits from my 6mmBR are. The reason I said 4 or 5 hits is because I didn't hear one of the shots hit the steel. If you look closely at the 10 oclock position on the higher and right-er poked hole there is a graze on the edge of it, at least I think it is, and I'm going to give myself the benefit of the doubt, 😁

This was shot at around 50 degrees in a half value wind of 1-4 mph with a DA of 6000.

Shot from the bed of my truck off the LRI bipod and Traid tactical rear bag. Mausingfield action, Shilen select match prefit, Bighorn barrel nut, TT diamond trigger set at 10oz, GRI Bolthorn chassis, S&B 5-25x56 PM2 in ARC rings.

I'm going to put this same post in the range report forum as well.

View attachment 7179063View attachment 7179064
107s or 105s?
 

txguero

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Anyone have experience with the Hornady 87 BTHP? Picked up a box for cheap and I’m thinking of working up around 29 to 31ish grains of Varget.
 

AMAC79

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Been trying to conserve my Varget lately and have had pretty good luck with H4895
29.3 grains H4895
CCI 450
105 RDF seated .050" off
2855 out of a 24" Benchmark @65F (This lot of H4895 doesn't seem to be very temp stable)

I'm pretty happy with that speed out of a 24" tube.
 

47guy

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Been trying to conserve my Varget lately and have had pretty good luck with H4895
29.3 grains H4895
CCI 450
105 RDF seated .050" off
2855 out of a 24" Benchmark @65F (This lot of H4895 doesn't seem to be very temp stable)

I'm pretty happy with that speed out of a 24" tube.
I just started shooting a BRA and found the same thing with the 4895...from my truck...60ish to 30ish I had about a 30-40fps spread.
 

AMAC79

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I just started shooting a BRA and found the same thing with the 4895...from my truck...60ish to 30ish I had about a 30-40fps spread.
Thats exactly what I've seen from this current lot of 4895 1-1.2fps/degree. It seems like I never had temp issues until this current lot, but most of my H4895 usage has been in a 308 if that may make a difference
 

47guy

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Thats exactly what I've seen from this current lot of 4895 1-1.2fps/degree. It seems like I never had temp issues until this current lot, but most of my H4895 usage has been in a 308 if that may make a difference
im not sure ive never used 4895 until this BRA but i have read a few guys on AS having the same issues.
 

reubenski

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Thanks, I think I’ll play around with that powder and maybe some H4350.
I think 4350 will be interesting. I wanted something that would throw well so I tried StaBall. It hasn't been very consistent though. It seems to be somewhat sensitive temp and exposure to air when you uncork a jug. Need to keep it sealed up.