224 valkyrie go to parts list

Jun 10, 2013
556
18
18
Fenton. michigan
#1
Since there has been alot of mixed results with this cartridge maybe the guys that have it figured out can post what ammo/parts/barrels/uppers/lowers/gas blocks etc were used and share ONLY the top notch stuff. Been reading for 2 weeks every thread and comment on this cartridge and its a lot of info. If you had a bad experience with something please share that on another thread. Thanks for sharing. PLease feel free to post pics.

Based on several people having good results with the Craddock precison upper thats definetely a good part.
 
Likes: Raffica762

Subwrx300

Sergeant of the Hide
Jan 15, 2014
732
346
63
Cedar Springs, MI
#2
My 224V built as follows:
  • 26" +2 Gas 7.5T Rainier Ultramatch Fluted Barrel (they have since made 26" barrels +3 gas system) $500
  • Superlative Arms Bleed off block .936" $100
  • Aeroprecision M4E1 Enhanced Upper/lower matched set $550
  • MPA Vertical grip - need to drill hole for safety select spring; super easy mod. $80
  • Calvin Elite 1.5lb single stage - Fully Adjustable Position Trigger (best precision AR15 trigger I've run of 5+ triggers!)$275
  • Magpul PRS Gen 3 stock $225
  • JP Silent Captured Spring - standard buffer weights; using green (+1) heavier spring, may go to yellow. $150
  • Brownells 6.8 bolt and BCG (great value and wipes very clean in one pass) $100
  • Thunder Beast CB Brake for Ultra 9 suppressor. $125
  • Nightforce ATACR 4-16 scope with High NF rings 2200
Total w/o optic: $2105
With optic: $4,305

Shoots great! Average .5-75 moa depending on bullet and load.
20181203_145456.jpg 20181203_145506.jpg 20181203_145155.jpg 20181130_184524.jpg target_image-1.jpg
Shot above at 1060 yds with 88ELD handloads.
 
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Likes: Hardpan
Feb 22, 2017
12
0
1
#3
Can you explain the benefits or disadvantages of a +2 gas system over a standard rifle length. I'm looking at either a Wilson Combat 22" 6.5 twist with a rifle length gas or a jp enterprise 22" 7 twist with a rifle length +2 gas system.
 

GrandpaDeadLegs

Sergeant of the Hide
May 7, 2018
139
76
28
#4
The super long barrel needs to have an accommodation made for it in the gas system, and the captured spring helps a little with that as well I suppose. AR platform wasn't really made up for two foot plus long barrels! But we make it work.. mine is 24.5 and does well. All the way to 26 is supposed to gain velocity so aim high :)
 
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Subwrx300

Sergeant of the Hide
Jan 15, 2014
732
346
63
Cedar Springs, MI
#5
100% agreement with @GrandpaDeadLegs ... I've found that a longer than standard gas system is nearly a necessity for barrels longer than 20-22" depending on cartridge. The more powder you burn, the higher the pressure; the heavier bullet, generally, the slower the powder you need. Combine those in a long barrel heavy bullet rifle (224v, 6.5CM AR10 etc, for example) and more gas pressure exists longer in the barrel. Enter dwell time tuning....

The rifle length gas system is 12". So a typical 18" barrel has 6" of "dwell time" (not the correct way to quantify it but it doesn't require the math and easier to understand in terms of inches). If you go to a 22" barrel, there is now 10" of "dwell time" which is a ~66% increase in dwell time>. This can be very detrimental to brass and precision because bolt carrier group tries to start unlocking at about the same time as the 18" barrel but bullet still has to travel another 6" before exiting muzzle. This is bad.

If you add length to gas system you can keep the approximate dwell time similar and reduce early unlocking but, longer barrels can be a $@$&+ to tune. One click is too much gas two clicks is too little and then you need to tune buffer and spring.

In a perfect world, we would find the optimal gas system lengths for 20, 22, 24 and 26" barrels to make them easy to tune and more reliable but until the Valkyrie, a 24" barrel 223 was a bit uncommon and more of a novelty. The 224V was designed around a 22-24" barrel, so we may start seeing new gas lengths to maximize precision/reliability.
 
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Likes: lash

lash

Swamp Rat
Sep 28, 2012
3,527
1,233
113
59
Central Florida
#7
100% agreement with @GrandpaDeadLegs ... I've found that a longer than standard gas system is nearly a necessity for barrels longer than 20-22" depending on cartridge. The more prefer you burn the higher the pressure; the heavier bullet, generally, the slower the powder. Combine those in a long barrel heavy bullet rifle (224v, 6.5CM AR10 etc, for example) and more gas exists longer in the barrel. Enter dwell time tuning....

The rifle length gas system is 12". So a typical 18" barrel has 6" of "dwell time" (not the correct way to quantify it but it doesn't require the math and easier to understand in terms of inches). If you go to a 22" barrel, there is now 10" of "dwell time" which is a ~66% increase in dwell time>. This can be very detrimental to brass and precision because bolt carrier group tries to start unlocking at about the same time as the 18" barrel but bullet still has to travel another 6" before exiting muzzle. This is bad.

If you add length to gas system you can keep the approximate dwell time similar and reduce early unlocking but, longer barrels can be a $@$&+ to tune. One click is too much gas two clicks is too little and then you need to tune buffer and spring.

In a perfect world, we would find the optimal gas system lengths for 20, 22, 24 and 26" barrels to make them easy to tune and more reliable but until the Valkyrie, a 24" barrel 223 was a bit uncommon and more of a novelty. The 224V was designed around a 22-24" barrel, so we may start seeing new gas lengths to maximize precision/reliability.
Pretty much, this

My build is similar to yours:
22” Craddock Rock Creek 6.7 twist barrel in a VLTOR MUR upper and Mega lower. Yes, a true Frankenstein-gun.

Magpul PRS gen 2 stock (so rifle length buffer), JP SCS and superlative Arms adjustable block. Geissele SSA-E trigger (though should have gone National Match), and deluxe ergo grip

Oh, and Seekins 15” handguard system and BCM BCS with bolt matched to the barrel. Bushy LRHSi 4.5-18 up top.
 
Jun 10, 2013
556
18
18
Fenton. michigan
#8
Thankyou to all that shared info. I know theres got to be a few more nice ones out there so lets see em. I ordered some parts and will post up in a week or so when i get it together.
 

Subwrx300

Sergeant of the Hide
Jan 15, 2014
732
346
63
Cedar Springs, MI
#10

parts list
craddock precision upper 20in criterion 1-7 w adj gas block
magpul gen 3 buttstock
timney 3lb trigger
area 419 brake(mainly bought for supressor use w/adapter)
spikes tactical lower

now i just need to get out and break her in
Time for you to play hooky from work and get some real work done... Load development! Looking forward to your post! Nice build!
 

padom

SuperMod
Staff member
Mar 13, 2013
6,886
821
113
Southeastern, Pennsylvania
#11
Loving my 224V and 88 ELD-M's with CFE223. Super soft shooting and extremely accurate to 700 which is the furthest Ive shot it to date.

22" Rainier Ultramatch Fluted +2 Gas
MEGA NiB Billet Matched Receiver Set
Seekins SP3R V3 Handguard
Superlative Arms AGB
JP 6.8/224V Bolt Assembly (headspaced to barrel by Rainier)
Toolcraft NiB Carrier
JP SCS Gen2
Magpul PRS Gen3
ERGO Tactical Deluxe
BAD Ambi Safety
Geissele SD-E
Rugged 3 Port QD Brake







88 ELD-M/CFE223 OCW Test





88 ELD-M/ 25.5gr CFE223 Seating Depth Test - 5 shot groups






636yd - 20mph Wind - 88 ELD-M/CFE223

 
Likes: lash

Subwrx300

Sergeant of the Hide
Jan 15, 2014
732
346
63
Cedar Springs, MI
#12
Loving my 224V and 88 ELD-M's with CFE223. Super soft shooting and extremely accurate to 700 which is the furthest Ive shot it to date.

22" Rainier Ultramatch Fluted +2 Gas
MEGA NiB Billet Matched Receiver Set
Seekins SP3R V3 Handguard
Superlative Arms AGB
JP 6.8/224V Bolt Assembly (headspaced to barrel by Rainier)
Toolcraft NiB Carrier
JP SCS Gen2
Magpul PRS Gen3
ERGO Tactical Deluxe
BAD Ambi Safety
Geissele SD-E
Rugged 3 Port QD Brake
Dom, which springs and weights did you end up putting in your SCS for final tune?
 

padom

SuperMod
Staff member
Mar 13, 2013
6,886
821
113
Southeastern, Pennsylvania
#13
Dom, which springs and weights did you end up putting in your SCS for final tune?
Thats a good question. Im just about to swap out the Seekins SP3R V3 handguard to my 220 Thunderbolt/MEGA setup and install the JP MKIII Rapid Config 17.25" hanguard with their ARCA rail on the 224V. Ill check what springs/weights Im running and let you know. Whatever it is, it shoots like a dream.
 

Subwrx300

Sergeant of the Hide
Jan 15, 2014
732
346
63
Cedar Springs, MI
#14
I'm running standard mass (steel) with green spring I believe but feels slightly off. I think one Tungsten weight (maybe two) with yellow spring will help suppressed hotter loads in the node around 2800 with the 88s; they are a bit harsh in current setup. Plus I only have the +2 system on my 26" which they are now using a +3, which would make dwell tuning easier.
 

padom

SuperMod
Staff member
Mar 13, 2013
6,886
821
113
Southeastern, Pennsylvania
#15
I'm running standard mass (steel) with green spring I believe but feels slightly off. I think one Tungsten weight (maybe two) with yellow spring will help suppressed hotter loads in the node around 2800 with the 88s; they are a bit harsh in current setup. Plus I only have the +2 system on my 26" which they are now using a +3, which would make dwell tuning easier.
I can say when I played with various load development with 75's, 80's and 88's....the tune is different for them vs 88's. The 88's cycle 100% and the gas block is maybe a 1/4 of the way open. 75's/80's need more weight and less gas. BCG was cycling too fast.