I haven't seen the temp sensitivity that some claim and that might be due to primers, specifically cci small rifle. Those using cci se to do fine with the magnum primers but have issues with the regular primers. I use federal 205 and haven't seen the temp sensitivity some claim and I shoot it year round for practice and matches. My largest velocity change came from changing lots but otherwise it hasn't been an issue. It is a dirty powder and cakes up breaks fairly regularly but I haven't seen an issue with barrels or cans yet or any issues with accuracy. It does take a little longer to develop a load that I like but hell once I find it I setup the dillon and don't have any issues
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223 A.I. vs 224 Valkyrie
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Powder temp sensitivity has nothing to do with primers lol.
But I’m probably wrong because I’m not the powder wizard like you.
But I’m probably wrong because I’m not the powder wizard like you.
It's hard to tell when you're shooting at 200Y on a fulled sized IPSC. A hits a hit, right!
The barreled action was put together by L.R.I. using a Surgeon 591 action, Bartlein 27" 1-7 5R barrel. I bolted it into the "evil" Mcree Precision G5 chassis, DBM is integral with the chassis. I gave LRI a dummy 223R and they set up the Ackley chamber to shoot the Berger 90gr VLD Target at a COAL of 2.670". I shoot mostly 80gr and 88gr ELD-M.
Disregard polymer mag in photo.I'm using a 5 round 308 Win. aics magazine that I modified. Bent the feed lips in and put a little epoxy putty on the mag walls to make it slimmer so it single stacks the rounds, max COAL in this set up is 2.88". I used J-B Weld Steel stick epoxy putty and filled in the indented portion of the mag walls only. Use a knife or chisel to shape putty before it completely drys, then sand paper smooth. No need to mod the follower. It took about 30 mins of fooling around to get it right.
I have had zero issues with reliability, feeding, or ejection. The polymer mag is probably just a bit smoother, but doesn't work with the long COAL. If you don't want to mod stuff you could use a 223R Wyatt’s Outdoors DBM, max COAL of 2.850", a drop in replacement for the Remington hinged floor plate.
http://precisionrifleblog.com/2012/12/13/detachable-magazine-dimensions-max-coal/
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I run 2000MR in my 223AI, 23" barrel and push the 80s at a conservative 3060. This spring I'm going to rework the load and see if I can't get 3100+
I agree with keeping the AI , and also trying different powders ,I tried a few varget was okay in accuracy but slow in speed , a real disappointment because Temp stability is a priority for me, I hate temp/speed swings that take you out of the sweet spot.by far my favorite powder has become H4895 for the Heavy Bullets, I have a .100 freebore and sling 80Berger vlds or JLKs at 3080 out of a 23”
And the brass lasts forever , and it shoots Tiny bug-holes .
And the brass lasts forever , and it shoots Tiny bug-holes .
H4895 works well for me too in my .223. 26” barrel gets me 2970 with the 80eld’s.
Hey Stuff
The rifle used in the videos with Frank is mine. I have quite a bit of 223AI (I have 2 for student loaner and training rifles) I haven’t yet read through all of the replies yet...
Think I was reaching top end acceptable pressure out of my 224 around 100 FPS faster than out of my 223AI, but the top end accuracy nodes were only about 70FPS apart. IMHO, if ur tooled up for 223AI already it’s really a personal decision weather the 224 is worth while...
I’m actually really interested in doing a 224AI or other improved variant....why, I totally cant justify it, longer barrel life than at 22BR, more velocity than a 224...all debatable points and arguments.
This all being said, I’m really liking my 224 better than the 223AI. 2000+ rounds now and still going strong. Hope this is helpful, let me know if there’s anything I can help with, good luck!
The rifle used in the videos with Frank is mine. I have quite a bit of 223AI (I have 2 for student loaner and training rifles) I haven’t yet read through all of the replies yet...
Think I was reaching top end acceptable pressure out of my 224 around 100 FPS faster than out of my 223AI, but the top end accuracy nodes were only about 70FPS apart. IMHO, if ur tooled up for 223AI already it’s really a personal decision weather the 224 is worth while...
I’m actually really interested in doing a 224AI or other improved variant....why, I totally cant justify it, longer barrel life than at 22BR, more velocity than a 224...all debatable points and arguments.
This all being said, I’m really liking my 224 better than the 223AI. 2000+ rounds now and still going strong. Hope this is helpful, let me know if there’s anything I can help with, good luck!
@Colorado Precision Rifle have you had a chance to try 95's in your 224? If so, what velocity were you able to reach and what was your OAL if you can recall?
I have not tried the 95’s, I figured for the BC that I was gaining I would loose velocity. That being said I’d still like to try them when I get a chance....I could be wrong on all of the above...haha, wouldn’t be the first time
Brian- is that with the new JP bolt gun prototype from the videos?
Hi, well, it’s the JP prototype chassis, the action is an Origin. But it’s the same rifle in the videos
Have you tried H4895? It’s about 100fps faster than varget for me in a 26” .223. Not exactly apples to apples but I never saw any signs of pressure with H4895 and ran out of case capacity.
May I ask what charge you needed to get to 2880? I run CFE223 in my 26" gasser and can get just over 2800 with 88 ELDs. Required 26-26.2 grains CFE to get to 2800.
I'm curious because I may be able to see how much velocity loss between gas and bolt gun (approximately) with a bit of your data and a Varget test in my rifle. Would love to run Varget if I can get decent velocity and clean extraction without too much pressure too early.
Yeah...it's a bit long. Lol. I threw my 26" bolt gun in for comparison; this is the bolt gun section so at least it's a bit less across that dark line. ?
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