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#12617 - 04/29/18 07:44 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Offline
veteran

Registered: 07/09/11
Posts: 1411
Loc: S.W. Michigan
Hard to say, I don't have an AI.

Got some new starline brass in. Took 24.4 out for a spin and came up with this with 5 at 100.


It shot nearly the same at 600... 3 into 1.5" this time with two droping low to make 1 moa total. I'll try it again with once fired now and also 1/10 more and less grain of powder.

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#12618 - 05/10/18 01:19 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Offline
veteran

Registered: 07/09/11
Posts: 1411
Loc: S.W. Michigan
Velocity testing 95gr SMK loaded to an overall length of 2.290 with RL-17 in new starline brass and CCI #41 primers. two shots each charge weight over a magnetospeed from my 22" Bartlein barrel 6.5twist with rifle +2" gas system smithed by Craddock Precision.

25.4gr= 2557, 2554

25.7gr= 2583, 2589

26.0gr= 2605, 2608

26.3gr= 2670, 2693

I stopped right there as that is a huge jump in velocity. 26 and 26.3 had ever so slight ejector polishing on the case head. One thing to note I was running my gen 1 JP SCS buffer system with the lightest spring weight so switching to the gen2 H2 SCS and or a heavier spring may delay the opening enough to get rid of the slight ejector marks.

Next up will be group testing and I think I'll start around 25.0 and go up to 26.0

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#12619 - 05/13/18 08:11 AM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Offline
veteran

Registered: 07/09/11
Posts: 1411
Loc: S.W. Michigan
RL-17 & 95 gr SMK @2.290... going to give 25.6,25.7 and 25.8 another try to confirm.


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