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#12607 - 03/13/18 06:26 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan

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#12608 - 03/14/18 09:35 PM Re: .224 Valkyrie [Re: Niles Coyote]
Cinch Offline
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Registered: 07/09/11
Posts: 1277
Loc: Wyoming
From what you've posted so far I'm impressed with this new cartridge...

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#12609 - 03/20/18 05:08 AM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan
I had a chat with Glen Seekins over on a FaceBook Valkyrie group about issues he had been having getting 90 gr FGMM to group. His finding was the base to ogive depth on his lot of ammo was around .020"

I checked one of my lots and found it to vary by .022"! Its no wonder groups have been inconsistent. Glen seated his all to one length and the problem disappeared. I went through 40 and adjusted those down, rounding them to the next lower .005" so now I have 2 sets of ten and 1 set of twenty seated .005" apart from each other.

I'll report back once I get a chance to shoot these for groups

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#12610 - 03/24/18 04:52 AM Re: .224 Valkyrie [Re: Niles Coyote]
Cinch Offline
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Registered: 07/09/11
Posts: 1277
Loc: Wyoming
Wow that's great to know! I can definitely see that being a problem...

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#12611 - 03/26/18 03:49 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
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Loc: S.W. Michigan
Seating depth testing with 80 amax and 25gr RL15, 2.250 shot well as did 2.290

I ran a load test also with 75 amax and again 25gr RL15 was the clear winner. I tested 24.8-25.6 in .2gr steps. The gas pressure is less with this bullet so I bet I could push higher and may be able to find a node around 25.8-26gr.

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#12612 - 03/29/18 02:56 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan
Checked velocity today, my good shooting 25gr RL-15 under 75 ELD (just got some in since I'm about out of A-max) is turning in 2771fps, I also shot 3 at 25.8 which is where the next node may be and it was running 2910fps. While I didnt see pressure signs, a 140fps jump over .8 of a grain has me second guessing going above 25gr.


Next I tried out H4350, one shot only, checking velocity and pressure with the 80 grain Eld...

25gr=2427

26gr=2540

27gr=2653

No apparent pressure signs on any of the case heads. This is a 18" rock creek barrel. I doubt I'd be able to get much more than a grain above 27 inside the case and seat the bullet without significant crunch. At 27 grains this is about 20 fps slower than 25gr of Varget in this barrel.


Then I attempted RL-16 but it had to much bulk and 26 grains filled the case to the neck should junction.

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#12613 - 04/02/18 04:25 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan
.72 CTC 2672fps over 5 shots.

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#12614 - 04/06/18 08:25 PM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan
Shipping notice arrived, 22" Bartlien 1:6.5 twist with rifle +2" gas system incoming.

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#12615 - 04/07/18 10:40 AM Re: .224 Valkyrie [Re: Niles Coyote]
Niles Coyote Online   content
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Registered: 07/09/11
Posts: 1408
Loc: S.W. Michigan
A Facebook user asked if the same loads and rifle specs were used in a 223 vs a Valkyrie which would be faster...

I thought this might be a fun excerise while allowing me to get some data on bullets I have not used yet in the Val.

My results...
First let me define the uppers. Both wear 18" 1:7 twist, cut rifled, stainless match barrels made by Rock Creek. Both have approximately the same round count as well, +/- a hundred. Three shot averages using Varget and CCI #41 primers.

223 LC 02 brass=
69 Nosler CC BTHP w/ 25.3gr 2820fps
77 Sierra Match King BTHP w/ 24gr 2686fps.

Moving on to the Valkyrie with the same powder charges.

Valkyrie with FC brass
69gr 2790fps
77gr 2648fps

So as you can see there is 30 & 38fps difference between them with the 223 at the very top of published load data vs the valkyrie load data which can be increased a bit before reaching max published load data.

I should add both barrels were cleaned the same way as well as the ammo loaded the same moments before I did this.

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#12616 - 04/07/18 02:42 PM Re: .224 Valkyrie [Re: Niles Coyote]
Cinch Offline
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Registered: 07/09/11
Posts: 1277
Loc: Wyoming
Probably closer to 223AI?

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