338arc made by Valkyrie Rifles

[kenbro]

I imagine .14 Hornet has no official approval in any country...

Nobody's approval is needed. Just have good reason and an absence of links to Isis. What does it matter if it's a concave shouldered 5/35 SMC that tapers to a nonagonal head.

Is it not a convex shoulder?
Ken.

 

[kenbro]

I imagine .14 Hornet has no official approval in any country...

Nobody's approval is needed. Just have good reason and an absence of links to Isis. What does it matter if it's a concave shouldered 5/35 SMC that tapers to a nonagonal head.

When I had a .14-221 Fireball built in 2009 and the Gunsmith sent it for proof, the proof house had seen nothing like it so had no info to help them.
They said it needed a name so the Gunsmith told them my surname and that is what the cartridge is registered as, a.14-221 Bro….
Ken.

 

[AHPP]

Is it not a convex shoulder?
Ken.

Not if you made a new one with a concave shoulder.

My point was the cartridge can be some infinitesimally different whatever. There’s no centralised, authoritative, exhaustive list of case designs deemed sufficiently ubiquitous for one to be allowed. Otherwise what’s to stop some licensing person one day sucking through their teeth at a 222 because it’s not a 223.

 

[BWH]

Was shooting one in the US a couple of weeks ago. Thought it was a great cartridge. ( was using it in pigs) but the rifle wasnt as accurate as I would have liked. I understoof from a friend that there is a difference between the rifle twist rate of teh 8.6 black out and the .338 ARC and that the suggestion was that the .338 ARC needed a tighter twist. Also used a .338 Federal which was also nice cartridge.

 

[AM_Lillycombe]

Was shooting one in the US a couple of weeks ago. Thought it was a great cartridge. ( was using it in pigs) but the rifle wasnt as accurate as I would have liked. I understoof from a friend that there is a difference between the rifle twist rate of teh 8.6 black out and the .338 ARC and that the suggestion was that the .338 ARC needed a tighter twist. Also used a .338 Federal which was also nice cartridge.

Yeah that is why I went for a 1:6.5 instead of 1:8 which we worked out was too slow to stabilise the long heavy projectiles.

Dave at Valkyrie has made me a hell of an actual barrel which is obviously a contributing factor.

The 1:3 of 8.6 BO was predominantly to force the petals of the solid copper projectiles open up on impact, not for accuracy or stabilisation. However Q backed it off to 1:6 to get it saami approved which is as good as admitting 1:3 is too much!

I have a few new 338arc loads to test out including an absolute maximum load for 270gr ELDX before exceeding pressure. Just waiting on the weather.

 

[BWH]

Interested to hear how you get on with the 6.5 twist.

 

[AM_Lillycombe]

Well it works! 73meters out of the landing window while the kids were sleeping. The loudest noise was the impact, which I can only describe as how I imagine slapping tiled wall with a large trout would sound…

The dnt Zulus also was perfect. Clear night vision, press for range, aim the new zero, job done.