kenbro
Well-Known Member
Is it not a convex shoulder?
Ken.
338arc made by Valkyrie Rifles
- Thread starter AM_Lillycombe
- Start date
Ken.
kenbro
Well-Known Member
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.
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.
Last edited:
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
Well-Known Member
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.
AM_Lillycombe
Well-Known Member
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.
The dnt Zulus also was perfect. Clear night vision, press for range, aim the new zero, job done.
AM_Lillycombe
Well-Known Member
My New record for the 338 arc.
A rabbit at 293m. That is 275cm of bullet drop…
The Zulus ballistic calculator worked perfectly the gun shot true and by some miracle I held steady.
A cool thing to note is that at that distance the 280gr subsonic round would only have decelerated 77fps according to my BC app.
It’s an expensive round for a rabbit but a great confidence builder.
A rabbit at 293m. That is 275cm of bullet drop…
The Zulus ballistic calculator worked perfectly the gun shot true and by some miracle I held steady.
A cool thing to note is that at that distance the 280gr subsonic round would only have decelerated 77fps according to my BC app.
It’s an expensive round for a rabbit but a great confidence builder.
Always wanted a Johnny Seven Gun!
Hope the Op enjoys his newtoy peice if kit.
K
Hope the Op enjoys his new
K
AM_Lillycombe
Well-Known Member
Haha it does have a bit of Johnny Seven gun about it (had to look that up as I’m a bit young for that reference!).
I can’t say that I’m a huge fan of AR 15s in general but especially in America there are tens of thousands of them produced. God knows how many coyotes have been taken using the AR15 platform!
All my guns are toys!
The main thing is that you derive enjoyment from it. All else is of zero consequence.
K
K
MidlandsPaperPuncher
Well-Known Member
Outstanding!
I'm definitely having thoughts about this or a 6ARC in the new PSA six8 receiver set when it's released.
I'm definitely having thoughts about this or a 6ARC in the new PSA six8 receiver set when it's released.