Well, yeah. Sometimes it's just one barrel doesn't like them, but in your case, all the (good) barrels don't like them. No sense in trying other powders in the hope of finding a magic combo.
Hornady are probably the most consistent fmj performers.
I currently use the Phase 5 on my 308 AR Service rfle. It is allowed.
https://thecmp.org/wp-content/uploads/2024/01/2024-Highpower-Rifle-Rules.pdf
Rule 4.1 on the AR Service rifle allows it, pg 40:
An extended bolt release is permitted on both right and left-handed receivers, provided there...
“canister powder “ generally refers to the powder manufactured exclusively for the ammunition company for a specific purpose/cartridge.
The extruded powder does have a better temperature stability than ball powder, so a max load developed in spring could still be safe in the heat of summer.
It might just be a little rough that will eventually smooth out, or it might just need a little polishing/honing by the mfr. Yeah. I know some people who just wrapped steel wool or green scotchbrite around a 45 ACP brush with some oil and "buffed it out, but I would contact the vendor. No sense...
Uh, yes, he knew it needed to be turned down behind the threads....The question the smith was asking (in addition to what diameter/length to turn down) was the transition: squared 90 degree? Angled (what degree)? Chamferred? Hence asking who might know how to do it right.
I'll start with the...
So who is able to do it correctly? My local trustworthy smiths can do it, but don't have the correct specs and would need a diagram/specs. Any suggestions for smiths or correct diagrams?
Yeah, it sounds like you made an effort and tried to beat factory. No way will LAX or Freedom be better. Stick with Hornady Match since you have good luck with it.
Edit: Whatever happened with the Prime/RUAG debacle?
Case thinning from too many reloads. No mystery, look how thin the brass is at the crack. The primer just flew out as the case extracted and some residual pressure popped it out.
https://www.snipershide.com/shooting/attachments/img_0697-jpeg.8389227/
If it were a very fine FFP crosshair or dot at 25X, it would be invisible or difficult to see against the black target face at 18X and below when we dial back due to the mirage moving heavily or boils....Cuz we're old and can't see.