I need some help with trying to figure out what may be going on with my 2018 AI AX and factory Prime Ammo 6mm Creedmoor. Any advice or guidance would be appreciated:
Background:
Background:
- 2018 AX with a 24" Proof stainless steel 6mm Creedmoor barrel (24")
- Factory Prime Ammunition 107 grain 6mm Creedmoor rounds
- Over the past couple of range trips with this ammo (all from the same lot), I've experience several deep primers strikes that are almost to the point of piercing, along with some more normal looking primer strikes with what looks like minor cratering but no real evidence of ejector swipe
- During today's range trip, I had 3 rounds out of 20 fired that had deep primer strikes and two that actually punctured the primer cup (I could see light through the primer when I held the round up towards the light). I stopped at that point to avoid doing any damage to my bolt face or firing pin
- I've previously fired both factory Hornady and Federal Gold Medal Match 6mm Creedmoor rounds through this barrel and have never noticed any of the above issues (although I wasn't looking that closely at each spend round like I have been with the Prime Ammo after I noticed the first deep hit while I was cleaning up my brass
- I've also fired factory .308 Win , .260 Remington, and 6.5 Creedmoor with this rifle, using factory AI barrels, and have never noticed any obvious pressure signs at all using a variety of ammo brands and weights (175s, 168s, 140s, 120s)
- I'll try to post some pictures of the primers as soon as I can
- Does Prime Ammunition tend to load their rounds towards the "hot" end of the scale and it just may be too much for my particular barrel chamber?
- Is it possible that the pressure level of these rounds is okay and I just need to have my firing pin bushed (not sure if that's a thing with AI rifles). I would think that I would see deep primer strikes and/or cratering on the other calibers that I'm shooting through this particular rifle if this was truly the cast; however, I'm not knowledgeable to know if that is truly the case