HSM Ammo blows primer
Bought 2 boxes of 168 berger's at Cabela's last week, mostly because I can't find brass any cheaper.
Pulled 5 bullets and weighed the powder. Powder was a fine ball, and measured an inconsistent 86-89 grains, which seemed really high. Primer appeared to be Fed 215, but of course I'm not sure.
I reloaded those 5 with my go to 74.0 gr of 7828, and reseated the bullets. Shot 5 of these, and all shot well under MOA at 200 yards around ~3145.
I shot 5 of my Win brass with all other components the same, also well under MOA ~3125, same point of impact, which I would expect.
Decided to shoot up to 5 of the factory loads to compare. First shot, seems off when I pull the trigger, including real heavy recoil. Open the bolt ok, but NO primer in pocket, and amazing ejector mark on head. Look at my bolt face and there is actually a mirror image of the headstamp, in a shiny brass finish on it. Otherwise the gun seems fine.
I think it is a simple case of too much powder, though I can't know for sure. I'm taking my bolt to my smith, to check it out.
Anyone else using this ammo? If so if you find some on the shelves now, be careful, I just bought these boxes at Cabela's a week ago.