Originally Posted by jmason
Is this the correct go-gauge? It's from Brownell's:
I did try new Nosler brass and had some that chambered and some that fought back. I also had the same results with FL sized brass. All of with had the same length to the datum.
If some are squeaking in then I'd guess you are close to the minimum side of the HS for the cartridge. Not a bad thing necessarily, but I think you'll want to hear this part.
About four/five years ago I was building a 6mm-284 for a guy. I get the rifle done and it just will not shoot. Groups just absolutely sucked balls.
So, naturally I'm pissed, I'm boring a hole through my skull with my finger with all the head scratching, and I'm spending long hours at the reloading bench/test tunnel trying to figure this thing out because I KNOW I built it right. It was a Nesika K action, Kreiger barrel, and a bad ass looking laminate heavy bench stock. No reason for this rifle to be acting stupid like this.
Well, turns out the HS was tight on the gun. I switched to new brass and it had chambering issues, just like your gun does right now.
I pulled it apart and squeaked in the last little bit and suddenly it was a whole new rifle. It hammered groups that'd scare you to death, just like it was supposed to.
I couldn't tell you to this day why it made such a difference, nor do I care. It worked and I've not made the same mistake again since. Better to be lucky than good right?
LongRifles, Inc. (coming soon)