So I had a 22-6mm Remington built on an old M77 (tang safety) action with a Krieger barrel (8 twist). All the work was done by a smith who I had yet to have any reason not to trust the work. After the work was done, I shot the 80 grain ELD Match (48.0 grains of H1000, all same lot, set at .010" off the lands), using Hdy 6mm rem brass, for a little while. It was working great too. When I neck the brass down, the shoulders aren't touched and I use headspace gauges to set my dies. Anyways, on the 3rd firing of the brass, one of the pieces split about 1" from the base all the way around. It was a very precise, laser like cut. After, the gun is failing to hold 3" at 50 yards and bulges the cases about .016" about .25" from the base. I have a lot of ideas as to what had happened but maybe someone here can help narrow it down for me. All charges are weighed on a balance beam scale, calibrated before and after loading.
If there is any other information someone needs, please let me know. I keep very good records.
If there is any other information someone needs, please let me know. I keep very good records.