The only reasonable explanation is that the new chamber is slightly larger (longer) than to old chamber, causing the pressure to build slower when the round is fired. Try something before you give away this lot. Take cases that have been fired through this rifle and reload them with the exact...
That may be true in its natural state. However, as I understand it, the Uranium in Iran was enriched to about 60%. That would it just slightly less than the Uranium used in the first bomb dropped in WWII. That was extremely radioactive.
I will put this out there for everyone who is going to hunt AZ unit 8. There is no water in the bottom of Sycamore Canyon now. That is not to say there will not be water in November, or October or September for that matter. Arizona is prisoner to the current weather like not place I've ever...
First thought is 6.5-06. I have one and it is a kick to shoot with light bullets and will take anything with antlers with heavier bullets. OR.. one of the new ACR cartridges would be OK also. 6mm ARC or ??
I bought a lot of 500 pcs. some 15 years ago. Still have some 400 odd that I have not fire formed and cut down. I also have a bunch of 375 Holland and Holland that work well.
Sako TRG 42, 338 Lapua Mag. complete with muzzle brake and bipod, with 100 rounds of reloadable brass and 100 300 grain bullets. $3550.00 plus shipping to US destination. Available with scope and mounts as shown.. US Optics 3.5X17X56 with Sunshade for $5200.00. Must go through an FFL...