Author: britrifles
Subject: 303 British Brass Options?
Posted: December 15 2023 at 2:22pm
Subject: 303 British Brass Options?
Posted: December 15 2023 at 2:22pm
 Goosic wrote:A combination of both increased muzzle velocities from near max charge weights to trigger the electronic targets that are set up at those long distances you choose to shoot at and barrels that are not built to last could be the reason for your shortened barrel life Geoff. My assumption is that if you were using N540 with your AR loads, you burned the barrel out by having near to max charge weights used. Again, just an assumption Geoff... |
Not the case. I don’t shoot the AR at long ranges.
As my post above said, I burned out two barrels on my AR shooting AA2520, which is a double based powder. It’s a simple fact that Nitroglycerin burns very hot. It was a mild load at modest velocity.
My long range .308 load is Varget, a single based powder that is far more temp stable than any double based powders. N540 is not very temp stable, long range shooters had to run a winter load a a summer load. This has been experimented on and well proven.
I won’t be putting any double based powders thru my LE’s, I need the barrels to last.
My long range .308 Varget loads are exactly mid range in the load tables, not “near max charge weights”. I make it a point to stay away from max loads.
But, don’t take my word for it, you can find out the hard way too..as many others beside me have.
If you only shoot a few rounds a year, you won’t have to worry about it.