Free: Contests & Raffles.
:)I shot out a 7mm mag barrell in about 4 years. Have seen a number of shot out barrels. Even in the lowly 223 seen shot out barrels. None of them took anywhere near 10,000 rounds. I have seen newly barrelled rifles in certain cartridges showing accuracy degradation in less than 300 rounds.Carl
Unless you shoot 10,000 rounds a year through either barrel, you have nothing to worry about. Look at all the pre 64 model 70s out there. They are about 40 years old now. Unless they have been abused, they still shoot. Look at Enfields, 03A3s, etc.. Go ahead, I think you should try to shoot out a barrel. I hope ya have a lot of money for ammo.
if the throats eroded those riflings are wore out.?Carl
Brings to mind the less sought after deep two land cut O3-A3 and M1 barrels of years past for the more shallow four groove barrels in latter years. I have a four groove 03-A3 that still shoots just about MOA. I'll bet there's 25,000 thousand rounds been down that barrel. In that article, there's slight mention of the shallow cut lands, A.K.A. Marlin Micro Groove. My old Marlin 39 with micro cut barrel never ceases to amaze me with it's accuracy when compared to other .30 carbines of the same era. While many target barrels aren't quite micro groove rifling, they do wear out faster. Most people should never need to worry about this with a hunting rifle. -Steve