Home Forums Reloading Varmint Rifles 223 Remington expected barrel life

Guys of infinite wisdom:

I shoot a M700 in 223 using 50 grain bullets at 3200-3400 fps; Mild loads and I do not overheat the barrel on dogtowns. A usual dog trip is about 500 rounds per day. Knowing this, what is a ballpark estimate of # of rounds before a rebarrel? I know I will go by accuracy determination, but in your experience what have you seen?

thanks