First of all, what has been the normal barrel life of factory .270 WSM barrels? I have a win model 70 coyote with the factory heavy stainnless barrel, and I am shooting fairly hot non coated handloads and i want to know about how many rounds to expect out of this barrel. I never shoot it when the barrel is extremely hot. Second, if I were to have a muzzle brake installed(holland quick discharge maybe)on the factory barrel, when that barrel got worn out and I replaced it with a custom barrel, could i have the brake swapped over to the new barrel for considerably less than getting a new brake? Thanks.