new_scopeshooter
New member
I just bought a Rem 700 in .308 with a 26 inch heavy barrel. I was wondering
what your barrel break in procedure consist of? Thanks!
what your barrel break in procedure consist of? Thanks!
bigautomatic said:You'll find that most say that break in is not necessary for accuracy. But, I find barrel break-in to really help in cleaning. I definately believe that it does not hurt the bore.
Gale McMillan said:As a barrel maker I have looked in thousands of new and used barrels with a bore scope and I will tell you that if every one followed the prescribed [one shot, one clean] break-in method, a very large number would do more harm than good. The reason you hear of the gain in accuracy is because if you chamber a barrel with a reamer that has a dull throater instead of cutting clean sharp rifling it smears a burr up on the down wind side of the rifling. It takes from one to two hundred rounds to burn this burr out and the rifle to settle down and shoot its best. Any one who chambers rifle barrels has tolerances on how dull to let the reamer get and factories let them go longer than any competent smith would.
Does it shoot groups that size all the time, or was this the only time it shot that well and all the other groups are larger?With 168gr SMK handloads it has 5 shots touching at 150 meters at 8 milimiters apart. That is almost 1/4 inch apart at around 165 yards out.