Chavez,
are you referring to grooves like these on my Beretta action?

Bob H used this action to make his .45-70 DR which I purchased from his estate. This was Bob's deer rifle for about 10 years and has nary a scratch on it. His regulation load was a jacketed 300 grain bullet at 1500+ feet per second and that is deadly on deer and hogs and very comfortable to shoot, even from a bench rest. The load manual rated the pressure at less than 16,000 psi.

This hog was around 300 pounds and it took only one shot.