Buddy, when the Barrel gets hot, them big ole 405 grain lead heads just get a MIND OF THIER OWN !!!! :x :x :x takes only about 6-7 shots one after the other, and goodbye, on hitting the dang 8" see-and-say target. (you call shoot and see). them bullets all over the place and mostly over to the left. using a commercial Cast lead bullet, pushing 1500 fps approx. made up some Lee-Mold wheel-wieght bullets with good ol Alox on them last night. maybe they will be better. but I fear thar aint nutting that can be done about a hot,hot barrel. 45-70, for when the jobs gotta be done just right. good for P-dogs to Moose.