Have been frustrated with this gun. Let me explain . . . I recently acquired this gun from my father who has used it since 1978 for mostly deer and hogs. He never loaded his own ammo but found 130 grain Winchester Silver Tips (not made anymore) to shoot very good in it. So I thought I'd load up some 130 Sierra boat tails for it. They were all over the place with every powder charge I tried! Tried H4831SC and then IMR 4350 - with no luck. Bought some 140 grain Hornady boat tails and some Speer 130 flat base bullets. To shorten this up, the flat base bullets shot really good. The boat tails won't shoot in it! Anybody ever had this sort of experience? A rifle that prefers flat base bullets to boat tails? What is going on physically in this guns barrel to create this phenomenon?