Alasqr, sounds like your gun and mine handle 370 maxi's in very similar fashion. At 70 grains RS, I am happy with 50 yd. performance and have killed a dozen or so deer with that combo. Unfortunately, the drop at 100 yds. is excessive, and when I bump the powder charge, I wind up with fliers, not to mention bruises (metal butt plate). One thing I haven't tried which I need to, are wads or corn meal between the conical and powder. I sense the reason these loads become inaccurate is due to blow-by ceating turbualnce ahead of the projectile. I don't know how to prove that other than trap more gas and see what happens. Let us know what you find.