Ahh so I see your getting there
glad to hear it as it's disheartening otherwise.
I have just found that when shooting a .270 BSA Majestic Featherweight (rifle weighs 6 1/4lbs) I have that I have to modify my normal grip of my left hand as the lack of weight of the rifle jumps more and it ruins the grouping unless I calm it down with a different and tighter grip with my left hand. Despite shoting fro years it seems that I will have to practice this and possibly make it my normal hold so I will have to re-train myself.