Ok not sure whats going on but a rifle that I have and unknown round count is shooting inconsistent? If I shoot a very slow group not letting barrel heat up it holds tight groups, but if I shoot three fast shots group goes from 2.75" at 500 to 7" now when barrel is good and warm it will settle back to 2.75" group but different POI of cold bore shot, about 7-8" high and left. It will do this consistently. Its a Rem 700 SPS varmint 26" heavy barrel. Well end of stock has pressure tabs sitting against barrel, so I free floated barrel and no change? Could I need a rebarrel job? I have always shot pretty hot loads in this rifle, so didn't know if throat could be worn?