I'm seriously considering a new barrel for my 110 LRH (Long Range Hunter) chambered in .308. I've become convinced my POI changes down over the first 6 shots or so. especially the 1st shot. so far my gun has a repeated cold bore flyer for the very first shot (approximately 1" higher at 100 yards). this is a cold, dirty bore. not talking about a cleaned, cold bore. after repeated range days to study this I have also noticed that as my barrel warms up around shot number 5 or so, my POI is roughly 2 inches lower than 1st shot. pictures 1-3 below are the same range day shooting Barnes 150 gr TTSX. picture 4 is a previous range day from colder weather shooting Barnes 130 gr. TTSX. gun has approximately 180-200 rounds down the barrel since new.

at least its consistent and this gun will be used for hunting. so far I have zeroed for shots 2-4 and I can adjust for 1st shot. but I really love the gun and Leopold VX-3i 3.5-10x40 combo. so I'm considering getting an aftermarket barrel. any thoughts, comments or suggestions?

all shots are from a bag rest (dual bags) at 100 yards.

Note: on pictures 1-3 below I was changing L-R 1 click to R for 2nd photo and then back 1 click to L for 3rd photo so there is a little movement L-R for that.