Help with the right chamber

[LRRPF52]

I was just shooting my 31.2gr CFE/123gr AMAX load from 200-1000yds this weekend at my DM Course.

It's boringly accurate and effective from a 17.6" Lilja 1/8 barrel for me, but I was at 6600 ft elevation at 50-58 F. Wind was changing a lot, but I was still hitting a small silhouette at 1000yds like it was cool. First hit on it was a center forehead shot.

I shot a group on the large 1000yd gong so small, I can't even believe it when reviewing the photos. I rapid-fired 6 or 7 rounds at the gong, without being able to see my impacts, just heard them. I popped off the first, heard a register, then another...same thing, let 4 or 5 more fly as fast as I could get a solid reticle into my wind hold and break the trigger..."Ding ding ding ding ding"

I figured it wasn't much to be impressed with because the gong is the size of a barnyard door. When we policed up, I made the range cold and drove down to the targets...

The 12 o'clock group is from a buddy's SR25 shooting 178gr AMAX. Mine is 2 o'clock.





I then moved to a small white silhouette. 1st round went just off the shoulder, next one connected dead center of the forehead. I took off .2 Mils and let another 6 or so fly.