Finally got the thumper back on the range after getting the chamber fixed( leade reamed). First, took a few to sight back in after removing and reattaching scope, was only 3 inches off to the right and then went to it. First was a five round group of factory 250 gr ftx.
Shots were fired at 65 yards(target was setup for 300 blk subsonic testing and was too lazy to move). Average velocity was 2233 fps, down from about 2340 fps last time(not sure if it is because of what was done to the chamber, or the fact that it was 30 degrees colder than last time I shot it). Accuracy was phenomenal.
Next group was five rounds of 250 gr ftx hand loads, 38 gr Lil gun, taper crimp to .476, wsr primer. Standard reload to replicate factory loads.
Average velocity 2214 fps. Still very good accuracy.
Next was a five shot group of 260 gr nosler partition HG(?) Muzzleloader bullets, .451 dia. over 38 gr of Lil gun, taper crimp to .476, wsr primer.
Average velocity of 2229, marginal accuracy, and poi shift high a little.
Last group was a test group of Barnes 200 gr xpb over 41 gr Lil gun, taper crimp to .476, remmy 71/2 primers.
Average velocity 2561, lo of 2542, hi of 2577. Acuraccy pretty darn good. Poi shift 3 in high and 3/4 right. No signs of pressure at all. No primer deformation, no extractor/ejector swiping, and absolutely no sooting. None. Brass is as clean coming out as it was going in. I think I'm gonna explore this combination a little more, I really liked the way it shot, and with the carrier weight and Gunny's stock, very mild recoil.
All in all, I am very happy with the end result. More to come next trip home.
