Had a chance to slip out and shoot the 21" Green Mountain LRH barrel again today, but the range & bench were still snow covered so I opted for a few offhand shots. Used 75 gr fffg Goex and the 250 gr Lee REALs and was able to hit a pop can sized target every shot at 25 yards. Not a very precise method of testing a barrel & load, but it was fun! Tried 1 shot at 100 yards and it hit about 6" left & 4" low which was close enough the be encouraging. When I get a chance to actually use the bench I'll adjust the sights, but for now it's close enough to plink with. The fffg black powder gave a lot better ignition so I'll probably stick with it. Only fired 5 or 6 shots today, and it cleaned very easily.
I really like this barrel so far!!!!!!!!!