Re: longrange target.
When I was shooting 49.0 gr. of H-1000 my 5 shot group at 1000 yards was 6.5" tall, 3.5" wide. I dropped the charge down to 48.7 and next time out to 1000 I shot a 5 and a 10 shot group. Both were just under 4.5". I took off just a touch over 2" of vertical. This is my Tac rifle, 48.7 runs the 115 DTAC at 3153 FPS out of a 27" Krieger. At 49.0 it was 3225 fps.
I have a 6CM 30" BR rifle that at 800 yards my best ten shot group was 2", it is throated with the long reamer. I have not chronoed this rifle but my come ups figure out to be about 3300 FPS. The load in this rifle is 49.0 H-1000 with a 115 DTAC. This 2" group was when I had 1200 rounds down the barrel, Joe says they are just starting to shoot good at that round count.
The Tac Rifle I started shooting it in Feb. '07, it now has 3800+ rounds on it and I checked it at 600 recently and it shot a .4 moa 5 shot group. Not to shabby for 3800 rounds. I have a 28" Lawton barrel chambered in 6CM waiting to screw on. This one has been broke in and Melonited.