I'm loading for my Cenurion Arms SPR barrel, using 24gr TAC with a 77gr CC. Seeing as this barrel is cut for MK262, and I came across some 77gr Noslers, I though I'd give them a try. For those of you loading this or something similar, what are your results? What kind of accuracy are you getting? I know theses aren't target loads, but some of you get decent results.
- Thread starter 2ac
- Start date
24.5gr of TAC with a 77smk is my go-to heavy bullet load and has been extremely accurate out of all the rifles I've tried it in.
I've been loading 77gr SMK's over 24.1 gr TAC @ mag length with sub-MOA quality (1/2-3/4 MOA) out to 300 yds. I'm shooting these out of an 18" White Oak SPR bbl, I think I last chrono'd at ~2750fps; no pressure signs but never went up with powder because the accuracy proved itself.
Both of my rifles like 23.5, around 2740 fps but it could be the lot. Both will shoot under 2" at 200yds from the bench, sometimes I can do that with a sling.
24.6 with an 80 Amax gives me 3.5" at 600 yds in my 26" barreled spacegun, 2840fps.
Tac can be temp sensitive so I like that it has good velocity and accuracy well below the upper pressure areas.
24.6 with an 80 Amax gives me 3.5" at 600 yds in my 26" barreled spacegun, 2840fps.
Tac can be temp sensitive so I like that it has good velocity and accuracy well below the upper pressure areas.
24.5 gr of TAC in win brass with the 77SMK is my practice load for 600 yds and under.
Looks like I'm going to have to work on my OCW a bit more and bump up my charge a bit. The rifle shoots great with 69grers, I'm just hoping for a bit better results with the 77s. I will also look for some SMK's as all I've tried are Nosler's.
24.3 gr of TAC in LC brass gets me 2700 fps with cc 77's. 1/2-3/4 MOA.
I am working on that very load. I have had the best accuracy with 24.0 tac, cc 77.0, Fed SM GMM primmers, mixed once fired, running 2696 avg velocity. best group was less then .5 moa. I am running a noveske switchblock spr barrel. This was back in 40 degree weather, I need to see what happens at 85 + before I commit to this load.
I bumped a test group up to 24.4 and picked up 25 fps they didnt shoot as well
Lack of supplies have halted efforts for the moment
I bumped a test group up to 24.4 and picked up 25 fps they didnt shoot as well
Lack of supplies have halted efforts for the moment
Last edited:
