X-Caveman
Gold $$ Contributor
I got my new scope on it an headed out on Saturday. What a difference good glass makes! First, I got it printing 2" high at 100 yards, which is about a 225 yard zero with the 125 SST @ 2,860. Then, at 409 yards I just held the 2nd hash mark in the JM-1 reticle (which is supposed to be 400 yards with a 200yd zero with 5.56) and sent 4. There was about 5MPH wind from 10 O'clock and the trap is on the other side of a draw. The bullet is at least 50ft off the ground as it crosses. I was happy to hear the clang, and more importantly, see the hits!
Should be a winner for what I'm doing. Everything out to 250yds is point blank - any magnification, just point and shoot. At 1x, the scope is like a red dot (a VERY bright one). That should cover 95% of why I built this thing. If a further shot opportunity arises, dial it up to 6 and hold. I'm confident out to 400 with it.
I did do some rough tuning after shooting this plate. BIBs shot a little better than the SSTs (no surprise there). The vertical impact centers were the same between the two bullets, which is great. I shot 6 three shot groups at 400 with increasing powder charges. 3 with BIB 118-10s and 3 with the 125 SSTs. BIBs averaged .59 MOA to the SST's .74 MOA. Smallest was a 1.37" with 34.6gr under the BIB. A lot of that is shooter/ optic limitation, though. I was using a IBS 600yard target, trying to hold so the blue was completely obscured by the reticle - far from ideal.
Once I get the permanent can on it, I'll probably revisit some tuning. To do it right, I'll need to mount a high power scope and get a stable shooting platform. That sounds like too much work only to see it change when the suppressor is swapped. For now, I've settled on 34.2gr of 4198 and the 125SST. Need to get out try it on some feral hogs. They are all over our place.
Should be a winner for what I'm doing. Everything out to 250yds is point blank - any magnification, just point and shoot. At 1x, the scope is like a red dot (a VERY bright one). That should cover 95% of why I built this thing. If a further shot opportunity arises, dial it up to 6 and hold. I'm confident out to 400 with it.
I did do some rough tuning after shooting this plate. BIBs shot a little better than the SSTs (no surprise there). The vertical impact centers were the same between the two bullets, which is great. I shot 6 three shot groups at 400 with increasing powder charges. 3 with BIB 118-10s and 3 with the 125 SSTs. BIBs averaged .59 MOA to the SST's .74 MOA. Smallest was a 1.37" with 34.6gr under the BIB. A lot of that is shooter/ optic limitation, though. I was using a IBS 600yard target, trying to hold so the blue was completely obscured by the reticle - far from ideal.
Once I get the permanent can on it, I'll probably revisit some tuning. To do it right, I'll need to mount a high power scope and get a stable shooting platform. That sounds like too much work only to see it change when the suppressor is swapped. For now, I've settled on 34.2gr of 4198 and the 125SST. Need to get out try it on some feral hogs. They are all over our place.
Go to JBM and use this one: < 
RG
Do you have a 6.5 Grendel AR yet? I've heard the 123SST is pretty good medicine for pig-shaped rodents!
