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Sub Load developement

1296 Views 7 Replies 5 Participants Last post by  joshuades
I finally got to shoot my subs yesterday. The 135gr smk were sooper quiet with no ballistic crack. It sounded quieter than a nail gun through my aac 7.62sd. I expected this to work as a few guys on here already tried this, but the exciting thing is......

I shot the 150gr gameking successfully. I just wanted to try it. Man they do some damage even at the slower speed.
150gr SGK
10.8gr RL7
COL 2.29(this is the smallest you can go. This puts the ogive right at the case mouth.)
Stag 1:10 SPCII(carbine gas)
They stabilized at 50yd and really did a number on the wood and tree my target was attached to. I shot two of every charge without the suppressor to verify they would work and then put it on. I was very pleased with not only the sound(quieter than a nail gun), but the way they performed on the wood. I am going to try some more at 100yd now that I know they won't damage my can. I have a funny feeling that there won't be pretty nice little holes at 100. I felt like they were barely stable and wanted to tumble as soon as external forces were applied. They might work well for close soft tissue targets. This load ejected with the can attached, but the bolt wouldn't come back far enough to grab the next round. Any ideas to make it feed? I would like to make it feed as the action noise was the loudest thing I heard from the weapon. Accuracy was good, 4 shot groups touching at 50yd. Definitely not hearing safe with my normal loads as expected. I'll post results(with chrono data, which I didn't have this time) as soon as I shoot at 100yd which will really tell if this is worth persuing or not.
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that is exactly what I use. then, I tune my gas to whatever the purpose. I can make the brass eject perfectly for the hottest loads, or turn it off altogether for the greatest stealth.
I think I'll go the adjustable gb way. It makes the most sense. My brass was landing right at the 3 O'clock position smoothly ejecting, but never grabbed a subsequent round once out of 20rnds from 10.8gr up to 11.4gr(which was completely super sonic). I don't want change how she runs right now as my quiet shooting is only a hobby, and normal shooting is bread and butter for pigs and deer. So I should not have to mess with the buffer or spring at all if I open up the gas port a little and install an adjustable gb then tune right?
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