7/2/2023 0 Comments .308 subsonic ammoAfter hearing the impact of the bullet, the deer ran less than 50 yards before expiring. The second shot was on an 8 point at 183 yards. The first deer was a doe, which was shot at 100 yards. We were able to harvest two deer with it over the weekend. I thought this would be a good opportunity to use my suppressed. It's the handgun I wished I had for years when I was able to hunt."I had the opportunity to guide a whitetail hunt this past weekend with disabled children. On paper it's a dog compared to other cartridges but for what it does it's really good at it. The gent mentioned how much he likes it without me even asking. I decided years ago that I REALLY(!) liked the cartridge. Of course the adjustments are all happening at the loading bench.įWIW, I was discussing 300BLK with a gent at the LGS just hours ago. Now subs and supers work fine with no adjustment of anything on the gun. So I just wrote all of them off and decided to cast my own heavy bullets and reload for my gun. The 1st ones I tried, S&B 220s, wouldn't function. Mine has pistol gas and even with that not all factory subs will function. Subsonic in a semi takes something special. 223 and started to load 33gr subs that are hellyweird silent with a can. There's just no way to keep port pressure high enough if it has rifle gas. I accepted that I was going to have a single shot AR with that ammo. 223 in an AR (Sierra 80s) I had the same issue you did with. I didn't think you'd get it to work without trying magic. With higher disposable income than when the project started just added another dedicated family member instead. Figured at that point though shooting supers would be to over gassed than I was willing to mess with. Only other known things I could have tried if I was still going for this would be getting a weaker buffer spring and using hand loaded ammo (well of course could get a shorter barrel and pistol length gas system). Don't expect a rifle length gas system on a 308 to cycle subs. Hopefully this helps some people who do a bit more research than I. I retired the project and got a new toy for subs (300 BLK). So in total with gas port drilled to same diameter as gas tube and zero buffer weights and gas block fully open no progress. Nothing I did could get it to cycle (store bought) subs, ended up removing all of the buffer weights even (filled with plastic spacers) and never even got the bolt to budge. I may have missed it, but do we know that the load he was using was actually capable of cycling the gun with a rifle length gas port? What would be best next steps from here, an even bigger gas port? Shorten/weaker buffer spring? Lighter BCG? The BCG does start to come back now a little but not nearly enough and gun got dirty pretty quick (guess that's expected tho with gas block opened up all the way). So finally got out to the range to test this out, drilled the gas port to 0.096 with a #41 drill bit and still no luck. Something between 0.093"~0.096" is the bare minimum, though - so, even if it's what they say it is - it's too small. 308 Win ammunition, even with a suppressor - in a gas gun. In fact, you may need an even larger gas port diameter to properly run subsonic. 308 Win cartridge, with a 0.750"gas block journal needs to be. How many times here on this board have I stated that the proper gas port diameter for an 18" rifle-gas. 0.089" gas port diameter, per specs, but as stated, did you measure that, and come up with that, to verify? At any rate, that doesn't matter, because.
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