Search found 26 matches

by fancygunz
Mon Aug 26, 2019 11:08 pm
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Re: Subsonic Unsuppressed 300blk from 8.3" Barrel

Update: I stripped the rifle and thoroughly cleaned/lubed. I then went up to 11.5gr Shooter's World Blackout and...it cycled! Finally! I must have been on the edge with 11.0gr in a 8.3" barrel. ...however, as some other forum posts on this powder have mentioned, it left unburnt powder residue all ov...
by fancygunz
Fri Aug 23, 2019 2:56 pm
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Re: Subsonic Unsuppressed 300blk from 8.3" Barrel

Lil'gun will make the problem worse, CFE BLK might be able to mask whatever the actual problem is enough to work. Pull the gas block, make sure there is no leak or blockage. A leak will show up as a carbon track. Make sure the port is centered in a carbon ring and measure it while it's apart. That ...
by fancygunz
Fri Aug 23, 2019 10:38 am
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Re: Subsonic Unsuppressed 300blk from 8.3" Barrel

Just so I’m not confused, You have full function with supers, cycles and load locks back on empty every time. Subs will eject the spent case, but not pick up the next round. Yes, exactly my problem, even at "max loads" to remain subsonic with a powder that seems highly recommended. I was thinking o...
by fancygunz
Fri Aug 23, 2019 7:24 am
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Re: Subsonic Unsuppressed 300blk from 8.3" Barrel

when you say "cycle properly" we need more info. By not cycling properly, I mean it turns my semiauto into a bolt action. It does not feed the next round at all. A lot of things are counter intuitive with subs. Does it cycle at all with those loads? ... If if does not lock back on empty with the ab...
by fancygunz
Thu Aug 22, 2019 9:37 pm
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Re: Subsonic Unsuppressed 300blk from 8.3" Barrel

I had simular set up 8.5" and found that changing out a std,carbine buffer for a H 2 buffer gave me complete function with all loads super and sub. Isn't that counterintuitive? I always thought a heavier buffer meant more resistance to recoil and therefore should require more energy to lock back, no?
by fancygunz
Thu Aug 22, 2019 11:33 am
Forum: Handloading
Topic: Subsonic Unsuppressed 300blk from 8.3" Barrel
Replies: 34
Views: 10300

Subsonic Unsuppressed 300blk from 8.3" Barrel

Hello all, this is my first post but I have been lurking for a long time. I have read probably 90% of all threads related to reloading subsonic 300blk, and none of the suggestions have been working for me. I have an 8.3" unsuppressed barrel (muzzle brake) with a pistol-length gas system and a 0.0995...