I had read about some guys using VV N105 & N110 for 300BO. Lil gun does pretty well, for my pistol length shooting subs, but no so well for my 16 inch carbine. I only tried it a little and gave up on it, saving my H110 for super loads. H110 is better suited for supersonic loads, but as you noticed you were able to get it to work for subs. Made me think about loading for open where gas is king. Subsonic 300 blk below 200gr is going to pretty much require 1680. I had read others info describing CFE BLK being gassy and why it cycles the AR even at very low velocities. I settled on the following components for my subsonic 300 Blackout loads for. Also make sure that your upper is broken in and well lubed, the drag on new parts can prevent an AR from cycling with light loads causing you to think something is wrong. 300 AAC Blackout - Manufacturer Loading Data Pistol Rifle Cowboy Bullet. Especially using heavy bullets in such a small case. The CFE BLK loads seemed a little dirtier than lil gun and a little louder, but I assume the sound could have been more bolt velocity vs noise out the silco omega suppressor. 300BLK is a cartridge that can run out of space while trying to use the same data with these two powders. So I went to cabelas and actually found a pound of CFE BLK and tried a fewĪll these loads cycled and locked the bolt open. I tried bumping up the lil gun loadīoth the 8.2 and 8.4 gr loads went super in the ranch rifle With this load/barrel I had some short stroking and the gun did not lock open on empty. Stayed sub sonic and cycled suppressed and locked open plus stayed sub sonic in a ruger ranch rifle with 16" barrel. I switched to a 8" CMMG barrel because it was lighter and move the suppressor closer to the hand gaurd - looked cooler. Originally offered in our 300 AAC Blackout A2116-33 ammo, it has given proper feeding. I had been using 8.0gr lil gun under 220 ELD out of a 8.5 psa barrel. So if the load works for you I’d stick with it, one of the things about hand loading is you can try different things and find they will work for your gun.I don't think any of this is best but here is some trials I just did However you also find the faster burning powders don’t typically produce enough gas to reliably cycle an AR. The reason you were quieter with the H110/Win 296 is because it is a faster burning powder, and it likely had much less energy left at the muzzle, then the much slower burning 1680. If it’s a bolt gun, then he might use a powder that gets the velocity, without needing to worry about fueling a gas system.Ī commercial ammo maker has to make a subsonic round that will absolutely cycle the rifle so they will load as hot as they can, but still keep the bullet velocity below 1100fps. 300 AAC Blackout - Manufacturer Loading Data Shellholder: Hornady 16 Lee 4 Lyman 26 RCBS 10 Pistol Rifle Cowboy Starting Max Source 100 gr HPCE / OTCE (Lapua) 0.308' Powder: N105 (VihtaVuori) Primer: Small Rifle Case: Lapua Trim Length: 1.362' C.O.L.: 1.831' Powder: 10.3 gr 13.0 gr Vel. Most accurate and functional: 10.0gr AA1680, WSPM 2.180 OAL - 1,025 fps Most quiet but not functional (w/o lighter springing): 7.5gr AA9, WSPM 2. 400) Powder: AA1680 Measure: 11.2gr Lee Auto-Disc setting: 0.71 Min OAL: 2. powder coated cast bullet made with NOE bullet mold T元10-225-RN, lead hardness at 24bhn, sized to 0.310'. Caliber: 300 AAC Blackout (300 BLK) Projectile: 220gr Sierra Match HPBT Primer: CCI Small Rifle Primers (no. VihtaVuori N110 Sierra Lists for subs and super sonic loadings for 300 whisper. So a handload with 1680 might be quieter and subsonic if the guy loading the road has a 16in barrel and he’s loading it so it just barely cycles his firearm. Data from a POF 10.5' barrel, 1:7' twist. Powders that have been tested and tried by others. It depends on how much energy is left in the powder at the muzzle. 8 barrel, suppressed, 125 grains is reliable, 110 is possible, but it runs so dirty that it’s not reliable. The XTP bullet in Subsonic Handgun has built a. At 168 grains in a carbine gassed system it gets interesting without a suppressor, at 150 grains its a challenge in an 18 barrel to keep them subsonic. 300 blackout load data for 200 gr bullet - Rifle/Shotgun - Brian Enoss Forums Maku. I have been gleaning the inter-web for subsonic load data for a 10-10.5' 300 blackout AR pistol/SBR. The problem is “Quiet” is more then just a function of powder. Performance of 300 Blackout Subsonic meets or exceeds FBI Protocol terminal ballistic test requirements. Lightweight Subsonic Bullets in the 300 Blackout 20,939 views Mar 6. There is a litany of load data available.
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