IMPORTANT: Please view the special notes by clicking hereīe Alert: Publisher cannot be responsible for errors in published load data. Note: 168 GR bullets can be used for all 165 GR data listed. 308" bullets: 165 GR Hornady GMX, IB, SST, BTSP & SP COAL: 2.215" or 168 GR Hornady A-Max & BTHP COAL: 2.215 maximum COAL: 2.260" maximum case length: 1.368" trim to length: 1.358". Gun: Advanced Armament Corporation AR-15 barrel length: 16 inches case: Remington primer: Winchester Small Rifle bullet diameter. Warning! Notes: This data was shot by Brian Pearce, Wolfe Publishing Company. 300 Blackout (Using 165/168 GR Hornady Bullets) 300 Blackout (Using 178/180 GR Hornady Bullets) Warning Notes: This data was shot by Brian Pearce, Wolfe Publishing Company. A buddy of mine tried some Hornady RN with little luck but the Seirra RN would cycle/feed ok most of the time.300 Whisper /. Hornady fmj-bt, since they are relatively inexpensive. I am attempting to work up loads using 150gr. AR platform, 8' Wilson Combat barrel, standard gas port size and gas block, obviously pistol lenght gas system, 1-7' twist. Re: 300 BLK Load Data The 220 subsonic came out first because the machine. Even though they both are round nose bullets they have a different profile. I am currently working on a subsonic load for a 300 blackout. 300 AAC Blackout - Manufacturer Loading Data Shellholder: Hornady 16 Lee 4. but the OP was referring to Hornady round nose, looks like you was using Sierra round nose. You will have to tweak subsonic handloads based on your. Hi-Standard 300blk, 16" barrel, carbine length gas tube, AAC Cyclone-K. Sierra Bullets has just added extensive load data for the 300 AAC Blackout (300 BLK) cartridge. Both fed, cycled, grouped and BHO'd although the velocities were a surprise. 223 Remington/5.56 NATO AR magazines, limiting overall loaded length (OAL) to 2.26 inches. I'll try some RN's loaded longer than 2.100 COAL and see how they feed and shoot.īird wrote:I just got back from the range (as in 20 minutes ago) with some chrony data using 220 SMK's and 220 RN's. The Blackout allows for the creation of supersonic loads with bullets weighing 90 to 180 grains and subsonic (less than 1,125 fps) loads popular with suppressor owner with 200- to 230-grain bullets. The advantage of 300 Blackout is if the shooter wants an AR-pattern rifle or pistol that is easily suppressed, they can use a common magazine and typically only need to swap an upper receiver. This showcases the dual purpose of the round. They might not feed as well being so short. The subsonic 300 Blackout loads are often compared to 45 ACP, 10 mm or 9mm subsonic rounds. This should approximate the same internal volume and get me closer on fps. I'm also going to measure the headspace inside the cartridge of the 220 SMK's and compare to the 220 RN's without making adjustments to the seating die. 5 grain of powder for my next loads of the RN's at this COAL. Since the RN's are so much shorter than the SMK's, there was a lot more head space inside the cartridge and it really showed in the velocities as both were loaded to the same respective powder charges. The RN's were seated initially without making any adjustments to the seating die but looked to be really short, so I pulled the first one and re-seated to 2.100 which, if I remember was an increase of 0.1"-ish. As they were loaded, they were pretty much a compressed load although I didn't measure. I'll have to keep working down the charge to get them subsonic. The SMK's were loaded to max magazine length. All rounds shot suppressed.Ģ20 gr Sierra Match King loaded to 2.260 COAL, Lake City Brass, Win small rifle primer, 11.3 and 11.5 grains H4198. Hi-Standard 300blk, 16" barrel, carbine length gas tube, AAC Cyclone-K. I just got back from the range (as in 20 minutes ago) with some chrony data using 220 SMK's and 220 RN's.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |