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1. #300 blackout subsonic load data for 175 grain bullet how to#
2. #300 blackout subsonic load data for 175 grain bullet full#
3. #300 blackout subsonic load data for 175 grain bullet code#
4. #300 blackout subsonic load data for 175 grain bullet free#

Shooting groups with a bolt-action 300 Blackout rifle.A different scope or higher power scope (reticle on the Strike Eagle not best for groups).I’m pretty confident that I could get the groups even tighter if I experimented with the following: One of the groups came in at exactly 0.900″: The AR Diamond trigger helps a LOT with concentration when shooting groups for accuracy like this! Groups averaged about 1″ at this distance which is plenty good for the kind of work I’ll be doing with these loads. I didn’t have a bipod mount on my upper, so I shot off some sand bags at maximum magnification: 6 power.

Accuracy Testingįor accuracy testing, I decided to shoot some 5-shot groups at 50 yards, the maximum distance I’ll plan to shoot at for this ammunition scenario. That should bring the velocity to about 1040-1050 fps, which would be perfect. These are some great results! I’m thinking I’ll try 9.5 grains of H-110 as a compromise between energy retention and “supersonic buffer”. I chronographed two loads (see load data above), one with a 9.0 grain H-110 powder charge, and one with a 10.0 grain H-110 powder charge. The loaded ammunition looked as good as it shot:įor the chronograph data, I used the Caldwell G2 optical chronograph and the Caldwell companion app on my iPhone (see the f ull review I did on this system HERE).

#300 blackout subsonic load data for 175 grain bullet how to#

I’ll do some experimenting to figure out how to best solve that problem! This caused some issues with cartridges tipping forward or back of the press (no going into the completed cartridge bin). As mentioned in the video, the only real challenge loading with this setup is the strange balance (center of gravity) for these “top heavy” cartridges. This ammunition was loaded on the Hornady Lock-N-Load AP 5-station progressive reloading press:Ī nice addition here would be a powder check die like Hornady’s Powder Cop, or the RCBS Lock-Out die.

#300 blackout subsonic load data for 175 grain bullet code#

Always cross-reference load data with manufacturer’s published data.Īs mentioned in the video, if you’re looking for once-fired 300 Blackout brass, you can find it at Capital Cartridge (use “ULTIMATE” code to save 10%!). Ultimate Reloader is not responsible for errors in load data on this website. 9.0, 10.0 grains Hodgdon H-110 powder (See chronograph data below).Tested LoadsĪfter some testing and trials, I settled on the following components for my subsonic 300 Blackout loads for this article: This rifle performed flawlessly, absolutely love the AR Diamond trigger! I will however be looking for a better magazine setup for 300 Blackout scenarios (metal mag used would bind cartridges when loading). TriggerTech AR Diamond 1.5lb Trigger (see my review HERE).CMMG RipStock with 6 Position Enhanced Receiver Extension.

#300 blackout subsonic load data for 175 grain bullet full#

This link to nosler covers their 110gr varmaggedon all the way through their 220gr HP.īelow will be links to PDFs for all of Speer reloading data for their bullets from 110gr-200gr.Berry’s 300 Blackout 220 grain bullets fill an important niche in the “heavy 30 caliber” bullet market, offering optimum weight and performance for 300 Blackout without breaking the bank.įor the testing performed as a part of putting this article together, I used the following AR-15 rifle configuration:Īnderson Manufacturing AR-15 300 Blackout Upper:ĬMMG Resolute AR-15 Lower: ( full rifles HERE, my CMMG 350 Legend story HERE) It’s especially nice in states like Virginia where we have a minimum caliber to hunt deer and 300 blk passes the restriction that 223 can’t.Ĭheck out our 300blk head stamp chart to determine if your brass is suitable for conversion! You can load just about anything from 100gr supersonic to 240gr cast subsonic with no real modification to the firearm.

#300 blackout subsonic load data for 175 grain bullet free#

This is where you will be able to reference links to PDFs, websites, and other great FREE resources all compiled for you to use!ģ00 blackout is such a neat cartridge, very versatile.