RARR 300 Blackout Review Part3 Final:18 Loads Chrono Tested

[mr.revolverguy]

Part1
http://www.dayattherange.com/?p=4781

Part2
http://www.dayattherange.com/?p=4815

One of the largest independent 300blackout load tests - 65 loads tested across 4 rifles
http://www.dayattherange.com/?page_id=3817

Part3:
http://www.dayattherange.com/?p=4872

If you happen to believe in the 300 Blackout or not there is one thing for sure, it's growth and popularity has continually been on the rise. Most popular is it's use in subsonic applications with SBR's and suppressors. Almost every ammo manufacturer is loading this close relative of the 300 Whisper in multiple offerings to fit just about every scenario. Even new comers like Sig have tooled up to produce a 300 Blackout offering.

When paired with the Ruger American Ranch Rifle in 300 Blackout, testing has proved to be some of the most fun I have had on the range in a while. To date the 300 Blackout hasn't proved to be as accurate as some of my 223 or 308 loadings but the thrill of the chase has been very rewarding. With ammunition producers like Sig and handloads produced with 220gr Sierra Match Kings on top of A1680 powder, things are starting to look really positive. Sig's first 300 Blackout offering begins with a 125gr and 220gr loads.



Loads Tested
Loads Tested:

125gr SST – 18gr Lilgun
110gr Nosler – 19.5gr Lilgun
220gr Sierra Match King – 11.5gr H4198
208gr Hornady AMAX – 11gr H4198
245 Missouri Bullet – 11gr H4198
203gr Palmetto Bullet – 9.7gr A1680
150gr Hornady – 15.5gr H110
Hornady Whisper Factory 208gr
Remington 220gr Factory
125gr SST – 17.5gr IMR4227
150gr Hornady – 18gr A5744
220gr Sierra Match King – 11.3gr A1680

The most accurate load of the day was with my reloads of Nosler's 110gr on top of 19.5gr of Lilgun, it was capable of a 0.751 group. The most accurate subsonic load of the day was the 220gr Sierra Match King on top of 11.3gr of A1680 at 0.805.


Full Review and Testing
http://www.dayattherange.com/?p=4872

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[oli700]

nice work, nice shooting !

I am back and forth on building a short upper ........I would really like to see some velocities. You put in an awful lot of work to not have chronograph involved

 

[mr.revolverguy]

At the very top
One of the largest independent 300blackout load tests - 65 loads tested across 4 rifles
http://www.dayattherange.com/?page_id=3817

Every load I have ever tested have been chronographed. The reason I did not post here was because of how large the file is and it won't format on the forum. If you visit that link you will see the chrono numbers.
Disclaimer
There are no ads popups or anything on my website so I get nothing for you visiting. I fund it myself with a few other friends, we do it to be able to give back and because we love it. With hopes of attracting newcomers to our great sport/past time.

 

[oli700]

thank you ...I love this sort of thing.
I love reloading and testing rounds, sometimes I drop it all together and just shoot away from the bench because it can really absorb you .......My most recent adventure I got sucked into finding the best powder and projo weight for short barrel AR...........my preciousssss , I feel ya on the love for it keep it up