300 Blk bolt action loads

Reloading equipment, methods, load data, powder and projectile information.

Re: 300 Blk bolt action loads

Post by wanneroo » 29 Jun 2025, 11:35 am

Old Russ wrote:I might do some testing, load up the same amount of each powder (2205 and 2207) and try three shot groups at 100m and compare them for velocity (if my cheap chrono decides to work that day), drop and grouping.

I don't claim to be a particularly good shot but I'll try get the bench do most of the work.

Also Berrys make a nice 220gn pill for subsonic use in the 300 blackout, they even call it the 300 Blackout. A lot cheaper than the SubX which is nice. I'll also test these for drop compared to the faster rounds.

It's pretty much rained all year here so far so don't expect results any time soon.
Russell.


I did a whole project on Youtube for the 220 Berrys Bullet and 300 Blackout called "Project Big Booty".

I will revisit it again for more test data when I get a bolt action 300 BO and a short barrel 300 BO.

I found them to be accurate and good shooting bullets and in fact even if you don't load them subsonic but at higher supersonic speeds, they shoot good too.
wanneroo
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