•• Need starting point for 155g Barnes and Reloader 7 •• 300 Blackout ••

[SudburyShooter]

•• Need starting point for 155g Barnes and Reloader 7 •• 300 Blackout ••

I've searched all over and can't find anything. Usually I use the "H" family and things are kinda easy.
Looking to load some test rounds. Doubtful I'll get anything accurate with a lighter bullet subsonic, but worth a shot.

 

[SudburyShooter]

Fwiw, Reloader 7 is similar to IMR 4198 which has lots of data. Suppose I could start at the lower ranges and work up to something decent.

 

[just having some fun]

I've searched all over and can't find anything. Usually I use the "H" family and things are kinda easy.
Looking to load some test rounds. Doubtful I'll get anything accurate with a lighter bullet subsonic, but worth a shot.

There is 12 or so Powder that work with the blackout

More than that is you are using a Bolt gun --- reloader7 is not one of them

Question ??? Why the 155 g barnes bullet ???

 

[SudburyShooter]

Won't be bolt. It's for a SBR.
155 grain because I have stock.

I'm fairly certain I'll need a powder like 110 or 296 for the 150's
And I'll use my Reloader 7 on 200+ grains.

 

[captainmike]

try Accurate1680 the best for me with any bullet weight in 300 blackout
for 155 gr start 15gr around 1600 fps to 19gr max around 2000fps

 

[just having some fun]

I've searched all over and can't find anything. Usually I use the "H" family and things are kinda easy.
Looking to load some test rounds. Doubtful I'll get anything accurate with a lighter bullet subsonic, but worth a shot.

Work your way up
Some of the data out there is wonky ----> so don't start at max

I wont put the www of the place that has some top loads but try these

ht tps://sierrabullets.files.wordpress.com/2013/07/300-aac-blackout.pdf
This data is ok

ht tp://www.nosler.com/nosler-load-data/300-aac-blackout/

some of the data is older so it could be 4227 h or the IMR so user beware ----> Imr says made in Canada but you don't know what they used /// if not it the H

if shooting cast there is also data out there too

 

[porpoise]

I use n 110. I cant use the amount of powder most say is max in my bolt gun. 16 .2gr max for 150 gr. Bullet. I also have rl 7 it doesnt work well with 155 fill it up into the neck and press the bullet into it worked as well as a certain length for me also the point of impact is much lower with rl 7 in my rifle so i dont fiddle with it any more.

 

[cr5]

I use Lil'gun and A1680 for that weight of bullet.
Hopefully Suputin will find this soon, he has experience with pretty much every bullet weight and powder imaginable in the 300BLK. I think he was using trailboss with 155gr subsonic but I can't remember if it was in his bolt gun or AR.