Barnes X bullets .270 win.

[mahony1977]

So has anyone actually worked up an accurate load with a 150 grn tsx yet ? I've tried with RL22 , H1000 , IMR4350 so far Best group's were around 3'' . Really didn't stabalize well at lower velocities .

 

[mahony1977]

Well I've been working my way up, useing IMR 4350 from 50 grns I'm now at 55 grn made it to 56 but I backed off .

NOTE MAXIMUM LOAD IS LISTED AS 53 grn's DO NOT TRY THIS IN YOU"R RIFLE .

This is the best group I've gotten from the 150 tsx

next time I'm gonna try it with a dirty bore I'm getting the same first shot flyer's .

one recovered bullet @ 100 yrd's

the closest thing I have to a gong , the tsx was the first bullet to penetrate three discs .

 

[sunray]

"...I would like to use IMR4831 because I have lots of it..." There's 130 grain IMR4831 Barne's data on Hodgdonn's site. Contact Barnes or buy one of their manuals for a 150. Barnes bullets require Barnes data. Solid copper bullets fly differently than lead cored bullets.
62 grains of anything is over max for a 150.

 

[pockets]

Barnes states a 1 9.5 twist for the 150 TSX.

 

[bedrock]

Bat - I've shot 54.5 grains of 4831 behind 150 bullets for 40 years in at least a half dozen 270's. You are going to be safe at 54 grs but will likely see presssure signs at 56 or 57 grains.