223 twists = velocity

[alf]

A barrel with 5R or C land configuration may/can typically let you run a hair more powder over conventional lands, resulting in more speed.

Barrel length is free velocity, the more the merrier.........

 

[seek1]

I have had real good accuracy and velocity with H4895, AA2015, Benchmark and N135. (55 grain bullets)

W748 is my control powder. It does not produce the velocities of these others, with lighter bullets. With 69 grain bullets, that is a different story.

I can get 2950-3000 fps with these powders safely, w/o pressure out of a 16 inch barreled AR15. (55 grain bullets)

I shoot a lot of Raccoons and Coyotes with these combos. Sierras 55 grain HPBT #1390 and Nosler 55 grain Ballistic Tip bullets meet, and exceed all my terminal and accuracy performance requirements.

When spring time comes, i plan to run a few tests with Power Pro Varmint. I have a bit of it i want to try out. W748 is really the only ball powder i have had much luck with.

What twist is your AR?

 

[arlaunch]

My Coyote/Coon rifles are 1:9 twist.

My Lion rifle is a 1:8

 

[Austin Laughlin]

What twist is your AR?

I’ve got a 223 AI built on a Rem 700 action, shooting 40gr at 4k.

Shoot some 53gr too, around 3620ish I think is what it was the last time I chrono.