Thread: .28 Nosler

@Ryan_Songhurst one of the very first articles I found, and there was a little something about an Allen magnum. Interesting-looed the Allen magnum website up. they do a few rather large overbore calibres from 25 up to a fecking ginormous 510
The 270 Am is based on a 300 Remington ultra mag-169.5gr custom pushing 3450fps
https://www.longrangehunting.com/thr...nosler.192273/

"I have a .270 Allen Magnum (one of the first Kirby built) with a 30" Lilja, 3 groove that attains phenominal velocities for this caliber (3650fps for 140gn Ballistic Tip) without reaching top loads. I shot a few of these during fire forming but decided to go the COW method to preserve my barrel.
The heaviest I currently have is the Wildcat 169.5gn RBBT ULD and the Berger EOL 170gn Elite Hunter. Last year I ran those at 3450fps (95gn US869) but decided to back off to 93gn and reset everything for 3340fps. That takes me from 14.25 to 15.75 MOA at 1K "