Anyone have info on the minimum velocity to get useful expansion out of the Nosler 180 BT??

Wouldn't it be nice if any of the Bullet companies put any really useful info on their web site.

Imagine this a chart from smallest diameter and weight to the largest, BD, SD, Velocity range. Sure sounds hard to me. Can't imagine how the comapanies could ever do something like that!

LouisB

Sierra used to do something like that, but I don't know if they still do. I'm unaware of anybody else ever taking the time to make that info available. Part of the reason may be that some of these data points you seek are changlings depending on atmospheric conditions, and internal details of the gun and load. As to your question about min. velocity for BT expansion: I think you can count on reliable expansion down into the 1400-1600 fps range, perhaps lower. I'd not be the least surprised if BT would open up at subsonic velocities, but they build different kinds of BT's so your results may vary. .30 Cal and larger have a bit more meat in the jacket, to help with integrity.

Nosler lists it in the 1500 fps range.

seafire

1800 fps or so