First rounds in the .223 Ruger American Predator.

[bladeracer]

I've been chatting to Brian of BT Sniper swaging dies.
He's passed my details along to some Aussies using his dies so hopefully I can get some more swaged bullets to try in my rifle.
He's sure he has customers using his bullets in 7"-twist barrels though.

[Tripod]

I've been chatting to Brian of BT Sniper swaging dies.
He's passed my details along to some Aussies using his dies so hopefully I can get some more swaged bullets to try in my rifle.
He's sure he has customers using his bullets in 7"-twist barrels though.

It's not the velocity that's making them come apart it's the RPM. I am having no problems with them in my 22-250 at close to 4000fps but it is only a 1 in 12. so it is doing about 240,000 rpm. Rough calculation has you pushing them at 290,000 RPM. These projectiles are made to be as soft as possible to maximise killing power on small game, To make them hold together at that sort of rpm I would have to make them harder and then they would be no better than the commercial offerings. Go and shoot a fox or cat with them and you will see what I mean.

[bladeracer]

It's not the velocity that's making them come apart it's the RPM. I am having no problems with them in my 22-250 at close to 4000fps but it is only a 1 in 12. so it is doing about 240,000 rpm. Rough calculation has you pushing them at 290,000 RPM. These projectiles are made to be as soft as possible to maximise killing power on small game, To make them hold together at that sort of rpm I would have to make them harder and then they would be no better than the commercial offerings. Go and shoot a fox or cat with them and you will see what I mean.

Yes, I know, although I calculated 304,000RPM.
If they come apart before they hit the fox they aren't going to do anything
I'll work loads downwards until they stay together and then tune for accuracy - hopefully they won't have to go so slow that they don't expand on the target.
I would still like to see them tested in other 8"-twist barrels though. It could just be mine.