You don't have to convince us. Sounds like you are satisfied, so try 'em out. I hope they do hold together. Not exactly sure why you are wanting to shoot the round nose bullets when there are so many top quality spitzers out there.

Hornady must have redesigned their 250's for the Rummy. The Winchester version won't push the 250 to 3000 fps, which was the cartridge Hornady had originally made their .338 bullets for.