I have previously had good luck and accuracy sufficient for my needs with .45/70 bullets tumble lubed and then gas checks seated in a Lee push thru die.

I had hoped to achieve similar results with a .348 Winchester. I intend to purchase an Accurate 35-220 D mold, however Lee doe not appear to have an appropriate push thru die listed?? In the past, Lee offered a custom die service, but this appears to no longer be the case.

Is there a simple means to seat and crimp gas checks by hand, such as a shallow tapered .350 hole in a piece of steel and just give the bullet nose a light tap? I understand this would not size the bullet body, but I have had reasonable success shooting bullets as cast before.

Looking for any options or suggestions.

Thank you.

If you can't be a good example, may you at least serve as a dreadful warning