Have you ever wanted to seat a gascheck on a non-gascheck lead bullet
Well, here's the answer.
You'll need a SWAGE die body in a caliber you require -- like the type that C-H makes, it must be the one with the rounded ogive at bullets top.
In my case, I wanted to seat gaschecks on .44 caliber lead bullets of different weights.
To be able to get the Lyman GC to seat on the bullet one has to run a lead bullet backward up into the SWAGE die body with rounded ogive to put a very slight taper on the bullet's base. You'll know when you've got the right taper when the GC barely wants to go onto the bullet's base.
Next and final step is to put bullet and gascheck into a lubesizer press and seat the gascheck firmly onto your bullets base. The ramming seating action dispaces the lead base to fill the gascheck and making it firmly attached.
Try it, you'll like it...Mikey.
Jim