You'll need a C-H swage die in the caliber you want to work with.

This die has a tapered ogive in its upper chamber with a small flat met lap nose.

Run a non-gascheck bullet up into the die BACKWARDS to put a slight taper on the base of the non-gascheck bullet. But adjust the die so it only performs a slight taper to allow you to barely slip a gascheck onto the lead bullets base.

Last step, put a gascheck onto base of bullet and seat it in your lubesizer press or your swaging press...either one will do the job.

Any questions?

http://i42.photobucket.com/albums/e321/44and45/P5040033650Xrtpswagingbulletbasefor.jpg


Jim

Really have to like gas checked bulets but i like the whole make-it-work-like-I-want-it concept.

Have lathed them for a base and then just seated the gas check when i wanted to do a comparison test...wouldn't buy a lathe just do do that but it is an interrresting compariosn.

If you just want to see if it will help with leading you don't even have to put it onthe bullet. Run just the gas check through the sizer to straightne out the crimp, then put it upside down in the case and seat the bullet normally. Still protects the base and helps with leading just like it's supposed to.

Be careful with your chronograph. Might want to move the screens back 5' or so. These fly in all directions since the separate from the bullet immediately. Think of trying to throw a Frisbee with the dome forward!

If you just want to see if it will help with leading you don't even have to put it onthe bullet. Run just the gas check through the sizer to straightne out the crimp, then put it upside down in the case and seat the bullet normally. Still protects the base and helps with leading just like it's supposed to.

Be careful with your chronograph. Might want to move the screens back 5' or so. These fly in all directions since the separate from the bullet immediately. Think of trying to throw a Frisbee with the dome forward!

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Sorry, guy. I wouldn't do that. I want my gaschecks to be mounted tight on the base of the bullet like they're supposed to be.

The air space volume in the brass case should have full space capacity with the powder laying where it will.

My idea is for those who want to attach gaschecks onto a non-gascheck bullet -- its a take it or leave it proposition. :D

Jim

Got to agree with you on that. One of the things a gas check seems to do is act a bit like a rifling-wrench (of course it also "checks gas")...to do that, it has to be attached.