Gas Check for 9mm Lead Bullets

Was the bullet designed to accept a gas check? Is the bottom of the bullet stepped to a smaller diameter to accept a check? Bevel based bullets are not the same thing by the way. Gas checks are usually installed as part of the bullet sizing process as most that are now available are crimped onto the bullet base slightly. - do a search for lubricator sizers such as offered by Lyman, RCBS and Star. There are definite benefits to installing them if the bullet was designed for them.
 
gas checks should be added to bullets that are designed to accept gas checks.
these bullets have a step down in the heel of the bullet for a gas check to be crimped on.

we carry many sizes of gas checks in stock if needed.
 
I was thinking to force a gas check into a beveled base of a hard cast bullet. I do not see a stepped down portion in the base. I was assuming a gas check made out of copper sheet, stamped and formed like a bottle cap that can be forced fit into the base. Thanks for the clarification. Let me re-phrase my question. Is there a considerable benefit in using a hard cast bullet with gas check?



phishroy said:
gas checks should be added to bullets that are designed to accept gas checks.
these bullets have a step down in the heel of the bullet for a gas check to be crimped on.

we carry many sizes of gas checks in stock if needed.
Click to expand...
 
If you try to put a gas check on a bullet that was not designed for them they may lodge in the barrel creating an obstruction for the next bullet. The only gas check 9mm bullet that used to be common was from an RCBS mould at around 125 grains.

The gas check can reduce or eliminate leading in high velocity pistol/revolver loads. With properly sized hard cast plain based bullets (not bevel based) you can shoot normal velocity in a 9mm with minimal leading. If your chamber will take it .357 diameter bullets often work best in the 9mm--I use 130 grain .357 bullets intended for the .38 super in my 9mm's with good success. Not all 9mm barrels have large enough chambers to accept cartridges loaded with .357 bullets though.

fwiw, 44Bore
 
ambishooter said:
Is there any benefit in installing Gas Check for Lead Bullets? Who carries this item in the GTA area? Any special tool required to install?
Click to expand...
there in no benefit in using a gas check , at 9mm speeds the lead bullets are good to 1400 fps or around there depending on the casting of the bullet, a gas check is for highter speeds with lead bullets to stop that melting of the back of the bullet that makes it unstable. and as the other comments the cast bullets need a groove for the gas check ,yes it does . I have been loading pistol and rifle for for 30 years plus and never used a gas check for any pistol round
 
ambishooter said:
Is there any benefit in installing Gas Check for Lead Bullets? Who carries this item in the GTA area? Any special tool required to install?
Click to expand...

I haven't seen a 9MM bullet mold that casts for a gas check. I can't imagine why you would want to. I have run 9MM bullets well over 1100 FPS with no sign of leading.

Take Care

Bob
 
If you have a severe leading problem from an oversize barrel like my .3585? ruger P85, then gaschecks can be the answer. I now use .3575 cast with a card wad=no leading!
 
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