Source for low cost aluminum or copper .38 cal gas checks?

Bought a new 158 grain gas check Lee mold for .38/.357 and wonder about a source besides the pricey Hornady and Lyman copper gas checks. I've never used gas checks but want to try them in my 77/357 which leads somewhat with wheel weight alloys. Want to try checks before lapping the bore. Thanks for any leads. Don.
** Oh. While I have your all's ears, please share thoughts on aluminum vs copper checks in handgun loads.

Google Gator gas checks. They can be purchased from several different places.

Thank you so much. Now I need to study aluminum vs copper, and make sure I buy the right style. The mold is specifically for a gas check so I'm thinking I don't want the "plain base" checks. May call Sage Outdoors to confer. Don.

I have use both aluminium and copper and have not noticed any difference in performance from one to the other

Thank you. That's good to hear. Don.

Go to :
http://castboolits.gunloads.com/
or...
https://www.handloadersbench.com/

They will have everything you need to know about gas checks.

Make your own--patmarlins.com

Bill

And use soda cans for the aluminum. Leading is a function of size of the projectile vs the bore size. In other words fit the projectile slightly larger than bore size. Good luck.
gramps

It probably doesn't help much but I like the Hornady gas checks best as they crimp on and stay put. They are thicker at the top so they "crimp on" a little tighter. They are expensive but then you get 1000 in a box.

protoolman said:

It probably doesn't help much but I like the Hornady gas checks best as they crimp on and stay put. They are thicker at the top so they "crimp on" a little tighter. They are expensive but then you get 1000 in a box.

Click to expand...

^^ THIS ! ^^

I tried Gatorchecks twice and had to return them both times. If you wait around for a sale you can get the Hornady checks for $25/1000. Buy a few thousand and you'll forget what they cost.