I have been doing reloading for a while, but have been using pre-cast bullets. I decided to use all the lead I had around, and make my own. I am still learning the lay of the land on casting. I see “gas check” and I think of those little aluminum or brass “gas checks” that get crimped onto the bottom of the bullet. Although, I have also seen reference to a lube groove being called a gas check.
Looking at the drawing of the ‘358-640 Hollow point gas check’, it looks like it takes a crimp on gas check. It appears that the crimp on gas check is smaller then the .358 diameter. Does this take a .356 Gas check, or smaller? I do not see any specifications which say what size of gas check to use.
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