Gas Check Review

[BJung]

I want to add gas checks to my cast bullets. Which is better by producing a tighter group?: Pat Marline, Sage, Hornady, Lyman. Inlcude pro and cons please.

[hunter74]

I find Gator GCs easier to crimp on than Hornady. My experience is that Hornady checks are very stiff. Annealing checks is not a thing I spend time on

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[Wheelguns 1961]

I think that you are overthinking this. As long as they are seated square, I haven’t noticed a difference. I buy what is cheap and available. Others may disagree

[rmb721]

I use Hornady, but I do anneal them.

[Minerat]

I make my 45s out of aluminium, have use hornady, sage and Gator can't tell the difference. But the hornady crimp on better.

[BJung]

I use Hornady, but I do anneal them.

How does annealing gas checks help?

[BJung]

Any difference in performance between the aluminum and copper gas checks? I assume you are adding gas checks to a .45 long colt, yes? I think a gas check would benefit a 9mm and 40 cal the most because of the higher chamber pressure, yes?

[fc60]

Greetings,

When you anneal a gas check it becomes soft.

When you size/crimp the check onto the bullet there is less "spring back" of the gas check.

My friends are into cast bullet benchrest and annealing gas checks is something they routinely do.

Me? I am too lazy and use them as received.

Bear in mind, I never have won any of the matches.

Cheers,

Dave

[405grain]

I've used both Sages gator gas checks and Hornady gas checks in several calibers and haven't seen any noticeable difference in performance between the two. I prefer the Sages checks because they seem a little softer, and they generally cost less than Hornady. Also, sometimes Hornady checks can be sold out in the calibers that I want at some of the retailers where I buy gas checks. Sage's can be sold out too, but they generally restock their supplies faster than Hornady does. I have a Pat marlins check maker for 30 caliber, and make gas checks from .014" aluminum flashing. Again, I haven't seen any difference with these than with other brands. On a rainy winter day when there's nothing else to do I can pop out a years supply of aluminum checks in one afternoon. I've never used Lyman gas checks. I've heard a rumor that Lyman gas checks are made by Hornady, but they cost more than Hornady. I don't know if that's true or not, I just haven't used them.

[dale2242]

I use Hornady, Gator, or Sage CRIMP ON checks.
I don`t want them coming off in flight.
I`ve had Lyman come off and hit the back of my chronograph.
Losing gas checks in flight has to impact accuracy.

[BJung]

Will the 35/357 gas check fit both a 9mm and .357

Will the .401 fit a 40ca

Are they made to fit the narrow base? I've heard of some GC that fit over the cast bullet