The .30 caliber Gator Checks are commercial quality gas checks. Made for general .30 caliber use from .017 thick 210 copper.
The gas checks are sold in resealable clear plastic bags. USPS flat rate boxes and First Class Mail are used to reduce shipping cost. Most orders ship in one business day Monday - Friday.
Sold in 3 quantities: 250 for $7.49, 500 for $12.99, and 1000 are only $23.99.
Our new .017 30 caliber copper gas checks are uniquely made by us in house:
Click here for: .30 / 7.62 mm Caliber .017 Copper Gas Checks
The aluminum .30 caliber gas check offering is also a nice choice for common .30 caliber barrels.
Click here for: .30 /.308 / 7.62mm Caliber Aluminum Gas Checks
Posted by John King on Aug 28th 2017
I use these for .30 WCF on a 170g LFN in a Marlin 336 (microgroove) and Winchester 1894. They work well with Alox lube and a Lee bullet sizer.
Posted by BA on Jun 14th 2017
These stayed tight at .313 as well as .309
Posted by Ray on Jun 6th 2017
These just work period.
Posted by Norman on May 24th 2017
I'm completely satisfied with the Gator Gas Checks. I've been using this Checks for Lee 200 grs .309 sized rilfle bullets, which are driven by my charge up to 1700 fps giving best results with my 7,5 x 55 Swiss Ordonance rifle. No fouling inside the barrel and perfect accuracy.
They fit accurate and tight and I had no problems to snap on them without using the press. They are also much cheaper than the stuff of the competitors. I will order this Checks again.
Posted by M on May 22nd 2017
I'm giving it 4 stars since I haven't had my hands on any competitors like Hornady. I ordered they were in stock and shipped rather quickly. I think all in all it took 4-5 days from purchase to on the bench. I've already worked up a load on the 30-06. These gas checks are not the "weak link" for my groupings. At 50yds I can get very close to the same hole with them. 4 in a Dime size. Maybe more but that's all I had of that load. At 2.4 cents a gc, I'm coming back when I burn thru these!
The fit was fine after sizing but some did come off when I had to dissemble some rounds kinetically. New gcs went back on without an issue.
Posted by Artus Roodenweiler on Apr 20th 2017
I think the headline says it all. These do fit rather tight on 7.62 (.312) 160gr bullets cast from Lee dies. I'm not going to knock a start off for that though. It isn't Gator's fault Lee dies drop a bullet with a slightly larger shank than standard when casting with Linotype.
These gas checks are consistent in size and have been properly work hardened so they grab onto the shank like ... well ... like a gator. To properly seat these on Lee cast 160gr bullets in 7.62 (.312) diameter, I set up my 9mm seating die, my Lee .311 sizing punch and simply pressed the checks onto the base. Then I swapped dies and sized the bullets per Lee's instructions. The gas checks seated squarely and locked on so tight i couldn't pry them off with a screwdriver.
In the future, I'll use the large neck flaring die to open the gas check up so I don't have to press as hard when using the 9mm seating die to seat the check.
I will definitely buy these again.
Posted by Brian Craddock on Apr 9th 2017
These work great on my 309 Lee mold for my 30-30. No issues at all.
Posted by Rolando on Apr 6th 2017
I bought my first .30 caliber gas checks from this website. I had no problems whatsoever. A few of them got messed up in the process. But it was a problem with the die (it was dirty).
Posted by Jeffrey Young on Mar 2nd 2017
First class gas checks and saved $13 from brand i was using. Accuracy same as the more expensive ones.
Posted by Old Smokey on Jan 15th 2017
Bought my first batch from Sage and loved them. I recommend them and will buy more.
All prices are in USD.