These are crimp on Plain Base gas checks made for a .400 size bullet.
The checks are sold in resealable clear plastic bags. Made from Litho plate, color may vary. They are made to wrap around plain base bullets without a gas check shank. We recommend sizing these on base first. USPS flat rate boxes and First Class mail are used to reduce shipping cost. Most orders ship in one business day Monday through Friday.
Sold in 4 quantities: 100 for $4.25, 250 for $8.25, 500 for $15.50 and 1000 for $29.00.
Posted by GaryB on Nov 15th 2021
I had a quanity of 40 cal bullets that were cast from of a very soft alloy, and shot poorly. I deceided to try these gas checks, just to see how they worked. I bought 500 of them. They were very reasonably priced. Bullets were previously sized to .4005, and lubed. The gas checks, easily slipped onto the bullet bases. I ran them base first through my Star sizer, and they came out perfect. I fired some from an arm rest, and they grouped well.
As I stated, these bullets were cast soft, and still it took a little effort to crimp the gas checks on the bullets. If the bullets were cast much harder, it would place undue stress on the sizer crimping them. Probably the Lee sizer would be the way to go for these. But then again, if the bullets were cast hard, you wouldn't need gas checks.
Posted by David J. Caldwell on Oct 21st 2020
Excellent product. Great Quality, Highly recommend those product.