These are 30 caliber Plain Base gas checks and have been tested from .309 to .313.
The checks are sold in resealable clear plastic bags. Made from Litho plate, color may vary. 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 $3.99, 250 for $7.50, 500 for $15.00 and 1000 for $28.00.
Posted by RUSSELL UMEKI on Nov 3rd 2020
The bullets must be run thru a Lee sizing die to press on the gas check. To get enough leverage to push the bullet thru, the die can only be screwed in a couple of turns. Round and pointed nose bullets are difficult to center on the punch. I had to make a sleeve to center the bullet on the punch and hold it there while pushing it into the die. Installing the gas check will cause round and pointed noses to get flattened. The gas checks work fine but are difficult to use on anything other than flat nosed bullets.
Posted by Unknown on Sep 1st 2020
I bought these to use in rifle loads in the 32-20 on bullets cast .312 with a Lyman 311008 mold. They seem to work well. It has made it possible to use this mold for higher velocities. You do need to carefully press them on or they will go on crooked and some seemed smaller but it may of been the bullet bases.
Posted by MB on Feb 24th 2020
These plain base gas checks allow me to put a gas check on a 30 Caliber plain base cast bullet, prior to the final size & lube process.
They make the normal plain base moulds currently available into a GC version.
With these plain base gas checks you get two moulds for the price of one.
I install them onto plain base cast bullets in .005 step increments.
This allows me to eliminate the tearing that otherwise might occur if one tried to do the gas check installation all in one step.
This gives the gas check a finished look on the cast bullet.
Posted by Mike on Feb 24th 2020
These plain base gas checks allow me to put a gas check on a 7.7 MM (303 British or a Mosin-Nagant) plain base cast bullets, prior to the final size & lube process.
Posted by Phillip Anderson on Oct 18th 2019
They fit great on bullet diameter of .311 after I flared the skirts of the gas checks, I used the base of a british 303 bullet.
Posted by Unknown on Aug 24th 2017
These checks had very rough edges and I had to open them up with the end of a center punch before they would fit on the bullet base. After installation, they crimped fine.
Posted by Anthony on Aug 4th 2016
These plain base gas checks are the coolest things since metallic cartridge cases. Getting them on requires a bit of TLC since they are thin and the bullets weren't designed for them. But the results are amazing. No lead on the bore even when pushed hard. Velocity I never dreamed of AND good accuracy. I had a whole bunch of .309 LFN 165gr bullets for 30-30 with plain flat base. These go on nice and I can shoot them up to 1800fps with no problems.
All prices are in USD.