These are our crimp on .30 / 7.62 mm caliber gas checks that size to .312. They are made with .015 thick aluminum, so they work very well when sized .309 to .312. They are made like our .015 copper gas checks, nice deep clean formed gas checks. We are selling these direct, cut out the middle men and buy right off the press. Made to fit tight on a .284 shank.
Our gas checks are sold in resealable clear plastic bags. Shipping is based on each item's weight. 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 $3.95, 250 for $5.75, 500 for $10.25 and 1000 for $18.50.
Prefer copper/gilding brass .30 Cal gas checks?
Click here for our in house made premium line .30/7.62 mm caliber gas checks: .30 / 7.62 mm Caliber .017 Copper Gas Checks
Posted by John on Mar 26th 2019
I have found all the gas checks I have bought from Sages to be of very high quality.
Posted by Al on Mar 20th 2019
These gas checks did a great job in mid range cast loads. The price is excellent. I'll be ordering more soon.
Posted by Unknown on Aug 30th 2018
These checks are consistently good.
They fit well and perform better!
Posted by J. on Jul 5th 2018
Quality product for a reasonable price.
I will be buying more of this and other Sage's products.
Shipping was incredible.
Posted by Steve Phillips on Jul 2nd 2018
Checks have worked very well on all My 30cal bullets from Lee molds.
I seat them with a Noe push through sizer before Powder coating then size again...
Will be buying more!
Posted by Michael on Jun 27th 2018
I'm a reloader of 7.62x39 using cast bullets. I've used copper checks before and decided to give aluminum a try. Size is accurate, fit is precise but these do not grip well on harder lead alloys such as Linotype or Foundry. I experienced checks being pushed off during sizing due to the edge of the check not cutting into the bullet shank. I was, however, using a Carnauba based bullet lube. The increased hardness of the lube may have been the primary cause of push-off. Checks that pushed off were easily reseated without issue. Bullet accuracy was not affected by push-off and I did not see where any checks separated from the bullet during test firing.
Final analysis: With these checks installed on a 140gr 0.311" bullet, I have the accuracy to hit center on a 2" steel pipe at 100yds with only a red dot sight coming from a 7.62x39 AR platform.
I recommend these to any reloader who's budget conscious and needs a quality gas check for their cast bullets.
Posted by Terry Lichtenberger on Feb 15th 2018
I have not had a chance to even get out to try these gas checks but I have looked at several of them and measured a few also, they seem to be pretty consistent and weights are also. I plan doing an update later but from what I see they look like they will get the job done.
Posted by Steve on Sep 25th 2017
Great product. Fair price. Works for me on 30-30 Lee mold !!
What else matters!! :) :)
Posted by Mark E Smyth on Jul 16th 2017
I've used other brands in the past. never again. Sage's fit perfectly, snap right on my Lee C312 cast bullets.
Posted by Mike M. on May 21st 2017
If you shoot a lot of gas checked bullets you know that the check adds tremendously to the cost. Aluminum checks will save you a few bucks. Using 2 different Lee moulds and sizing to .310" in a Lyman 450 and then running them through a Lee push thru die to bring them to .309" left them crimped firmly on the bullet. I resisted aluminum checks at first, but after using them awhile I'm sold on them.
All prices are in USD.