Loading... Please wait...

Hover over image to zoom

  • 45 Caliber Gator Gas Checks

.41 Lyman Caliber Gator Gas Checks


 Product Description

These .41 copper Gator Checks are the Lyman style with a shank size of .397, its a thin crimp on gas check.


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 $10.50, 500 for $20.00 and 1000 for $38.00.


Please Note: There are different gas checks for the .41 caliber molds and one especially for .40 caliber molds.
#1 .41 Lyman - the shank size is .397 Used on .41 caliber Lyman molds and a few custom molds.
#2 .416 Rifle - the shank size is .393. These fit on .41 caliber RCBS, Saeco and some custom molds.
#3 .41 BSS - the shank size is .379. These are an improved .41 caliber gas check now used by a few custom mold makers. 
#4 .40 BSS is a gas check especially made for .368 shank 40 caliber NOE bullet mold and other custom .40 caliber molds.

 NOTE: The shank diameters may vary by one or two thousandths from the diameters listed above.


 Find Similar Products by Category

 Product Reviews

Write review

  1. Product worked very well 5 Star Review

    Posted by on Apr 20th 2023

    I use a Lyman 410610-GC mold that I cast for use in my .41 Ruger 3 screw .41 Magnum and Henry 41 Mag Rifle. The Sage Gator gas checks for a Lyman mold worked as advertised. Very well.

  2. Top quality Gas Check at affordable prices! 5 Star Review

    Posted by on Mar 18th 2023

    Top quality Gas Check at affordable prices!

    Thank God for Google, this is how I found Sage when looking for a Gas Check Supplier. Sage is able to supply Gas Checks for all my Casting Needs.

    Friendly and courteous, love dealing with Sage!

  3. Extremely well manufactured 5 Star Review

    Posted by on Jan 19th 2022

    Worked really well with the Lee .410 cal bullet sizer I utilized...*simply a heads up, make sure that the cast bullets that you add these gas checks to have a bevel at the base of the bullet itself, not just a square/flat base.

    Extremely great service from the Sage team as well...great product and service...what else can one ask...

  4. Great Product 5 Star Review

    Posted by on Jan 30th 2020

    I had a hard time finding .41 caliber gas checks. I ordered 3,000 of these. I am very happy with the performance, price, and service. I received my order within 48 hours of placing the order. A pleasure to do business with this store. Would recommend to a friend and will buy again myself

  5. great product. 5 Star Review

    Posted by on Oct 13th 2018

    This is the best source for lyman bullets gas check.

  6. .41 cal. Lyman size gas checks 5 Star Review

    Posted by on May 31st 2018

    I have a .41 caliber custom mold made for Lyman gas checks. It a rifle bullet for a .40 caliber rifle, I shoot it in three different 40-65 rifles. Since Lyman quit making that size, I have had a difficult time finding checks
    to fit bullets from this mold. These work and are very good quality.

Current Stock:



Click the button below to add the .41 Lyman Caliber Gator Gas Checks to your wish list.