RCBS CASE MASTER GAUGING TOOL
Product Information
A quick, convenient way to determine several important case and cartridge dimensions. The CaseMaster gauging tool measures case neck uniformity, case neck thickness, case length and bullet run-out. All are important to accuracy and safety. Detects case head separation before symptoms are apparent on the outside of case. Much quicker than a dial caliper and makes a tedious job simple and less tiring.
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Our Price:
$56.99
$1.14 per piece
In Stock
Item #:
WINU300MAG
Read 2 Reviews - Average Rating: 5 stars
RCBS CASE MASTER GAUGING TOOL
By Jerry W. on Jan 21, 2023
As you are trying to improve your reloading there's no way of knowing unless you measure it. This is a great tool to be able to check your case & your loaded round for concentricity.
A worthy investment
By Phill H. on Aug 07, 2020
Even if you're just curious with how consistent your press and dies are performing, investing in a tool to measure your brass is a good investment.
If you're a tinkerer, and like knowing everything about your brass, it's a must.
I have a bushing neck sizing die, and I use this tool to measure the case neck thickness of brass to determine what bushing size I should use. This is actually a pretty handy feature that is more reliable that trying to measure with your standard vernier micrometer.
I also use this to measure how concentric my rounds are, both with the re-sizing of the brass itself and of the seated bullets. This can also be used on off-the-shelf ammo to help sort out the rounds that might be fliers.
Lastly, this tool has an attachment you can use to help feel and measure for incipient case head separation. I personally use this a lot since I reload for .303 British, which headspaces off of the rim of the cartridge and is notorious for chamber dimensions. I often have case head separations before I have split necks or loose primer pockets. Usually I have to pay attention for that light ring that appears to form near the case head, but that isn't always a good indicator. With the little hook attachment, you can "feel" the inside of the case for the thinning of the case head, and, if you want, you can move the micrometer dial to measure how bad the damage is. It's a nice feature.
If you're a tinkerer, and like knowing everything about your brass, it's a must.
I have a bushing neck sizing die, and I use this tool to measure the case neck thickness of brass to determine what bushing size I should use. This is actually a pretty handy feature that is more reliable that trying to measure with your standard vernier micrometer.
I also use this to measure how concentric my rounds are, both with the re-sizing of the brass itself and of the seated bullets. This can also be used on off-the-shelf ammo to help sort out the rounds that might be fliers.
Lastly, this tool has an attachment you can use to help feel and measure for incipient case head separation. I personally use this a lot since I reload for .303 British, which headspaces off of the rim of the cartridge and is notorious for chamber dimensions. I often have case head separations before I have split necks or loose primer pockets. Usually I have to pay attention for that light ring that appears to form near the case head, but that isn't always a good indicator. With the little hook attachment, you can "feel" the inside of the case for the thinning of the case head, and, if you want, you can move the micrometer dial to measure how bad the damage is. It's a nice feature.
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