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If you reload .32-20 Winchester, this little steel gage earns its spot on the bench fast. L.E. Wilson built their first case gage back in 1935, and the design has stayed simple for a reason: it just works. Drop a case in, look at where the head sits against the step, and you've got a clear read on whether your brass is in spec or needs attention.
This is a one-piece gage that measures two things that matter most when you're loading .32-20 WCF: overall case length and headspace from the datum to the head. If a case sticks out past the max step, you know it's time to trim. The gage reads min and max headspace so you can confirm your sizing is landing where it should. Worth noting, it does not measure body diameter, so it's a go/no-go reference for length and shoulder bump rather than a full dimensional inspection.
The real value here is dialing in a full-length resizing die without overworking your brass. Oversizing is one of the most common reloading mistakes, and it's what leads to case head separation down the road. The smart move is to measure a case in as-fired condition, size it on your current die setting, then drop it back in the gage to see exactly how far you pushed the shoulder. Adjust the die from there and you're sizing just enough, not too much. A set of calipers paired with the gage lets you quantify headspace precisely.
Machined from polished steel with knurling in the center for grip, this gage is made in the USA by a family-owned shop that's been turning out precision reloading tools since 1927. The .32-20 version carries part number CG-3220 and runs right around 2.5 inches long, so it tucks away easily. For an old-school cartridge like the .32-20, having a dedicated gage takes a lot of the guesswork out of keeping your handloads consistent and your brass lasting through more firings.
It checks two things: overall case length so you know when to trim, and headspace from the datum to the case head so you can confirm your sizing is correct. It reads both minimum and maximum limits for each. Keep in mind it does not measure body diameter, so it's a length and shoulder-bump reference rather than a full dimensional check.
Start by measuring a case in as-fired condition and dropping it into the gage. Then resize it on your current die setting and place it back in to see how far you pushed the shoulder. Adjust the die from there so you're sizing just enough to chamber reliably without overworking the brass.
The gage gives you a quick visual go/no-go read on its own, which is plenty for many reloaders. Pairing it with a caliper lets you put actual numbers to your headspace and case length measurements for finer tuning. Most people find the combo gives the best repeatable results.
Yes, that's one of its main jobs. Oversizing brass is a common cause of case head separation, and this gage shows you exactly how much you're bumping the shoulder back so you can size the minimum amount needed. Less overworking means more firings out of each piece of brass.
| UPC | 857949005654 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CG-3220 |
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