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The L.E. Wilson 303 Savage Case Gage takes the guesswork out of loading for one of the old classic lever and bolt cartridges. It's a one-piece, non-adjustable steel gage that checks two things that matter most when you're sizing brass: the datum-to-head length that controls headspace, and the overall case length that tells you when it's time to trim. Drop a case in, read the step cuts, and you know exactly where you stand.
The business end of the gage has a machined step that represents the minimum and maximum headspace window. You drop a fired case in first, see how far it sits, then size it and drop it back in to confirm you've bumped the shoulder back the right amount instead of overworking the brass. Set the gage head-down on a flat surface and sight across the top and you get your min/max trim length too. One tool covers both jobs, which is why it's a staple on so many reloading benches.
L.E. Wilson has been a family-run shop since 1927, and they were the first to make a case gage back in 1935 after the founder set out to solve a case-separation problem. That history shows up in the fit and finish. These are precision-machined in the USA, and the 303 Savage version is a nice find considering not many companies bother supporting the older rimmed chamberings. Pair it with a caliper if you want exact numbers, or just use the step cuts for a quick pass/fail check.
Keep in mind this gage reads headspace and case length only. It isn't meant to measure body diameter, so it won't flag a bulged or oversized case wall. For setting up your sizing die and keeping your 303 Savage brass in spec round after round, it does exactly what it's built to do.
It checks two things: the datum-to-head length that determines headspace, and the overall case length so you know when to trim. Drop a fired case in to read your chamber's blowout point, then size and recheck to confirm your shoulder bump. It does not measure case body diameter, so it won't catch a bulged case wall.
Start with an as-fired case and drop it into the gage to see where the head sits against the step cuts. Size the case, drop it back in, and adjust your full length die until the shoulder is bumped back just enough, usually a few thousandths, without overworking the brass. Setting the shoulder just behind your chamber's headspace gives you better consistency and longer case life.
After sizing, set the gage on a flat surface with the case head facing down, then sight across the top using a ruler or straight edge. If the case mouth clips the straight edge at the max step, it's too long and needs trimming; if it falls between the min and max steps, you're in spec. Keep the case head and the end of the gage on the same flat surface for an accurate read.
No, this is a one-piece, non-adjustable gage machined to compare your brass against the minimum and maximum dimensions for 303 Savage. There are no parts to set or calibrate, which is part of what makes it so quick and repeatable to use at the bench.
| UPC | 857949005647 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CG-303S |
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