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Posted: 10/13/2008 3:13:23 PM EDT
| I have 2 case guages for 223 and have a problem. One is a Lyman guage and the other a Wilson. About 25% of the cases I test with the Lyman guage are outside the tolerance. With the Wilson they are fine. Is the Lyman guage messed up or do they just have a tighter tolerance? Thanks! |
What spec do the 25% fail on. |
Do you mean the neck won't fit through the hole or do you mean that the shoulders won't go in? It would be interesting to see the caliper measurements of that part of the case that won't fit. You might have to give lyman a buzz and see what they have to say bout it. |
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IIRC, Wilson gauges are designed solely to measure overall length and datum point to base length. Other dimensions in the gauge are deliberately left large to avoid false headspace readings. I suspect the Lyman gauge is simply made with a chambering reamer. Thus all dimensions are tight. If I’m guessing correctly, the Wilson is best for setting headspace, while the Lyman is best to guarantee that completed rounds will chamber correctly. I do know that my Lyman .40 S&W gauge won’t accept lots of loaded rounds that fit perfectly in my pistols. I’ve gotten to the point where I generally don’t even bother with it. |
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