Reeder Custom Guns - Colt SAA throats. Are modern .357 throats

usually more uniform and acceptable in diameter than the .45's? The idea of a New Frontier just popped into my head.

a better man than me. I find it almost impossible to get consistent measurements to 0.001" or 0.0005" using calipers. The very best method to truly test is using "pin gauges". Try the gauges until you find a size that will not push through. It's the next smaller size. At best one can force soft lead slugs through the holes and then measure the slugs with calipers or micrometers. I've had some success with that, but you need to keep 6 holes, 6 lead slugs, separated and be very diligent.

Getting a real measurement can be a bit more difficult that one might initially think.

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