re chamber lengths, by the thirties, 2 3/4" had become standard spec for most american made doubleguns...

chambers on many older guns have been lengthen, with some over lengthen...one never knows for sure, without measurement with a proper gauge...have used a galazan gauge for many years...

https://www.midwayusa.com/product/100706...-410-bore-brass




Last edited by ed good; 02/04/19 01:43 AM.

keep it simple and keep it safe...