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Gunsmithing / Re: Measuring mainspring strength
« Last post by Navy Six on March 25, 2024, 01:31:18 PM »Well, just to satisfy myself that I wouldn't be wasting my time, this morning I did a brief preliminary test. A pair of Uberti mainsprings that came out of Cattleman(circa 1998 & 2000 and are definitely heavier than current production) were installed in my Uberti 51 Navy squarebacks. These two cap suck at the rate of 2/3 every 30 rounds or so despite everything done to them. After 60 total rounds I didn't have a single issue. No changes from usual other than the mainsprings. So I will hunt down more mainsprings of a similar weight as I intend to continue testing these two guns as well as a pair of 61 Navies and 60 Armies. I want to know about what weight mainspring is required to make these things work.