I've shot 230 and 250 grain Berry's bullets (they don't lead the bore like lead bullets do) and while I've gotten decent results, I get the feeling 200 grains would shoot better. Maybe the .410 handguns like the shorter bearing surface of a lighter bullet or the twist rate is just right. IDK what the twist rate is for the .410 handguns, but I assume they used as slow a twist as possible to keep the shot loads from spinning too fast.Mine runes 200 grain cowboy loads like a champ.
This load in particular must really grab the rifling, as it will place rounds ON TOP of each other at ten yards.
It does not like hornady for some reason (45 colt, not triple defense).
I don't think seating the bullets further out is going to make enough of a difference to increase the potential for the reduced neck tension and bullets jumping crimp under recoil. We're still talking a jump of at least an inch.Here's an article about loading the 45 Colt 'long' to cut down on bullet jump in a Taurus Public Defender. I shot it out to 25 and the results weren't bad. I'd expect better from the S&W Governor, which is doubtless better fitted and more accurate to begin with.
For informational purposes only and do not recommend you use my load data or alter your firearm.
https://www.thesixgunjournal.net/the-taurus-public-defender-45-colt410-snubnose-revolver/