I just got one of the Svarog .410 moulds last week. Casts a nice looking .408” slug (looks like a Diablo air rifle pellet). Works real lickety-split. Well made and fast casting is an understatement. I ordered it direct from Russia. Took a little getting familiar with navigating the ordering of it but once I got it ordered, took 3-weeks to get here. The slug fits right inside of a plastic .410 case. Fired some out of my old CVA Cheapo little twice barreled .410 muzzleloader. They were a thumb pressure only fit and hit nose first in one piece loaded directly over 30 gr. 2f. I’ll have to try some out of a .410 breech loader next. I didn’t have much in the way of high expectations since I cast them out of some wheel weight metal but they didn’t shatter on firing-just one clean hole. Anyhow, I had good success with that mould. Lots cheaper buying direct than by going thru flea bay too, even with shipping. I have a 20 gauge and a 12 coming!