I adjusted the crimp on my Mec 600. Trial and error. Once adjusted your set for that brand of case. If you can adjust your final crimp die you won't need wads.
Still need wads, just no OSCIf you can adjust your final crimp die you won't need wads.
I have 4 Mec 600's in various gauges and still haven;t got the .410 one working properly.Irritating to load .410
Yes I was then tried some HS hulls then some Cheddite.........may soon be a boat anchor.............. NFG
Anyone using overshot cards when they are loading .410?
The Brits pioneered the folded crimp back in the '30's. They were looking for a solution to "cartwheel" or "donut" patterns, where there is shot concentration on the periphery, but none in the centre. What they found was that the overshot card was interfering with the shot column. The folded crimp was the solution. Using overshot cards would be a big step backward.
Still need wads, just no OSC
thegunnut, I agree with the other guys it is your crimp but one other thing I learned loading with Cheddite hulls is that I needed to reduce the shot drop by about 10 pellets less to just get a little more plastic to crimp with.
You don't really need wads.....



























