are you using a handheld drill or a drill press? I use a handheld and it is harder to get them to look as good. I just try to go slow and put a dab of wd40 on a q tip on end before crimping.
To be honest I started out on a drill press. It isn’t as slow as it needs to be, but I finished with a old school dewalt 18v drill and done a lot better with the drill…
Run the roll crimper on the shell lip for a few seconds right before you apply pressure. It heats up the hull and starts to melt it and gives a much more consistent roll crimp.
Run the roll crimper on the shell lip for a few seconds right before you apply pressure. It heats up the hull and starts to melt it and gives a much more consistent roll crimp.
I have 2 Sizemasters, one in 16 and one in 12, and I use the roll crimper more. I like being able to make the hull fit the load instead of the other way around. I do use the presses to resize and prime when I'm not loading new hulls.
If youre just concerned about the crimp then invest in a cheap Lee press and use it for the star crimp....I find my loads stay more consistent with the star crimp
A little 3-1 oil around the end of each shell with a q-tip helps a lot. I’d try the press again and take it slow. You don’t have to make the entire crimp at one time. Go a little ways then look at it. When I make ugly crimps, it’s because I pressed down too much or let it spin too long. Good luck!!