Perhaps I shouldn't say boat-tailing as that's more severe than what I do.
I put my .40 cast rounds through a lee sizing die - but due to case variances, I still occasionally have narrower cases on the small side of tolerances that shave small bits of lead off unaltered rounds.
Now there's one way to handle this by using a flare die to further expand the shell.
and then there's another way - I use a large pencil sharpener and lightly roll the butt end of the cast round in it to put the smallest bevel / boat tail on the cast round which allows it to slip into cases without ever saving off any lead bits during reloading.
I put my .40 cast rounds through a lee sizing die - but due to case variances, I still occasionally have narrower cases on the small side of tolerances that shave small bits of lead off unaltered rounds.
Now there's one way to handle this by using a flare die to further expand the shell.
and then there's another way - I use a large pencil sharpener and lightly roll the butt end of the cast round in it to put the smallest bevel / boat tail on the cast round which allows it to slip into cases without ever saving off any lead bits during reloading.