Just finished making up my first lot of 35PB gaschecks using Pat's die & a couple of Yonky's .550x006 aluminum coils, there was no trimming or filing on the die as many mentioned.
He has quite a fast delivery service, even down here to Oz.
Everything just worked first up, pretty slick stuff, much easier than chopping up my alu/cans, not as colourful though I guess.
Everything looks so purdy its a shame I have to go & ruin it all at the range.