Lance,
Yes the barrel trimmer isn’t my favourite tool either.
I found this video last night, this looks useful.
[MEDIA=youtube]sg2YioBYYec[/MEDIA]
This is the link to the supplier.
https://www.arceurotrade.co.uk/Catalogue/Measurement/Punches-Scribes/Transfer-Punch-Sets
Not a huge outlay in the scheme of things. I may give it a go.
Colin.