I'm planning to jug choke a single barrel auto loader that is currently true cylinder. I'd like to get about .08 of choke. I have the tooling and I've opened barrels in the past but never tried to jug choke. My plan is to open the barrel (plenty of wall thickness) about an inch below the end of the barrel using an adjustable reamer.
Before I embark on this, am I missing anything? Any pitfalls to be aware of?

Thanks very much,

GregMc