Congrats on sorting it out. I also use a vld deburring tool, however, after deburring, if I run my finger over the mouth of the case, they still feel sharp or rough.
I am again going to pass on a tip that I received some time ago which has yielded extremely good results and takes virtually no time at all. Steel wool 0000 or 00000 found at homedepot or lowes cheap, stuffed into a 15/32 or 1/2 socket. Chuck it up and hit your mouths for 5 or so seconds every time you trim... after you debur and chamfer. Huge difference.
Nope... The fireball has a 10" barrel. It's a 7mm br rechambered to 7mm ihmsa. Makes it just a bit smaller cartridge than a 308. Really like it so far. Br is on the right, ihmsa on the left.