I just wasn't sure the .50-.59 would too big and cause issues. Thanks
Too big is OK, as long as you think about what your doing.
All ya need is enough to go around the ball, right?, the only problem with too much is the possibility of the starter or rod end getting jammed up with the extra fabric,, it can actually bunch up when removing
said starter or rod and lift the patch back out a bit as you raise the rod.
The simple fix;
Seat the ball, (don't drive it), lift the starter and gather the extra fabric above the ball,, and then push the whole thing down.
It's a technique used when cutting at the muzzle like @NorthFork
said. Cause you don't really cut "at" the muzzle,, but a little above it,, the blade doesn't touch the barrel.
I've seen top shooters cut way over the muzzle, 3/8" or better!