It's probably going to be hard to find a load that won't bulge the brass at all, it just happens as the brass expands due to the looser chamber in the Glock. I wouldn't be too concerned with it unless it's very obvious.
Accurate Arms shows 8.7gr of AA5 as a start charge for 140gr lead giving 1,190 fps. Unique should work too, but I don't have much data for lower end 10's myself. You might want to check the 10mm reloading section.
"There is a principle which is a bar against all information, which is a proof against all argument, and which cannot fail to keep a man in everlasting ignorance – that principle is condemnation before investigation."