I'm about to order some more .45 gc's. Gator checks have a better price point than Hornady but are advertised as 'gilding metal copper'. Gilding metal has a fair amount of tin in it and is 'hard' in my experience...at least harder than pure copper. Question, does anyone on here anneal Gator checks? Is it recommended? Do Gator checks stay on well? Hornadys have a little 'grip ridge' that bites the shank of the bullet. I have NO experience with Gator checks but willing to try them.