I'm just "wordier" than you are, Walkalong. (I wonder if that's a word?)
ny32182,
I haven't noticed any difference in bore deposits from shooting plated bullets. I use so many of them, I have a wholesale account with Berry's Manufacturing, who makes an excellent plated bullet. You can safely shoot them in your Glock, too.
As for 357 Sig, I use the Berry's 124 grain plated Flat Point, 124 grain plated Hollowpoint, and 115 grain plated Flat Point 9mm bullets for this caliber. If you'll stick with Accurate #9, they'll shoot just fine, but don't use Power Pistol near maximum loads with plated bullets or they'll tumble all over the place and hit the supports for your chronograph sky screens.............
For top velocity loads in 357 Sig, I use the Speer 124 grain bullet intended for 357 Sig. A good alternative is the Hornady 124 grain XTP bullet for loads at the top of the range.
Hope this helps.
Fred