plattincreek,
You are a 53 convert. The development of loads, reloading, experimenting with different bullets (after research) is half the fun. The other half is shooting this bad boy. It truly is the .22 MAGNUM. I was a bit surprised to read that guys are only shooting .22 LR out of theirs.
That is what the K22 Masterpiece is for. To each his own...not looking to pick any fights. I believe this extremely well built K frame will provide many years of service if the loads are kept within reason.
Somewhere on this forum is a great video of a young shooter with the 53 and .22 Jet loads. That's what it is all about.
There just is nothing like it...the bark...the flame...the accuracy...the speed.
Good luck with your 53 and ENJOY.
FWIW I use H4227 powder and .222 bullets