Good Morning All, I am a new member to this forum but not new to hand-gunning. This year, I have taken 3 pigs 80-300 lbs with my 10mm, Glock20 G4. What I have really struggled to understand is specifically, Hard Cast and how it interacts with Glocks.

There is lots of information on the web, much of it conflicting. so here is the question.. Please respond with Evidence Based Information not just opinions.

What is the algorithm for shooting cast from a Glock20?
ie.
Buffalo Bore 220- need aftermarket barrel(ie. KKM), need heavy recoil spring (<22lb recoil spring)
Underwood...
Double tap...

The idea is how to effectively use hard cast through a Glock with no or minimal modification, maintain safety and ensure proper function of the firearm. I would be using Hard cast specifically for defense against Hogs/ Coyotes/ Black Bears

Thank you