Welcome to GT and welcome to the G20 club!
I have always run a 22# spring when shooting my heavy loads and after 100's of them, I see no reason not too. Light range or comp loads do not require the extra spring weight, so I have a couple of stock spring assemblies around for that. I have close to 10,000 rounds through mine and all I have ever changed is springs. Every other parts seems to work fine even after years of abuse.
"The sword that cuts down evil is the sword that gives life"
*10 Ring, MBR and Reloading Clubs: #436*