Originally Posted by Any Cal.
I still haven't seen anything other than speculation that the factory spring isn't adequate. It would be interesting to find real life data on what the spring absorbs and what levels of energy are detrimental to the frame. All the speculation on distance brass is thrown have nothing to do with the construction of the gun or its lifespan. In fact, I haven't seen evidence of issues caused by the use of the factory spring either, which is odd if it really is a problem. PistolPete is thousands of rounds into the factory RSA w/ no issues, which suggests that the factory weight is fine.
What is telling to me is my G20sf exhibits some failure to extract malfunctions with Hornady 180 grain and the OEM spring. When I drop in the 20 pound spring the malfunctions stop. I know it may be my particular gun but it makes me wonder.