Here's a scenario for the spring gurus:
The pistol is a Springfield Armory Mil-Spec in .45 ACP. Aside from a fitted barrel and bushing, Bomar sights, and a trigger job, it is completely stock -- no comps, guide rods, et cetera.
The ammunition used is factory-loaded 230 grain FMJ, round nose, with a muzzle velocity of 810-860 feet per second.
Assuming that fast cycling time isn't a goal but managable recoil and muzzle flip are:
1) What is the best recoil spring weight for this pistol?
2) What is the best mainspring weight for this pistol?
3) Would the use of a Shok-Buff be helpful?