I have my new pistol broken in at 350 rounds functioning fine. Been shooting 180 grain stuff at 1050-1165 FPS. My cases are ejecting 12-15 feet and reliably. I want test some hunting ammo that I will shoot at a deer this Fall. It dawned on me the slide will likely move rearward faster. It will be more energetic than the 180-1165 stuff (542 ft-lbs) but not 750 ft-lbs. Probably no more than 650 ft-lbs. I am a little shy about some of the Buffalo Bore stuff just thinking it’s not necessary. But I wanted to try a spring that might work well with the range type ammo I am shooting and something a little hotter. I received the Wolff 23# sling made for the Colt Delta Elite today. It is about 3/16” shorter but the wire diameter is about 0.007”larger (0.051” vs 0.044”). The cross sectional area of that wire is 34% larger so I expected it to be stiffer. Installed, the spring is applying more force and seems like more than 1#. Mine factory is used of course at 350 rounds. Seems like a high quality spring. Can’t wait to try it out. If anyone has experience with this spring I would be interested in what you think. I called Dan Wesson and while they won’t recommend anything but the factory supplied 22# spring, they said it won’t void the warranty and should be fine. Seems like a harmless substitution to me but won’t know until I try it. All I know is that if these fairly weak loads are ejecting 12-15 feet, anything hotter might be hard on the pistol. Staying with the stock 18# hammer spring. Just a pound heavier on the recoil spring.