I just use the recommended standard 16 lb. recoil spring. Brownells and Wolff both sell spring kits for your convenience.
Fiddling with spring weights beyond standard is a recipe for troubles in my view. I don't have troubles with any of my 1911-guns.
My Gold Cup came with two springs, 16 lb and 14 lb I believe. I've never had the 14 in the pistol because the 16 works fine for the 230's that I load. It's my understanding that the 14 would have to be used if I wanted to shoot 185's but all I ever load is 230's, the original bullet weight the pistol was designed for. I generally try to stay with the original design if I can. That includes using FMJ ball also. Never had any problems with any of my 1911's using 230, ever. I've tried the HiTek coated bullets and they work but going back to ball as they seem to take the taper crimp better and don't work themselves out in my revolver. I use the same ammo in my 625.
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