I just ordered 2 boxes of 20/$19.99 from Cabela's of the Buffalo Bore 230 gr +P ammo. It is 230 gr FMJ FP at 950 fps. This will be used in a 5" 1911 (Milspec). It is stock except for an action job. Will the stock recoil spring be enough? This will be my SHTF ammo as I practice with 230 gr FMJ RN at 850 fps. Any suggestions, stronger spring, etc?