The following loads all worked well in government model pistols:
5.9 gr 231 powder under 200 gr. swc, hard cast, sized .452"
8.0 grains of Accurate 5, same bullets
5.2 grains Red Dot, same bullet chros just oiver 900f/sec.
OAL for the above is 1.260". 5.2 grains Red Dot is my favorite, however thare are many, many other loads. Always work up from below.
By the bye, the red dot and accurate 5 loads I mentioned work fine in a Colt series 70 pistol and in a Kimber Custom Classic Match.
Hope the above help.