The Speer #4427 200gr GDJHP .429" bullet was made for low speed, ie, .44 Special snubby, opening. Actually, unlike that higher speed designed 200gr GDJHP in .45 Colt, the #4427 is claimed to open by 800fps. It is loaded in the CCI Blazer ammo - and GA Arms slightly higher new ammo; the former in Al, the latter in Starline brass. I have chrono-ed them at 805 fps from my S&W 296's 2.5" barrel, 835-840 fps from my 696's 3" barrel, and 870+fps from my 6.5" 24's. The 200gr GDJHP in .44 Spcl is my HD/PD round.
The .45 Colt Speer 200gr GDJHP, in GA Arms Starline brass, really is a lot faster, as it must be since it's GD is the high speed design. I have chrono-ed it from 1123 fps in my S&W 625MG's 4" barrel, 1210 fps from my 5.5" Redhawk, and 1424 fps from my 24" Puma M1892. It may very well be a decent deer round in the MG! For protection, I still prefer the 2.5" Ti 296. I have switched to the GA Arms rounds due to a split Al Blazer case earlier this year. Besides, you get more good .44 Special brass, a 'good thing', as Martha, who now resides in a 'gated community' would say.
Stainz