It does. Min is about there too.

Mike:

Mine has the same twist but dislike 440grain.

My 52 grain load with Norma powder and 370grain has been chronographed in a HH .500 to 495 m/sec(1624 ft/sec). My 51 grain load however is the best.
I wonder if my rifle regulates with a 370grain SWC style bullet @ 1600 ft/sec, wich is very sweet to shoot with is that gun ever could regulate with load going any faster?.

The SWC style bullet I use now ofcouse has different flightcharacteristics than a traditional roundnose has and maybe my 340 HPs can be driven up to a regulating speed of 1800 ft/sec?...or in reality the velocities given in the books of the 1890s were really not the correct velocities?....It won’t be long before I have some 340grain HPs casted and the target will tell the truth.