MP 432-640 in 444 Marlin?

[farmbif]

Does anyone shoot this boolit in the 444? I've got a few 44 cal moulds but have been thinking of getting this MP mould for the triple 4. With the 1-38 twist barrel should I go for gas check version?

[missionary5155]

With the advent of plain base GCs it is whatever you like.
The 1-38 twist means velocity will be your friend if you have long range shooting with heavy cast in mind. Velocity means pressure.
At slow fps (pressure) you do not need a GC on either type base.
So with little information to go on get the GC mold and you have most the bases covered.
Mike in LLama Land