Did Marlin ever have a twist rate other than 1:38" in .44 mag in an 1894 rifle?
I think it depends upon which model 1894 you have.
Marlin Model 1894 - Wikipedia, the free encyclopedia
shows the 1894S to have 1:20 twist, where the 1894 & 1894SS have the 1:38 twist.
The Marlin web site still lists 1:38 for the 1894 .44 magnum rifles.
Marlin Model 1894
I'm just not interested in arguing with 1 sentence rob, which ought to be his new nick.[/QUOTE
I'm not arguing at all. Until you prove the twist rate in your particular rifle,you can't be sure,and shouldn't assume anything just 'cause you read it on the internet. Since the math confuses you,let's reduce this to a word problem.
You're assuming a 1 in 20" twist,and you've got a 20 inch barrel. The bullet should make one complete revolution in its journey out to the muzzle after it leaves the chamber. Put the cleaning rod with the snug patch in the chamber. Put a piece of tape back by the handle and mark it lengthwise at the top(12 0'clock). Put the muzzle against the wall and push the patch through. When the patch reaches the muzzle and stops at the wall,20 inches of travel,the mark will be back at 12 o'clock with a 1 in 20" twist. A 1 in 38" twist(darn near twice as slow), the mark will be down by 6 o'clock.
Test your rifles and you'll know for sure. Please keep us informed as to the results.
Rob
The bore diameter on Marlin 44 magnum carbines is PER SAAMI SPEC and therefore I have no idea why you are insisting it be tighter. SAAMI specs also call for a 1:38 twist rate.If Remington Today would make there Marlin .44 Mag Rifles with a 1 X 20 twist and tighten up the bore size and also have good production Quality going out the door I would seriously look into the purchase of one.