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Discussion Starter #1
Heavier 230-grain bullet for .44-40, loosely based on RCBS 44-200CM "Cowboy" bullet, with dimensions optimized for modern guns using smokeless powder. Also highly suitable for .44 Russian, .44 Special and .44 Magnum. Available from Accurate NOW. When ordering you can "tweak" dimensions for your gun and alloy. Can be ordered with plain base if you object to the bevel base.

43-229H-D.png

Nose lengthened to fit Colt SA and New Service cylinders and also to feed in 1894 Marlin, 1892 Winchester and Spanish El Tigre.

Nose diameter above crimp groove enlarged to fit cylinder throats to improve guidance. Smaller nose diameter of RCBS bullet intended to provide chamber clearance for black powder fouling is not needed for smokeless, and improved throat fit improves accuracy.

Lube groove reduced for smokeless powder, but still holds plenty of lube.

Base band height increased to strengthen base for heavier rifle loads.

Slight 0.03 bevel base eases loading, and reduces "finning" of base when throat-diameter bullet is extruded into tighter bore.
Reduces "cupping" of base in full-charge 1892 Winchester loads.


.33 length from base to crimp groove fits the .44-40 neck, with only the bevel of the base below the neck-shoulder junction.

230 grain weight improves penetration for hunting purposes, but is still stable in slow rifle twist. Longest and heaviest bullet useable in .44-40 which does not reduce available powder capacity at factory OAL.
 

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Discussion Starter #4
Outpost,

What do you think would need to be done to turn this into a 300gr for a Marlin 444?
In the .444 using wheelweights, maintaining the same head length and nose shape, to get about 300 grains lengthen the bullet by 0.17" to 0.82" overall.

I would make the lube groove .05 wider to increase lube capacity, increase the base band width by 0.03 and add a .09" gascheck heel, if you wanted that, if not add to the base band and make either a plain-base or slight .03 bevel, whatever is your preference. Tom could do that.
 
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