Marlin 1895 SS Micro-Groove barrel 45-70

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Marlin 1895 SS Micro-Groove barrel 45-70

Post by colt45long » Wed Jul 01, 2015 8:35 am

I would like to try cast bullets in this gun I am new to casting accept for my muzzle loader. Never dealt with rifle cartridge casting. 1895 SS Micro-Groove barrel 1992 vintage 45-70 this is NOT Ballard rifling. I just got this gun and have not fired it yet. I slugged it and got .459-.460" max readings. All the molds available are under sized for this given bore this should be .461-.462 cast not .457, .458 or .459 I hear there are concerns with throat size and chambering larger cast bullets. If this is an issue I my opt out of going this route and only shoot plated bullets. Is there a mold that will work looking for a 405 grain and possibly 300-325 grain ? would like to have the option of a GC.
I here if using GC no leading issues but what good is it to cast and shoot under sized bullets.

I hear that the Micro-groove Marlins shoot cast very nicely given this I would think the supplies would be more common. Maybe I am looking in the wrong places.

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Re: Marlin 1895 SS Micro-Groove barrel 45-70

Post by mtngun » Wed Jul 01, 2015 8:52 am

One suggestion. Tweak the diameters to suit your gun.

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