444 Ballard Rifling

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444 Ballard Rifling

Post by mtngun » Thu Dec 27, 2012 7:53 pm

The 444 SAAMI chamber, as used by Marlin, has a very short throat, and some 44 magnum bullets with full diameter front bands may not chamber.

Here's a couple of suggested nose designs. They will result in an overall cartridge length of 2.565" if your cases are 2.55" long.

A bore rider. The ideal diameter of the bore riding section is debateable and will in any event depend on as-cast tolerances.

A reduced diameter nose.