I posted this elsewhere, but thought some folks here might be interested as well.

I've been working on some projects to increase the striking power without generating crazy pressures and have developed what I think is a good solution.

Working with Manson Reamers I've finalized and submitted my specs to them for a set a reamers and gauges for what I'm calling 450/110 MAX (for now).

Basic specs are (can't give them all out yet) 2.44" .458 cal rimmed with a water capacity of 100 to 103.2 grns. This is designed to keep pressures around 47kpsi and
deliver a 420 grain bullet at 2150 to 2250+ fps from a Win 1886. Might be able to get more but I'll have to wait for the testing phase.

Photo for comparison. The below is one of my dummy rounds for fit and function testing. Just waiting for the reamer and a set of custom dies to come in.

Left to right: 450AK,(Harold Johnson Version) 450/110 2.4" JES MAX

577Nitro-

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