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the 10,75x63 comes frome the past, the 10,75x68 is something that goes the same way it seems

maybe its not the cartridge for elephant, buffalo, lion but up to medium range it work on smaller game.

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Velocity of the 10.75x68 seems to be approx 2200 to 2250 fps with a 347 gr bullet.

Velocity of the .450/400s with a 400 gr bullet is approx 2100 to 2150 fps. Calibre .407 to .411.

The old .404 Jeffery. .423, reported a 2170 fps velocity with a 400 gr projectile. Nowadays msybe 2200 to 2350 fps. The old and new .404 has a good reputation.

The 10.75x68, .423 calibre was reported as a failure on DG. Eg Harry Manners, Kambaku. Who switched to a .375. The principal claim to the failures was bullet construction.

Is the modern 350/347 gr Woodleigh Weldcores and FMJ better constructed? Almost certainly. Is 2200 to 2250 fps adequate? I would think so, but marginal decreases also exist.

Can a 400 gr .423 bullet be loaded in a 10.75x63 or x68? At what velocity? If 2100 fps or even 2150 fps? Zero practical difference to the old .404 Jeffery.

I will edit this post to discuss equivalent sectional densities.

Is the barrel twist rate the same?

All armchair stuff, given the lack of field users.

But I like it's lack of reputation ie the x68. Maybe get one nice M98 from Germany one day cheaper.

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John aka NitroX

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Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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