I have a Martini carbine supposedly in 303. It keyholed horribly and I am trying to find out if it is 303 or some other weird Brit caliber. Also, the regular Martini bayonet does not fit; any ideas? The carbine is marked Enfield 1923 and appears to be a legit rework, n ot Khyber Pass.

I bought a 303 because a relative collected a VC a long time ago. Unfortunately, posthumously because the 450 ammo boxes were screwed down and they could't feed them fast enough.
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