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.32 WSp is a bit "over the top" in a Martini Cadet, as the Length of a Loaded .32 Spec. can make it difficult to load, and also difficult to extract (The extractor teeth have to be widened to accommodate the larger case and rim.)

Has the Groove in the Block been deepened? (Milled or Ground out) to give more clearance for the Larger Cartridge? Here in Australia, all sorts of "Conversions" of the Cadet have been tried, usually changing the odd calibre barrel to a new one ( although .32/20 WCF will fire reasonably well in a Cadet once rechambered for the Longer shell, with thicker rim.). Attempts to change to the 30/30 type case (even the smaller calibres, such as 25/35 etc,) have Mechanical difficulties.

The Higher Pressures in these cases will also lead to Receiver Wall stretching, and increased Head space. Has the Firing Pin Hole been "Bushed" and recut?.

Commonest conversions are (were) .222Rim, .32/20, .25/20. .218 Bee, .22 Hornet and improveds, .357 Magnum. And some ".310 Wildcats" ( .357/310 etc.); .316 Jacketed bullets were available here (Super and Rivberbrand) up to 40 years ago.

Back in WW II, the Cadet was considered useful enough to have .310 FMJ ammo made for it, in case of Japanese Invasion (for VDF)... in the actuality, they were never called on for an active Combat role.

Light loads only, cast bullets.

Doc AV
 

· Administrator
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Cast Bullet Engineering (CBE) of Newcastle ( Aust) makes Proper .316 Mould blocks for the Cadet cartridge, both the Heeled Version ( original Lead Bullet) and a spitzer cast version ( not heeled).
They do Email sales...

Doc AV
 
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