Rather than hijack oldtimer303's thread re: a .250 barrel for a M1920, I thought it better to throw this out on a new thread.

Since the 1920 barrel threads are the same as 1899/99 "square" threads, what's to stop a guy from building a swap barrel system on the bolt gun using the takedown system used for the lever guns? Hand thread a different barrel on (interrupted threads or not) to where two notches line up (at the same point the barrel draws up tight), and have a permanent steel key set in the stock that meshes into said notches to hold everything in battery. One fly I see in the ointment would be the extractor cuts in the 99 barrels, but possibly the only thing needed would be re-cutting of same.

It wouldn't necessarily make for an easily dismounted gun for ease of transport, but it would allow a fellow to have multiple calibers on the same frame, and could be done on the cheap (relatively speaking) by using cast off 99 barrels. Obviously, in order to retain magazine feeding and extraction with the original extractor, one would have to stick with .250 and .300's (or their respective wildcats), but one could also shoot things like .30-30, .303, .22HP by going single shot and sticking a modified extractor on the bolt, and would open up the possibility of adding .35 Remington and .243/7-08/.308 (if they're not too hot for the old girl). Shoot all the calibers you can dream of off of one platform.

Last edited by gnoahhh; 08/16/14.

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