I was discussing with a friend today about options for a smoothbore .410 barrel for my Contender carbine and we arrived at the conclusion that making one would be easier than finding one(I've looked). Discussing options I thought I'd throw out there since you bunch of heathens are always figuring out how to do what shouldn't be done.
#1) Buy a 21" factory rifle barrel and ream it out to .410. But how do you ream 21"????
#2) Buy a used .410 single shot barrel and weld a T/C lug to it.
#3) Bite the bullet and hunt patiently for a factory smooth bore to come available and come up with the $5-600 they go for(OUCH)
Any ideals from the expert machinists here how to ream a barrel the whole way through fairly accurately? Anyone here have capability to do something like that?
Any ideals from the expert machinists here how to ream a barrel the whole way through fairly accurately? Anyone here have capability to do something like that?
expert? hah
I'd use a simple piloted d-bit reamer to finish it a couple thousandths under, then press a carbide ball bearing through it to burnish it smooth, it'll plastic foul like crazy if you just leave it as-reamed
ETA: much easier to weld a tc lug onto an existing 410 barrel (or possibly a piece of properly sized DOM. Barrels are soft steel)
My friend who is a much more accomplished machinist than I (and owns the lathe) was worried about the length of the reamer/extensions etc causing too much wobble. He mentioned a pull thru reamer but was clueless where one that length could be found. The barrel will be polished thoroughly to avoid plastic fouling! It looks like building a barrel is in the lead for easiest to do! Plus I already have a spare barrel that could contribute to the cause!
Watch your head spacing if you DIY...also better use chrome moly as using softer steel can lead to pressure issues if the wall is too thin at the breech.
It’s been a few years since I sold my TC stuff, but there used to be a couple of TC groups on Facebook where people sold barrels at reasonable prices. House of arms also ran specials from time to time. Personally, I had decent luck on eBay.
pull through would take chatter and shit out of the equation and be the better option as opposed to a boring bar
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