Just a question? I was wanting to know if you could/can rechamber a .357 mag rifle to 350 Remington mag? It's a NEF Handi rifle just wanting to know.

H&R NEF doesn't mfg any rifles or barrels chambered for cartridge with the H&H magnum head size which suggests the action may not be strong enough for that much back thrust. The good news is the 358 Winchester and the 35 Whelen are based on the same 308 and 30'06 cases for which it is offered.

Since the 35 Whelen is a ballistic twin to the 350RM, it would make a much better conversion and was factory available from H&R... twice! A short action chambering is a moot point in a break-barrel, so the mag has no advantage as it would in a bolt gun. The only issue will be the slower 1:18¾" twist rate, but with the lighter bullets, it should be fine. I've shot 240-250gr cast bullets in my 35 Rem Handi which was a 357Mag/Max.

Cool, I did not think about the 35 Whelen or the 358 Winchester. Thanks for that idea. Does anyone make custom barrels for the Handi rifle?

Unfortunately no, Marts Custom used to, but they went out of business a few years ago. There are a few gunsmiths that will stub a barrel using a donor barrel and a blank, or just weld a donor underlug to a barrel blank, I'm having the latter done with a Shilen 6.5mm blank for a 6.5x55.

I had my 357 mag barrel rechambered to 358 Bullberry by OTT and it turned out to be very accurate and one of my favorite deer and hog guns. The 35 BB is the 30-30 case necked up to 35 or the 375 Win case necked down to 35 cal. I have shot pistol bullets from 125 grain to 180 grain and rifle bullets from 180 grain to 225 grain and it shoots all of them well with the 18 twist barrel. The 200 grain Hornady RN is a real thumper at 2100fps. I have a barrel in 357 max and it is not as accuraate as the Rechambered Bullberry and when funds are availiable it will be rechambered by OTT to 358 Winchester.

shortgun

Check out David White's site. www.dandtcustomgunworks.com

There are a couple of places that bore and cut rile to whatever you want.25-06 to 35 would be a good choice. Both 26"bbl

One option is the .35 Remington.
Another option is a .35 Remington with a rim.
You can use .303 or .30-40 Krag brass and the appropriate shell holder with .35 Reminton dies. It just takes a rim recess cut in the re-chambered barrel. It also can be cut to just fit you brass and maintain better head space control.
If you can find the dies you can also re-chamber to .35 Winchester.
Another one is to use a .444 Marlin case with cut off .35 Whelen dies

.356 Winchester and .358 Bellm are other considerations.

That way you can have a rim for better (in theory) extraction.

In a 2003 issue of Rifle magazine, a number of shops were listed as doing reboring work: Dan Pederson in Prescott, AZ; Cliff LaBountry in Maple Falls, WA; Randall Redman in Omak, WA; Al Siegrist in Whittemore, MI; Randy Selby in Cody, WY; and Wayne York in Aurora, OR.

Not all barrel steels take well to reboring; you'll have to ask.

Pederson lists $220 to rebore and $295 with rechambering. I don't know if he does break-open rifles.

Wayne York moved to Pendleton a couple years ago, he does excellent work, his 6 groove cut rifling is the best, I've had two H&R rifles rebored by him, and a couple rechambered as well, he's also doing the work on the 6.5x55 Ultra.

http://home.earthlink.net/~oregunsmithing/index.html