Hello Guys

I'm looking at chambering a rebarrel in 300 Savage. This case has a very short neck, and since I will be forming brass anyway, I want to make the chamber so it will take a longer than SAMMI neck - by about 0.100 to 0.150 (before you ask, the mag box will not take a 308 Win)

Would I need a custom 300 Savage reamer for this, or could the chamber be cut with a standard 300 reamer, and the neck extension finished with another reamer or tool?

Thanks

Reamer makers can make you a neck reamer, a throating reamer, a neck and throat reamer and all kinds of chamber reamers, Call them and tell them what it is you want

4-D will rent you one for 26.00

They waive the deposit if you use a credit card.

http://4-dproducts.com/display...wid=357&tname=rental

As I'm down in NZ our options are a bit limited, I was wondering if there was another way besides a purpose made reamer (like say using a reamer from another .30 cal chamber, like 30-30 -0 obviously it would have to be "slimmer" in the body area than a 300 Savage)

Tentman

I like all your rifles and you your ideas.... except this one.

Why would you mess with the 300 savage. The short neck won't hurt a thing.

No it probably doesn't need messing with . . . but if I set the whole thing up to use really good brass wouldn't that be a good idea . . . like just running 260 Creedmore brass through a neck expander then a F/L die ??

Make a chamber cast as a guide for dimensions. Learn to make half reamers to cut the length and then a factory throating reamer to lengthen the throat. I would make the reamer to bottom out on the chamber shoulder by rounding the cutting edge so it will not cut. I have made special reamers for similar jobs. Make a try chamber cut in an old piece of 30 cal. barrel and make a casting to see if it has the dimensions you wanted. You will need to know the thickness of the new neck area on the brass which you will make the new cases. A couple of thousands clearance so pressure is not too high with the new case.

A half reamer will cut slow, but it is good for experimental projects. I have lots of special necksizer reloading dies which were made this way.

quote:

Originally posted by Tentman:
As I'm down in NZ our options are a bit limited, I was wondering if there was another way besides a purpose made reamer (like say using a reamer from another .30 cal chamber, like 30-30 -0 obviously it would have to be "slimmer" in the body area than a 300 Savage)

Other options would be a small boring bar like those made by Circle Machine, or, a take a standard 3/8 in chucking reamer to one of your tool sharpening shops and have them grind it to .339 or whatever size you need. Assuming everything is dialed in and running true in the lathe, the chucking reamer should theoretically follow the original hole.

Thank you for your most helpful suggestions gentlemen, one of these we will be able to do, and a trial run is always the way to go !!