44-40 Bolt Gun

you are going to like that Manson reamer ... i think they are the best choice right now.

******

if the budget allows i use the roller piloted reamers and fitted buttons.  

***************

to get the most out of the solid guide reamers here is what i do.>> ( with tapered cases ) ...

in the 4 jaw, i sweep the THROAT area to zero.  if a long rifle cartridge takes a long needle indicator or drill clearance for the indicator body.  i don't believe the Gritters rods etc. are as good as sweeping the throat itself.  because only the throat matters.  if any error, your chamber will be less than1 thou oversize at the base ... better there than up front.

then i drill out as much of the barrel case area as safe, just to reduce chips.

then i BORE within 0.010 or so of the finished diameter at the same TAPER as the reamer/case .   this gives you a tapered guide for the body of the reamer ... since your finished reamer solid guide can't be sure to guide the reamer body ... usually.  boring makes the taper concentric with the throat.  a good start.

use a floating reamer holder to allow the reamer to follow the taper easily.  if you don't have a fancy one, you can just push the reamer with a flat hard slick pusher ... such as a stock stop in the tail stock.

shut off phone, lock the doors and take your time.  don't chip-fill the reamer flutes over half full and clean everything between every cut.  pray on the last fine cut or two.

once i tried the above about 20 years ago, i also use this even with roller piloted reamers.  saves buying rougher reamers.

of course the pucker time is when you chamber a lead slug in your finished job and see if the rifling is even.  so far so good, even with " e-bay " deer rifle reamers.

let us know how your project turns out.

ken