Getting the throat on my #1 Ruger in 45/70 reamed out

FrankCVA42

Active Member
My Ruger #1 has the rifling start just about where the chamber ends. And in reading this is how the #1's in 45/70 are from the factory. I have seriously considered either doing myself or have it sent out to get the throat reamed to be able to get a proper throat and be able to seat cast bullets further out in the case. Has any one else get this done and did it perform to your expectations?. And any suggested gunsmiths who specialize in Rugers?. Frank
 

CZ93X62

Official forum enigma
My Ruger #1 in 45/70--and every other 45/70 throat I have ever owned (Marlin 1895s) has very similar throat forms to Frank's #1. IOW, almost zero "throat" followed by a leade angle like a concrete curb edge, practically perpendicular. A lot of bullet designs (like Lyman's and RCBS' 45 rifle patterns) accommodate that form to some extent. Others (like Lee)......not so much. A lot of lever rifle/black powder era calibers have throat forms like this, and many of their most popular bullet designs cater to those forms--tangent ogives with shorter radii. I have never actually re-cut a rifle throat to fit bullets, though I have considered doing so more than once. I just choose a bullet design/seating depth combination that kisses the leade with the bullet ogive and call it "good".
 
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fiver

Well-Known Member
the SAAMI throats are just as you describe.
there's basically nothing there.

anyway,, cutting the throat is just paying attention to detail.
you just turn the reamer clean the chips oil it good cut a touch more,, repeat.
 

CWLONGSHOT

Well-Known Member
I have a couple that I would really like to ream.
I have done a 38/55 and a 45/70 myself. It is very easy and hand tools, some oil and patience is all that’s needed.

Good luck
CW
 

JWFilips

Well-Known Member
I Recut the throat on my 340 Savage 30-30 and now it is a real cast bullet shooter! I believe the reamer I used was a finish reamer. If you ask around a few places about renting one you may be lucky like I was: I got a loan of the reamer....... I just had to pay shipping both ways! Good deal.
Really isn't hard to do you just have to turn slowly and clean the chips from it every turn or so
 

CWLONGSHOT

Well-Known Member
4D readers is who I have used a few times. Easy transaction fair prices and quick service.

But I think you only have a short time with the Reamer. He wants it back quickly so have your ducks in a row when ya order.
 

RBHarter

West Central AR
7 days from receipt to return post mark they will give you a few days for mail service , and a weekend usually without any hassles , also wiggle room for holidays . The written rules are much more rigid .
 

Charles Graff

Moderator Emeritus
In days gone by Ruger SSs came with a long throat/freebore. This is because a falling block action has no caming power like a bolt action. I had a #1 30-06 and still have a #3 in 45-70 like this I just seat the bullet down until the block will just kiss the case head on it's way up. Works to perfection. The current Ruger falling blocks must be different.
 

FrankCVA42

Active Member
Many thanks for the responses. Even with the bulk buy Remington 300 JHP's seating it out is not an option. Barely just past the cannelure on the bullet. And I'd have to check them out, but my Winchesters and Marlins suffer from the same problem. No real leade or throat. Accurate has a couple 30 cal molds that have a sort of bigger diameter just where the body of the bullet is to snug up against the short for want of a better term,throat. 170 and 180 or there abouts cast bullet weights. I was cautioned about having some wear on the throat to avoid jamming the bullet into the rifling. i have a 20" octagon barreled Winchester Canadian Centennial that I know has more than a few rounds down the tube. But it's 26" big brother is basically new in the box and has no wear in the same area. Was going to start shooting it,but with all the local rages closed that may be something done at a future time. Will check out 4D 's website for a throating reamer. Thanks again,stay safe. Frank