??? Rolling Block just about done

ww270win

ww270win

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Hi Girls and Guys.

My plan is to build a 45-70 rifle with this action.

That’s what I have so far.

The serial number is 64948. No other markings anywhere on the receiver.

It has the safety hammer, which I only could find on Husqvarna built shot guns, online.

It was Probably a 12 gauge shot gun, according to the wear mark on the breech block. I’m not certain, because I have no barrel.


If someone would have some more historical info on that action.

Is that action suitable to be made into a 45-70? Being originally a shotgun? That’s my assumption. (The steel is hard as hell. I tried to file on the underside of the top tang it hardly scratched it.)

I will be using it with black powder, but may try some smokeless as well, up to trapdoor pressure levels. Unless someone with more knowledge tells me otherwise, off course.


Any insight is appreciated.
Thanks Guys!
WW




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The action is probably case hardened which means that it is only the surface which is hard. I would think the action is strong enough for 45-70 and black powder. I think what you do have to check is that the thread diameter is compatible with the barrel you intend to use. By that I mean that it is small enough that you can thread the barrel you intend to use, to fit the gun

cheers mooncoon
 
The firing pin is big. It's .113 “ dia
I’m going to machine a pocket, fill it with a tool steel plug, and drill it out from the back.
Then I’m going to make a new firing pin.
 
Have you seen DeHaas' instructions showing how to modify RRBs to reduce firing pin diameter? That is basically the process he recommends. He set the block up in the 4 jaw chuck, nicely centered, then bored a recess in the block face for the plug. It is well supported from behind.
I have a No. 1 1/2 RB in .32RF with a seriously pooched bore. Pitting, 2 bulges. I've considered sleeving it, and converting it to center fire.
 
Thanks tiriaq,
I found a scan of the book online. Very interesting read.
I will machine the breech block in the milling machine.

Thanks sail32. I found that link in my initial research.

WW
 
I have a very similar action with a 12ga barrel and stock attached. Does yours have the dual extractors? Looks like it might but can't see for sure. Thought that was a neat feature.

It's looks and feels like a very well made action. Never figured out exactly what date it would have been manufactured.
I can't see why it wouldn't make a very fine 45-70 but would certainly stick to black powder pressures.
Keep us posted on the project. I have an action that needs building too one of these days.
 
I have one of these shotgun actions. Green Mountain barrel, chambered in 38-55. Buck & I did a full rebuild on it last winter. It also had a LARGE firing pin. The rebuild involved making new action pins, a new button, new extractor, honing the action/breechblock/hammer in unison on a Sunnen machine, setting the barrel back and re-chambering. I'm very happy with the results.

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Restocked by Sandy Post.
 
oldrodder said:
I have one of these shotgun actions. Green Mountain barrel, chambered in 38-55. Buck & I did a full rebuild on it last winter. It also had a LARGE firing pin. The rebuild involved making new action pins, a new button, new extractor, honing the action/breechblock/hammer in unison on a Sunnen machine, setting the barrel back and re-chambering. I'm very happy with the results.

7HEuBtyl.jpg


Restocked by Sandy Post.
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Your gun looks nice. Did you leave the large firing pin?
I left mine. For now. Most of the time with Dominion large rifle primers, I have the to pull the trigger twice.
The odd one goes off at the first pull. For shooting offhand, it makes for a good training, to control the trigger. Regular brand primers go off every time.
 
ww270win said:
Your gun looks nice. Did you leave the large firing pin?
I left mine. For now. Most of the time with Dominion large rifle primers, I have the to pull the trigger twice.
The odd one goes off at the first pull. For shooting offhand, it makes for a good training, to control the trigger. Regular brand primers go off every time.
Click to expand...

No, we did not! It was very wobbly in the hammer. We bushed the hammer, re-drilled it and made a new firing pin. It fires very reliably!
For your firing issues, I'm sure you looked at the spring?
 
45/70 is a great cartridge, i have had many over the years. What is the intended purpose ?
if is just a plinker i would recommend a lesser straight walled cartridge.
38/55 is perfect if you pick the right rate of twist.
40/65, 40/60 Maynard, 40/50 SS
less powder, same fun , less recoil
after a three day silhouette match 45/70 gets to you.
 
Originally I was thinking on the 40-65. But I had all the components and reloading gear for 45-70.
That's why I went with it. My ultimate goal is to go do the Quigley shoot.
Maybe a bpr silhouette match.
Regards recoil, I'm running 420 grain bullets at 1250 ft/sec. with 24 grains of Dominion 5744. Eventually I'm going to try black powder.
So far I'm quite comfortable with the recoil. My gun weighs in at 10lbs. 3 ounces.
Now, if I shoot similar loads out of my Marlin cb, that's a different story. There I can feel my shoulder after 10 shots.
 
playing with the long range stuff like 500yds requires the heavy stuff. 520 to 530gr 20/1 alloy ...after your second relay on the second day of shooting you will be thinking wow I wished this rifle had a 20 lb barrel. I have shot most makes and designs and stocks play a big part....original Hepburns in #3 they bite...martinis not to fun. pistol grip rollers and highwalls good...... buttplates of the shotgun style are way better.

oldrodders rolling block in 38/55 with the right bullet will do everything , the barrel on his rifle looks chunky .. good weight, straight stock with a shotgun butt ..pleasure to shoot I bet ...I would be guessing that he has done a piano wire spring for trigger and is playing with a heavy bullet. with very good results.

Not a lot of meat supporting the block pin on the shotgun action comparison to a #1 Roller Military config any markings on the pins ? and the action thickness is thinner where the barrel shank screws in.
 
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