Well, since my last post, this is what I discovered by trial and
success:
Using a RB1 receiver and everything else Remington rolling block rifle #1 #5 from the 1800's.
1. The RB1 receiver does bolt up to the Remington rolling block #1 trigger guard however you will need to tap the trigger guard to accept the RB1 screws for both rear mounting screws. Note: the trigger guard is really, really hardened so unless you have really top quality taps made in the USA you are
screwed.
2. The RB1 receiver and the trigger guard don't match up in the front so you need to remove 1/8" of material from the RB1 receiver. Note this will change the barrel setting so you will have to do some milling to the barrel for the ejector, and if you use a ejector from the 1800's, you will need to use the screw from the 1800's also, another tap you will need.
3. The trigger guard, aligns up with the hammer, so that is really good, however I did a trigger job using a welder, and re-hardening the trigger for better performance. Working slicker than snot.
4. Both of the 1800's hammer and trigger pins are larger and longer than the RB1 receiver, however I did adjust the pins and the receiver. The pins are really hard so having the proper tools makes the work much easier to accomplish. The pins are not standard size, so I used a expandable mill bit making a real tight fit.
5. I fitted the stock to the receiver and trigger guard, then I reinforced the stock inside between the receiver and trigger guard, and using boiled linseed oil I was able to seal everything up. In Alaska the weather will screw up wooden stocks if unprotected inside and outside.
6. The forearm was hand fitted also, using the barrel stud, and the receiver to keep it from moving welding the ram rod into place keeps the forearm secured into place.
7. The octagon barrel was fitted with a 6" Picatinny rail for the scope. This is a critical part of the scope, having a good secured base keeping the scope from any movement. Having a octagon barrel makes this easier, however I've used a blank picatinny rail doubling up on the mounting screws.
8. The sling was mounted with a barrel band, the forearm needs to be free from any obstacles.
9. The breach bolt was set with the barrel and headspace, a 45-70 finished reamer was used.
9. Everything was blued, nothing fancy just making it all uniformed, but I'd does look like awesome, like really slick.
Overall, as you can see from my list, it was a lot of work, and as you can see uncharted territory. That's why I was looking for someone else who worked on the RB1 receiver. It would have gone a whole lot easier if someone had the experience building the rolling block from scratch. This is the best of two decades, a new receiver, barrel and old parts that are made really tough.
Not to many people are up to a challenge of this large scale project, I enjoy difficult projects, the more difficult the more enjoyment I get of finding a solution. The rolling block is not a intricate rifle, not a difficult rifle, however when you build one from ground up it, with no information about the rifle, things can get interesting.
Building a rolling block 45-70 requires a lot of patience, a lot of time, making sure that the firearm is safe to shoot, and in the end a firearm that's 100% perfect and not something that bubba assembled.
