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A #1 BP receiver is .920" minimum and .975" maximum 12 square threads per inch. 1.418" long shank.
The #1 smokeless action is 1.0" min. x 1.055" max. with a 12 tpi 1.430" long shank.
The Swedish and Danish can be the same as the BP action also, especially those made by Remington. Not sure if later ...

Not sure what you mean for certain? But as far as caliber choices any #1 that's in a black powder caliber is appropriate for another #1. But not all barrel threads are the same throughout all #1 production, so if you find another barrel it may or may not be the same thread diameter. And of course i ...

I have a friend who has an account with I believe Ancestry.com, and does checks through that account. He tells me that it often brings up info that we can't find in a Google search.

I wonder if W E Rolfe was a company sponsoring a match, or donating the rifle to a match winner? It wouldn't be unusual to not have the winner's name on the plaque since they wouldn't know who would win the rifle?
Might check for companies that existed in the area back then, and see if the name ...

Amazing detective work oldremguy! And a great history of the group and that era of long range shooting! I love firearms, and shooting history as much as the guns.

Beautiful Creedmoor rifle! The holy grail of Remington Rolling Blocks for me! I wanted one for a very long time, and finally built one from an original Remington action and a new Green Mountain barrel, and Remington stocks leftover from their run in the late 1990's. Likely the only thing close ...

I don't believe any Long Range Creedmoor Rolling Blocks were even offered or built prior to 1874? Roy Marcot's book tells us the first were offered in 1874, and chambered in the .44-77 Rem-Sharps bottleneck.

I have two with single set triggers, and neither is a two piece trigger guard. One around serial #1700, and the other around #1400.

Those sights with modifications for windage would likely indicate the gun's use as a match rifle for military longrange matches. Of course the windage screw adjustment would be much more precise as you get out farther, but either type would not be used for the average soldier. They're specialty ...

I think you might see the difference in that GB rifle's stock fit and the case colors on the receiver also. Not sure the .444 Marlin caliber might not add to the value or not? Some love the caliber, while others would prefer the .45-70.

The mistake in the Bluebook of Gun Values might be based on the difference between #5 military rifles and #5 Sporting Rifles. The #5 in a Sporting Rifle is very rare, but military versions are plentiful.}
Yours is a military that someone reworked into a Sporting Rifle. Possibly Numrich, since they ...

Wow! I've never seen a rifle barrel marked Smith & Wesson! I own a dozen Rolling Block Sporting Rifles, but none as late as yours. I think my highest serial number is in the 7,000 range. So none have the hump back receiver yours exhibits either.
As a S&W fan too, I'd be in heaven finding an old ...

So many of these military Rolling Blocks were arsenal reworks, so it's not unusual for an armorer in the arsenal to swap parts as they reassembled them. They sure weren't concerned about collectible values when they were doing the work back then.

Been many, many years since any of the large base ...

Don't recall the topic of #1 1/2 Rolling Blocks coming up, but I am a fan of the model! Wish I had more myself, but they don't show up for sale often, and when they do they're usually .38 Long RF or .32 Long RF. I have one in .22 RF and one in .32-20 WCF.

Good pic . thanks.

I wonder if its because those cases are a big diameter, hence the concave BB.
Milling a slot in the barrel for a sliding extractor might weaken it by getting to close to the wall.
The case head is close to the concave so makes the stud extractor easy to fit.
As cases got ...