I have a Remington 1902 rolling block converted to .44 Marlin. A sweet rifle to shoot! Just not real accurate as it has the 1 turn in 33 rifling. I often shoot up old 44-40 loads I find around the house from when I had a 44-40 rifle.
I recently got a #4 Rolling block. It’s chambered in .22 Short and is about 36” long overall. A tiny thing.