Glad that I re-visited the gunsmith threads and saw the responses to my question regarding a longer barrel on a Marlin 1895 45-70 Classic. And bearhunter noted that in the project he did with the 26 inch barrel swap, there was a gain of 60fps, Rifle was more muzzle heavy, offhand groups improved, and the finished result resembled a Winchester Model 64... Also I'm taller than DancesWithEmptyCasings. I've added a slip on recoil pad to get some extra LOP on the 1895 Classic. I like the Marlin 1895 because it can be scoped, but the main competitor from Winchester, the model 1886 was produced in various barrel lengths up to 26 inches, but is not scoped.
Whether it's scoped or not, a lever type of rifle in 45-70 with a 26" barrel provides a few outcomes that I favor. The intention is not to tote a rifle like this on long walks in the bush, but have something that can show some potential and gains - where possible. And, I'll mount a simple scope on it and likely sit by a swamp and wait for the big guy to come into reasonable range. Also, the pistol grip style is preferred over the straight stock versions.
Personally I'm not interested in a "guide-gun" version as I have experienced the sound of the muzzle blast from one of these short barrelled rifles. And I'm not fond of it. I like the Cowboy for the longer 26" barrel it offers - but I'm not in need of the long magazine tube found on the Cowboy. And when offered, the Marlin 1895 XLR in 45-70 was closer in design and features then the Classic is. I didn't notice them when they were in production and probably really would have obtained one - when they were more available. So this is one of the reasons I have considered a re-barrel on the 1895 Classic at 22" to a 26" barrel. And if Marlin re-issues the 1895 XLR with the 24 inch barrel or better yet if Marlin added another 2" (26") to the 1895 XLR that would be ideal. For now I'll have to think about costs associated with the re-barrel of the 22" Classic to a 26" barrel.