As I have come to understand, the feature prevents loss of gas between the chamber and barrel, and also allows the nagant to be suppressed. These both seem to be good things in my opinion, hence the question.
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because its not needed, and we dont design revolvers anymore.
Yes, revolvers do loose some energy from the cylinder gap, in practical terms its not a huge amount, and the extra complexity of the workaround used by the Nagant, like the cylinder pushing forward and the extra long cartridge case, is normally unneeded. it can’t be done with any of the existing cartridges on the market as it requires the long brass casings of 7.62 nagant to work, which means any revolver intended for a “standard” type cartridge is never going to make the system work.
also, the Nagant M1895 is right at the back end of common revolver design, as its contempary with the early semi-automatic pistols like the C93, the mauser C96, and theLuger was first produced in 1898. The militaries started to move over to semi-autos, and civilians generally were happy with the existing revolver paradigm, so their was no incentive to shift en masse to the nagant system.
also, while suppressors are cool, and did exist in experimental form in the early 20th century, its only in the post ww2 era that they became something that worked well and for more than a half-dozen shots. they’ve always had a bit of a “spy gadget” vibe that means it was never a priority in weapon design until well into the latter 20th century when revolvers were civilian and backup weapons.
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