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Originally Posted by fernando
Besides, if actual rifling would have its grooves carved so deep, the barrel wall thickness would become critical.
Am i correct ?
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There are lots of military guns - not rifles - with a rather thin wall thickness. These have mostly been fusilier-guns which could be loaded either quickly with a simple roll bullet or if there was a liitle more time with a plaster(?) bullet which has been more precise. As the wall thickness of the barrels normaly increases from the muzzle to the end there never have been problems because of the powder pressure especially since this pressure decreases on its way to the muzzle.
Rifling onlyt at the muzzle is mostly to be found at pistols with unscrewable barrels to put in a fitting key in order to turn off the barrel. At a pistol with a fixed barrel such grooves make no sense at all.
corrado26