>>64093665
Discarding sabot, yes. Imagine being able to get something like .270 Remington ballistics out of an unmodified .30-06 Sprg rifle, using a lighter and smaller projectile in the same kind of case and powder load.
Didn't work out that great, as they would not work well in all rifles. Generally attributed to the twist rates or/and styles of rifling in many guns being unsuitable for the projectile weights and lengths.
For some people it actually worked like it should, and some thought it was great, but it wasn't a big market hit.
Antigunners absolutely shat their pants at it, like they shat ALL the pants they had, and even shat future pants they hadn't bought yet nor which had yet to be sown.
Their takeaway was that there would be no rifling marks on the bullets to match to the gun, so these sabots were totally gonna be the ultimate assassin's bullet which would let anyone get away with any murder they wanted.
In practice, this never actually happened, and that's a pretty retarded interpretation, but they did make histrionic noise about it.
They had a similar reaction to a briefly available commercial caseless rifle cartridge (using a rifle or pistol powered by a battery), which ended up being used only by very few hunters and some bench shooters, before vanishing from the market.
