Thread:Defender7881/@comment-35115325-20190801022242/@comment-30076690-20190806010033

so, because I realized i hadn't looked at this stuff in a while, I actually read about it briefly

some spin can be beneficial to an APFSDS round in terms of accuracy, but the rate of spin from a rifled barrel is much too high and significantly decreases velocity on impact. As a result, smoothbores are preferred when firing APFSDS ammunition. The same is true of HEAT rounds, which also suffer in terms of penetrating power when rotating, though this can be compensated for by altering the shaped charge. HESH rounds purely benefit from rifling, and british tanks have their own kinetic penetrator similar to american APFSDS. However, they are basically limited to HESH and this penetrator, whereas smoothbore guns have a wide variety of munitions available.