Actually, today we use faster-twist barrels BECAUSE we make better bullets.
None of the early bullets were as well-balanced as they are today, though some weren't bad. But most of the short, high-velocity spitzers for military rounds were used for barrages at longer ranges, whether with machine guns or mass fire from infantry rifles. Some dispersion wasn't a disadvantage.
But many of the faster-twist rifles sold today wouldn't sell if we also didn't have short, light, well-balanced spritzers in every caliber. Many people also want to shoot 40-grain bullets in their AR-15.
