Re: sierra bullets
The bullets they originally marketed as LR specialty bullets were originally those that required non-standard twists, such as the .224" 80 grain MK, the 6mm 107 and so on. Marketing them directly gave them a chance to talk to the customer and ensure they had a rifle that was correct for using them. Easier to do it that way, than to try to explain to the guy whose 22-250 with the 1x14" twist is spraying 80 grain bullets all over the paper after he's bought a box of 500. It was a decent idea but it may have expanded to include some that don't need such cautions these days. Anyway, that was the original though behind "specialty" bullets.