Both the 87 and 100-grain Speer Hot-Cor spitzers are "designed" as deer bullets--the 87 especially for the 1-14 twist .250s. Other manufacturers have produced 85-87 grain bullets designed for varmints in larger, faster .25s.
Even the 100-grain Speer Hot-Cor will stabilize in many 1-14 250s, since it's about the shortest 100-grain lead-core spitzer available. I've used it in more than one here in Montana, where the elevation is generally high enough to allow it to stabilize. On the other hand, some older 99s don't always have 1-14 twists. I had a take-down that would NOT shoot the 100-grain Speers, and finally measured the twist--which turned out to be 1-15. That sort of thing wasn't uncommon when many were rifled with adjustable sine-bar machinery--but it shot the 87 Speer just fine.
