The TAC load I mentioned above gave me 2870 from a 20" bbl, but I get about the same groups at 3210'/s (MVP 24"bbls), 3350'/s (Shilen 26" bbls) and in .22-250 from 24" bbls @ 3850'/s.
It's the bullet!!
Lest there be any confusion, all these rifles wear 20 to 24 power scopes and Timney triggers.
My partner gets 3250/'s and 3350'/s from 20" and 24"bbls, respectively, using Benchmark and shoots the same groups with this bullet.
We buy them thousands at a time for prairie dogs.