A friend of mine has a 250-3000 Savage Model 99 and he can't get it to shoot well. Turns out his bullets are tumbling (Nosler BTs). He called Nosler and they said he's SOL. I looked in my manual and they say, point blank:

Many older Model 99s have 1-14" twist rates and will not stabilize any of our .25 caliber bullets.

What kind and weight bullets will stabilize in his M99? thanks.