I have a 99F in 250-3000 I bought from a guy in Maine about 10 years ago. It is a cool little round. No deer I've shot with it has gone more than 40 yards. I shoot the Rem 100 gr PTSP and it's been very accurate.
It does put a little bigger hole in animals than a 243 or 6mm and can shoot a heavier bullet to mention a couple of pluses. Always wanted to try some 117 gr RN Hornadys in it but haven't felt the need.