LEE
Now this is just my opinion so fel free to put your own in here , but just for fun I will give those interested a few minimum for a few bullets.
XTP 230gr- 1400fps
XTP 240gr- 1500fps
XTP 250gr- 1500fps
I gotta tell right off the top I have never thought about the low end of the spectrum - because I, asan X centerfire shooter, am always trying to achieve max velocity & energy with max accuracy... but with in thatstatementin mind also remember I am not hung up on shooting tight groups on paper. I am, although, really hung up on one shot (the first) going where my POI is+/- 3"@ a100, and it really nice when all shots do that - I think I have achieved that will all my ML's and certainly my CF's.
For shooting minimum velocities I guess I would refer back to manufacturers guidelines... although when you do this you might find that you are shooting aparticular bullet well beyond it's listed capabilties for the gun that it designed to be shot in.... case in point a 200 grain XTP - performs at velociies well beyond what Hornady listed max...