Lupus
If the local range is IBS, then it is a good chance that they are shooting Score. Contact someone in that club, and find out.
The reason I say this is Benchrest is very specific. The trend in score shooting is slow twist 30 caliber chamberings that are deadly accurate, with the benefit of punching a larger hole in the target.
Don't invest all of your dollars in a 22 rig, or even a 6mm, for score shooting. You will be at a disadvantage.
If they shoot mostly group, then go with a 6PPC, as was said already, there are a multitude of good used rigs out there, sometimes you can pick up a shooters entire package for a fraction of what it would cost new.
Getting a Rifle built can be timely, there are a surprisingly few Benchrest Gunsmiths out there. That is why everybody is always "3 months behind".
New Rifles can be bought from big supply houses such as Bruno Shooting Supply. They build as certain amount of "spec" Rifles through the year for sale, they can be had emmediatly.
But as was said before, get to a match, and see how it is done. This is one case where a picture is worth a thousand words, things that seem foriegn now will suddenly become clear. That, and Benchrest Shooters are always ready to help a newshooter get started on the right track........jackie