Bed the rifle properly. Put on a MOA base either from Farrel or other quality maker. Burris rings w/inserts for additional shimming and tuning. I use their tallest rings. Lighten the trigger as much as possible. Make up handloads that shooting 1/2 min or under in round groups or sideways footballs (wide but short).
Put on a Harris, or Skipod and come on out. A good solid rear bag is a must - protecktor is most readily available. Make sure that the optics and stock height are comfy for your body while prone. I found that the cheek rest had to be raised quite a bit for me to be comfy. Length of pull was actually shorter. Change anything to make it fit - duct tape and foam rubber if necessary. You will be shooting very long relays and having sore necks doesn't help with scores.
F class was a very easy event for me to figure out my first time out. You have so much time during the relay and every shot is scored so you know what just happened and learn from it. With a drop chart and hopefully a day to sight in, you just dial up and start shooting. Look at the conditions and learn how to dope the winds.
Look over the conditions/flags, take your best guess on what the winds are doing, aim, fire, get scored, diagnose why what you thought would happen didn't, reaim and start the process over again. With an accurate/consistent rifle (1/2min) in light air, you may just pick off a few X's.
That will be too bad cause now your HOOKED
It really doesn't have to be complicated. Just get out there and have fun.
I like mil dot reticles for holding off (not a scope clicker for windage). I use Elite 4200 6x24 AO mil dot scopes. They work, great glass, well priced.
A great scope if your matches only cover a moderate distances like 300 to 600, or 800 to 1000yds. You can set up the scope to cover that range. However, not ideal if you have to go from 300 to 1000 in the same match.
Testing their new Tactical (much more elevation and suitable for one scope set up for all normal distances) and will eventually get their 6500 30X. If budget is a concern, the 4200 is a great bargain.
Jerry