Some advice for new competitors, which I wish I knew before my first shoot. This should probably be a sticky.
For the walk back/sight in - it is HIGHLY recommended that you and your team member have hand-held radios for communication. When you do the walk back, your team member will be manning your target in the butts. You're going to want/need direct communication with them so they can tell you clear adjustments to make. At 600 yards you're going to need it and you won't have an opportunity to see your target until you're done. There is zero cell phone reception at this range. You will need to tell your team member if you need an indicator or if you want him to change it or anything else. An inch can mean the difference of being in the winners circle. The radio is a must, including an extra set of batteries.
If you want to be competitive during the shoot, a spotting scope is a must - as well as the experience and knowhow to call corrections to your team member. At the Vancouver Island shoot, illae lent us his extra spotting scope and it was invaluable. I owe my win at that match to him for lending the spotting scope and my team mate for being able to give me clear corrections, especially on the 500m line. Spotting your team mates hits with a rifle scope is iffy at best. You'll need a spotting scope directly behind the shooter to effectively see trace and make corrections.
For those that have never been to a military range before expect to see different safety protocols and standard procedures. Ask lots of questions, sometimes thing feel informal because of the assumption that everyone has been to a military range before.
The course of fire can and does change during a match. Pay attention. More importantly, don't get flustered and in a rush if you're not sure what's going on. More often than not you're going to be waitingso there is plenty of opportunity to ask questions from the match director or other competitors.
Pee early and pee often. I'm looking at you shoot/no shoot agony stage!