Not seeing any "F-Class" on the ORA calendar. Must be popular if isn't advertised and you're discouraging potential new shoot like the OP from showing up with what they may have.
F-Class is all over the ORA calendar and it is very popular, you better have another look. Anyone who is interested should contact the ORA here
http://www.ontariorifleassociation.ca/contact
I'm just saying that a guy with a 20 inch barrel on a 308 would have some real large kohoenies to show up at the 1000 yard line actually expecting to hold his ground. Its just not realistic.
Lets just do a little math here regarding barrel length and velocity. Off the top of my head I'm guessing that you get roughly 30 feet per second per inch of barrel length. If you don't believe 30 fps, then google it.
When you put a guy with a 20 inch barrel next to a 30 inch barrel - the guy with the 30 inch barrel is spitting lead at about 300 feet per second faster than the 20 inch guy. That's about 10 percent speed advantage!
Come on now guys, do you really thing that's going to be a fair match or a butt whoopin?
Anyone can get off a lucky shot once in a while and pick off a clay pigeon at 1400 yards with a pot shot after ??? trys, but in F-Class all shots count, you cant take a mulligan if you don't like the shot, the guy scoring you will not give you a pass when you say you pulled that flyer. When the shooting stops its the guy with the most in the middle who wins. To be competitive in this game you need all the help you can get.
When you think about aggregate scoring, a guy can do fairly well at short range and may even win the odd event but the sum of all distances is where the over all winner is determined. If you fall back at long range, you fall back in the aggregate. You need a rifle with enough velocity to hold it's own at the back that shoots bug holes at 300 yards.
A guy can also strategize to excel at short range just to win a short range event and that is what a short fat barrel might do for you, but know going in that you will fall back in the pack when you move back - unless you switch to a second longer barreled rifle for long range.
Remember the V-Bull at 300 yards is only about the size of a bottle cap. To win the 300 yard event you need to hit that bottle cap with at least 8 out of 10 shots and you gotta do it while alternating shots with 2 other guys that might not shoot very fast.
Don't kid yourself, there is no shortage of well funded talent out there and you gotta be ready to bring out your "A" game if you want to win it.
I will add one more point. Remember, even the last place shooter is welcome to come back and try again next time. A guy learns something each time he comes out. You set your own level and you are not required to shoot better than anyone else to attend. Shoot what you have and have a good time doing it. If you want to shoot better, you have to give something up to get it including time with your family, the cost of equipment, shooting supplies and travel. It's not cheap.