I was introduced to F Class Open a while ago. Most guys use a 7mm/284win with 180gr Berger`s VLD to 1000yrds at 2870 fps. After reading about Kirby Allens 7mm Allen Magnum with 200gr ULD RBBT bullets with a .900 bc, I`m ready to try them out. Does any one have any experience regarding this bullets? How will perform in a 7WSM? Not particularly fond of velocity over 3000 fps. With a bigger heavier bullet in the 7mm WSM, I think it would give ulitmate performance. With a 200gr bullet the 7mm/284 Win might become to slow for the 1000 yrds.(?) The 7mm WSM is to fast with a 180 gr Berger (for me) and barrel life expectation not too long. However, that said, with a 200 gr bullet it might be just under 3000 fps with great ballistics. Would like the pro`s comments on this.