When I shot training wheels years ago I shot the Crimson Talons. I thought they were a fine head but certainly they perform best at 280 fps or above. Company president Scott Mackie is about as fine a man as you'll come across, a real gentleman.
That said I personally feel the Crimson Talon is best used on deer sized or smaller game, as the ferrule is not overly strong. The design was well thought out but the materials used are just not strong enough for traditional archery. Think of a Muzzy w/ a twist. Aluminum ferrules just don't have the durability to plow through heavy bone at low speed w/ a heavy arrow.
Honestly though, I don't believe Crimson Talons were built to accomodate Traditional archery. They are best suited with Training Wheels.