A check through Nick Harveys book lists the following:

235gr bullet: Min Max
AR2208 72gr(2620fps) 75gr(2745fps)
AR2209 80gr(2590fps) 82gr(2716fps)

300gr Bullet:
AR2208 66gr(2490fps) 71gr(2560fps)
AR2209 73gr(2420fps) 77gr(2545fps)

Don't know about about the trigger, timney should have one.

opps had to edit the 350gr to 300gr