From what I hear, enjoy not much over 2000 rounds of extremely high accuracy, high power, super hard hitting(on both ends), heavy, long range, earsplitting, blinding, .30cal awesome. You'll likely have to set the barrel back or get a new one after those rounds, but the caliber doesn't do well with anything shorter than a 26" tube. It shines with a 30" tube, pushing those .30 Cal 250gr bullets over 3000ft/s. Again, from what I hear, recoil is hard, barrel life is short, and everything about anything related to what you're doing and what you bought screams expensive.
If you bought an accumark from impulse, that last part doesn't sound like it troubles you too much. Have fun sending heavy dangerous game bullets at velocities that makes varminters cry.