I fell for this too when I first started ML hunting. I got the optima pro and it said to shoot PBs so I did. I switched to Hornady wasn't happy, so I switched to TC Shock waves (the bonded ones). Haven't had an issue yet and get good groups.
I now shoot the CVA Acura. My old Optima Pro weighed about 8-10 lbs. it was like carrying an anchor into the woods..