Hey guys, I'm savin up for me a Viper PST for my Browning ABolt 270WSM. But pickin the scope seems to be the easy part. I'm lookin for the one piece picatinny base and good rings. I've found some bases but there aluminum. Are most of them OK or should I get steel? As for the rings Im likin what im hearin on the burris signature series rings (the ones with the inserts). What do yall suggest?? Also would I need a 20moa base to get out to a 1000yds?