I'm new to rifles and scopes but have recently decided to try some long range shooting. I've decided on either the sps tactical in .308 or the model 10fcp also in .308. My question is is there enough elevation adjustment in the PST to get a .308 out to 1000 yards if I used a 20 MOA base? I don't plan on shooting 1000 yards from the start but want something I can grow into as my abilities improve. Any help would be great, thanks.