I’ve got a Sig Tango 4 6x24 on a 16in Ar-15 and I need a better base as I’m shooting out to 1000.The base I have has got me bottoming out on elevation so I cannot get the potential out of this particular glass. I’m having to hold over 700-1000 (1000 is really pushing this rifle but it’s possible) I see more 20moa cantilever bases than 30moa. My question is would 20 moa be enough for that range or would I need a 30moa.