scenario. rem 700 pss in AICS. was wearing LEU 6.5 x 20 mildot in LEU med rings on TPS 20 moa base. shot like a house on fire. took that optic, ring,base set up and put on my 40x trainer. mounted NEW NIGHTFORCE 20 MOA base and med rings on PSS. put LEU 6.5 x 20 TMR in them. scope is proven. cant get it to zero at 100 yds. running out of down adjustment. i think the rings are med, but now im not sure. i am about crazy.