I have a Rem700 with a 27" #5 Krieger barrel. I have been playing with 225 Accubonds and getting ~1.5 moa groups with bullets seated to magazine length which is .104" off the lands. If I seat the bullets to .010 off the lands (3.760 col) then accuracy goes to ~.5moa. Question is, should I install a Wyatt extended magazine box to accomodate the longer COL or should I maybe have the barrel set back and rechambered with a shorter throat? Tried RL22, RL25, IMR 7828, and Magpro powder all with similar mediocre results at magazine length seating depth. Thanks!