i am just starting to load a freind has a chrono so last night we shot winchester white box 115g fmj speed average was 1110 then we loaded 124g rn from bullet works with 4.0 tite group it shot 990 oal was 1.14 i backed load down to 3.7 now my question is the 115g rn bullet is .060 shorter than the 125 rn question is can i load the 115g at 3.5 or 3.7 and pull the oal down to 1.10