I completely agree about the SD/ES. those are 2 areas I originally was giving little attention but now play a very key role in my load development. In regards to jump, i would have never believed that a .10 change in jump could impact accuracy the way it does. I can attest with a couple of the loads (specifically the ABLR 142) it can be night and day. I have already messed with jump a bit and found my sweet spot with the 142's is an OAL of 3.180-3.190. With the 129's it doesn't seem to matter as much as they perform similarly from 3.165-3.185. The VLD 140s in my rifle want as small a jump as possible (unfortunately my throat is too long to get close to the lands) .
