I had an awesome load for my 308 that was shooting Hornady 178gr A-max bullets. I loaded these to a 2.830 COAL (.032 jump) and they still fit in a magazine and this load would shoot about 1 inch at 300yds. Now heres my problem,.. I just shot the last of the A-max bullets I had. I ordered in over 600 of the 178gr HPBT Match bullets to replace them with and my load still shoots them good and the velocity barely changed but the bullet jump at mag length (2.830) is .084. with them and the group has opened up. Should I run them longer and single feed them? I also bet running them longer will require the load to be increased slightly. What do you think?