Mine like the 65gr. Vmax's with a nearly max load of IMR 4064. I've found that the brass weight plays a big part of the accuracy in my 243 barrel. I sort them out to weigh exactly the same,after trimming to the same length. If I'm very carefull with the loading and shooting,I can get 1/4" groups. Neck sizing does'nt work on mine(it don't lock up the same everytime). You can check the lockup just by looking at the release lever and make sure it returns all the way,and if it does,its going to shoot alot better. At 300 yds. the 65 gr. Vmax's make some of the most spectacular kills I've ever seen. Digger