Many people are having trouble running more that 5 rounds in a mag using the big 145 Grain cast bullet. This is one of those cheap no-name mags with the orange follower.
I hand a failure to feed on the second round (the bolt locked back for some reason) and a real failure to feed on the last round. The last round really supprised me because this load has been very consistant when I was testing with just 3 rounds in the mag.
Any how, here is the vid, some rounds I shot into the dirt just in front of the backstop.