This might be an old story, but I was thinking about trying some barnes varmint grenades in my .223 Handi. Has anyone used these before, and how well do they work? My handi is one of the older ones with 1:12 rifling, which brings about another question. I had a look at the 50gr VG's, and I noticed that they are pretty long for a lighter bullet. Does this mean they handle more like the long 68 or 75 grainers, or do they still handle like a normal sized 50 grain bullets? I did see that they recommend 1:9 or faster twist rifling for these. Is this related to accuracy, terminal performance, or both? I've been using, and had most luck with, 45gr sierra varminters, but ive had some time lately and I thought I might start trying some other options to see what my handi can do.