So I was thinking of using my 6.5 Grendel AR to hunt with this year. And maybe this post belongs in rifles or reloading. Anyway I shot three shot groups with three different bullets. One of which was Barnes 100 grain ttsx. I had never used that bullet before. I was really impressed with the group. Less than an inch and it was blustery where I was yesterday. It shot the best group between it, 120 grain ballistic tip, and 123 grain SST. The thing is the group was a full six inches higher than the other two bullets. I really didn't want to fiddle with my scope that much this close to Deer season. However it's not the firearms deer season yet! What I'm wondering is, is the 100 grain ttsx a good bullet for deer in the 6.5 Grendel? It seems a little light compared to the 120 and 123. And yes I know lot of deer are killed with 100 grain bullets from a 243. I can still change my mind and sight in the rifle for that round if it seems to be a deer killer or not. Wondering what are others opinions?