Thought I'd try this as I've not done a poll before and I noticed someone else is asking the same questions I'm thinking. My Challenge is totally standard and I really wanted to keep it that way, but I've seen my shots going high in this heat this season (first FT one with the Challenge but I've used 4 scopes this season) which I thought could be attributable to a few things as I'm not the only one who has experienced this and their rifles have floated barrels (and not Steyr either). Now I thought I could learn this movement and effectively dial it out but the weirdest thing happened to me on Sunday. I had done some testing earlier in the week and checked zero for 45yds which was all but on. The temp then was around 20C. On Sunday it wasn't much higher so at best I was expecting to maybe give a couple of clicks for a high shot but my first two shots went low. I didn't see the first shot tbh as the target was shot up (35yds) but the second was at 45yds and I saw the low hit clear as day. Although I was amazed it went low I went bold and gave it 10 clicks (1/8 moa on a Leupold Comp). From then on I hit the targets stand fast a couple for wind. So, I'm seeing POI although I'd definitely like to do more testing now I've got my Leupold back. Might be useful to add how much testing you've done and what you shoot HFT FT because I don't notice it when shooting at x9 HFT but have at x40 with the comp. Must add it's early days with the comp.