I'll try and explain, awshucks.

The instructions with the scope say to get on paper at 10, sight in at 20, check other ranges (rechecked at 10 and then hit 30) then set your compensator ring to your estimated speed and then dial in the comp ring at 50, so that's what I did.

I had already preset the ring midway between 250 and 275 fps. Based on my estimated arrow weight (some day, I gotta finally break down and buy a grain scale) and the arrow weight/speed table in the manual, I figured that would be slightly on the slow side. So, I shot for the center of a Morrell Outdoor Range bag at 50 yards and watched through the scope as I missed the whole darn thing low. Never did find that arrow. I was absolutely shocked because I'd actually expected POI to be a bit high. Even cranked all the way down to 250, POI was just barely on the bottom of the target butt.

I have a couple of things I need to check out. Either I've got to be way off on my estimated arrow weight or the arrow weight/speed tables in Excalibur's manual aren't very accurate. According to the manual, the Vixen should be putting out 261 fps even with 2219's, and I can't imagine the Cabela's X-Bolt carbons are THAT heavy.

Still, if I'd not skipped taking a shot at the 40 yarder, I'd probably still have 6 arrows instead of 5.

I won't go over 30 on a deer but, like you say, there are times to stretch it out a bit. I'll be looking at going somewhat lighter with the next arrows I buy.