Just the other day I was shooting tiny groups with 40, 55, and 65 grainers in my 223 and was happy as a clam. Yesterday I did a little shooting with the 65 gr GK's and groups were not exactly what I had seen before. So today I grabbed the 55 gr Noslers, because I know for a fact that they shoot great groups. Well, groups were spread out and random. One left, one low, one high, etc. The only time I ever saw this sort of thing was when a scope died. I had an extra, a VariX-III in 4.5-14 that was recently 'freshened' by Leupold. I put that on there and got small groups. I've heard folks badmouth the VX2 6-18, but I just ignored them. And here it is my turn to fuss. I'll send it off to Leupold next week and ask them to check it out and give me a new reticle (if they'll do that for a VX2).
I guess I can no longer say that I've never had a Leupold fail me.
On the good side, that old VariX-III is bright and clear. It'll do just fine, and I might not put the 6-18 back on it after being fixed.