Quote Originally Posted by TheBelly View Post
I loaded up 50 more rounds of .260 Remington. Now that I've FINALLY found a load that the gun likes at 100, it's time to see what it'll do at 200-500. It's fun to make targets for that range. I've never shot at paper that far away, only at steel. It'll probably be a very fun-to-shoot-yet-frustrating-to-see event.
Not to complicate things, but are you using a chrono? I've often found the load that gives you the best 100 and 200 yard groups doesn't necessarily have the best extreme spread or tightest standard deviation numbers. When that's the case, the pretty groups at 100 yards turn into a lot of vertical spread at longer distances. If the intent is a long range load, I'll take more consistent speeds every time.

Sorry if this is remedial, I don't know how much you've done this. Take good notes and go have a blast.