Went out to the range today to watch a 500 yard match and to finally get out to shoot at 500 yards (after the match). Aside from one other practice day at 500 yards, I have not shot beyond 100 at targets before and 200 at gongs and been wanting to shoot at 500 for a while now. It's only open at that range for a dozen or less times a year. It's amazing how much I learned in just one outing and I'm hooked. I haven't fully developed my loads yet as I'm quite light on powder charge but I knew they would work ok. I did better than I thought, both with the hand load consistency and experience at that yardage. I haven't shot prone before so that took some getting used to.
A few weeks ago I used a Labradar to chrono my rounds and was pretty happy that my cheapo Caldwell was pretty close to the Labradar. Between 2 10 round group averages there was an 8 fps difference between the Labradar and my chrony.
I'm not sure what most folks use but I was at full power on my scope (16x) and had a hard time with my vision at 500. I have a Vortex HS-T so maybe I need better glasses-or scope

My eyes get blurry after 20-25 rounds. Sucks. Anyone have advice on that?
Anyways here are a few of my best groups. Had a few outside of MOA but not too bad. I won't post those

I was shooting a Ruger RPR 6.5 CM 140gr Hornady ELD-M 39gr of H4350 at about 2510fps at the muzzle. This load shot real well at 100 but I think I can up it to 41-42 grains with success.