45.5 gr of RL-15 under a 120gr NBT for 3000FPS
I took a short bike ride today, looking for bears.
Around 11:30 it was getting pretty warm and I decided to take a break and do some shooting.
I set a 6" rock at the base of a stump. 550 yards.
The wind was blowing strait from behind me about 10 mph so I didn't need a wind dope.
No problem hitting the rock every time, the only problem I had was I only brought 8 rounds with me so when they were gone it was time to ride back out.

Heres a pic of the set up.

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The cut I was shooting across.
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I bought this rifle as a lightweight for pack-in deer hunts but its so nice to carry and fun to shoot, it sees a lot of use.