RE: KRB7 Range Report
WOW!!! those Great Plains look like they have some real accuracy to them. Even the powerbelts did not do all that bad if you take into consideration the age of the rifle, the temperature, the fact you were not even planning them, and guessed at the load. On the powerbelts you might want to drop the powder charge and see what happens, but that rifle looks like a real shooter to me... nice shooting there.
What sight picture were you holding? Most of them rifles come pre-aimed for 100 yards (I think) so I am kind of surprised that it shot as low as it did...