Well a couple of weeks ago I got a 3'x3' piece of OSB, two t-posts and post pounder up to the top of the "hill" behind the cabin I've been staying at...it is 780 yards from the porch to the target....
From the target looking at the cabin...
First time I tried I made two hits out of 30...one with a 255 LBT=WFNGC and a home cast 245 grain RN...
255...
245...
The 245 went through the OSB and hit the right t-post and was found about 3' to the right of the target laying on top of the dirt...