I did the 500 yard thing...got some useful data to 500 for my 6.5 x 284 load. I used computer generated data for the shoot and will adjust (fine tune) off that. They're all fine kill shots...some will argue that I'd have missed a head shot at 400 and 500 (there's always one that's gotta have something to bitch about).
Didn't have time to shoot any more...took my 243 but brought it back un-fired. Too many honey-do items at home to stay away too long (and I want next weekend off).
I'll score and link the target(s) tomorrow.
Hell... changed my mind.
These were shot after being stapled to a 4'x8' ft piece of plywood. The load was 140 Hornady A-Max and 51 grain of H4831, new un-fired Lapua brass.
I didn't have any data for this rifle or load and elected to use the 300 Win Mag 190 Sierra Gold Medal Match come-ups (computer generated @ 2900fps BC .525)... I did this mainly to show that 500 yard shooting is really an easy affair even with "nearly accurate" data. (I know the 6.5 x 284 is about the same in trajectory as the 190 GMM 300 Win...that's one reason I shoot it.) I had a young fella with me...he helped out and ranged the target(s) as we moved downrange... we couldn't get a 300 yard shot and shot from a berm at 325 yards plus or minus a few (I used the 300 yard come-ups anyway). There was a bit of wind... I used .5 MOA Left every once in a while... for 400 and 500 yards there was a double wind, left from about 200 to the target and right from me to about 300 yards...there was a tree line between 300 and 200 and this caused the double wind...there was also a rise/ridge there and at 400 and 500 I shot through a significant mirage (I was shooting very close to the top of the intermediate rise/ridge).
The black circles on this targets are about 1 MOA for the range shot... 3 inches at 300 yards, 5 inches a 500 yards. (other than 300 yards)... no shots were more than 1 MOA from the intended Point of Impact (POI) and all groups were at or under 1 MOA in size. There were no sighters and no re-tries...all shots were fired from "MY" field (hunting) position (bipod and sand sock). The numbers indicating LOW/HIGH LEFT/RIGHT are calculated from the measured center of the three (3) shot group. (No animals were injured in the creation of this data...some fossil fuel was burned, lead an copper were released into the environment. Several insects were smashed beyond recognition and one horse fly was knocked about a bit.)
Here's the targets.
Here's an old picture of the range area...I'm in the impact area in this photo. That tower in the background is just over 650 yards away... the little brown target in the left center of the picture is just about 200 yards away (it's 48 inches tall and 23 inches wide). The little white speck just to the right and up from the 200 yard distant target is 325 yards away...the tree just behind and left of the white speck is right at 500 yards back.
[ 08-25-2003: Message edited by: Dave King ]