L
Lightvarmint
Guest
Hello,
We finally got some range time to test the 265s.
Before I go any further, I want to apologize to Kirby because I gave him a hard time about shooting drops for BC with the Aluminum tipped high speed and low drag bullet profiles..... Kirby I apologize. After conferring with Dr Ken Oehler about them he advised us to not use chronographs for bullets that do not meet the standard drag profiles..... These and the other ones that were made in Canada do not follow the current drag profiles that are available to me.
So, we shot some drops today. Back in December we zeroed the guns at 400 yards and then tested them at 600 just to get some trajectory information to use in the latter part of hunting season for meat expansion testing... The trajectory data was astounding and we decided not to publish it until we got some longer range drops performed.
Mr Eddybo obtained some numbers with his testing and seemed suprised at the results as we were with our testing results.....
Anyway, today we verified the 400 yard zero and then shot out to 928 on a vertical drop board. Todays results gave the same performance as the mid range testing back in December. Below is the range conditions and pertinant data. If someone could run these numbers and let us know what the results are, I would appreciate it.
338 Lapua Improved (My 1995 design with the 30 Snyper brass from Bell Labs)
1-10" twist
400 yd zero
265 gr
3245 fps at muzzle
2.13" sight height
69.6 degrees F
82% humidity
82' above sea level
29.84"Hg
calm winds... Impact points were about 1.5" to the left of the aiming point. This is well inside one click on the Nightforce 12-42 NXS scope.
At 928 yards the holes were -10.3 to -10.5 moa below the aiming point.
All the shots today were cold bore shots and they were about 10-15 minutes apart. We let the barrel cool while we went down to the target board and marked the holes. Group size was 3.5". We let the barrel cool while we went down to the target board and marked the holes.
Tomorrow the expansion tests will be performed at 928 on some phone books and newspaper I have been collecting for about 4 months.... This should not be a problem since the gun was grouping 3.5" at the 928 yard target board.
Thanks in advance for the help.
I think the 280s and the 300s will make our jaws drop open when we test them.
Hurry up RG and get me some 280s and 300s for drop testing.
James
We finally got some range time to test the 265s.
Before I go any further, I want to apologize to Kirby because I gave him a hard time about shooting drops for BC with the Aluminum tipped high speed and low drag bullet profiles..... Kirby I apologize. After conferring with Dr Ken Oehler about them he advised us to not use chronographs for bullets that do not meet the standard drag profiles..... These and the other ones that were made in Canada do not follow the current drag profiles that are available to me.
So, we shot some drops today. Back in December we zeroed the guns at 400 yards and then tested them at 600 just to get some trajectory information to use in the latter part of hunting season for meat expansion testing... The trajectory data was astounding and we decided not to publish it until we got some longer range drops performed.
Mr Eddybo obtained some numbers with his testing and seemed suprised at the results as we were with our testing results.....
Anyway, today we verified the 400 yard zero and then shot out to 928 on a vertical drop board. Todays results gave the same performance as the mid range testing back in December. Below is the range conditions and pertinant data. If someone could run these numbers and let us know what the results are, I would appreciate it.
338 Lapua Improved (My 1995 design with the 30 Snyper brass from Bell Labs)
1-10" twist
400 yd zero
265 gr
3245 fps at muzzle
2.13" sight height
69.6 degrees F
82% humidity
82' above sea level
29.84"Hg
calm winds... Impact points were about 1.5" to the left of the aiming point. This is well inside one click on the Nightforce 12-42 NXS scope.
At 928 yards the holes were -10.3 to -10.5 moa below the aiming point.
All the shots today were cold bore shots and they were about 10-15 minutes apart. We let the barrel cool while we went down to the target board and marked the holes. Group size was 3.5". We let the barrel cool while we went down to the target board and marked the holes.
Tomorrow the expansion tests will be performed at 928 on some phone books and newspaper I have been collecting for about 4 months.... This should not be a problem since the gun was grouping 3.5" at the 928 yard target board.
Thanks in advance for the help.
I think the 280s and the 300s will make our jaws drop open when we test them.
Hurry up RG and get me some 280s and 300s for drop testing.
James