The Firing Line Forums - View Single Post - Bullet Trajectory different than computer model

ethernectar · August 9, 2005, 09:09 AM

I shot my first tactical long-range match sunday. My POI was consistently higher than the computer ballistics program predicted. Now, the temp was significantly higher than I had calculated for (20 degrees) but when I got back home I recalculated for the temp (100ºƒ) and the POI was still higher. What input data could I have input wrong to result in the data being that far off. At 1000 yards I was something like 20+ clicks high.

The rifle is a JP Custom Sendero in 300 Win Mag. I'm still finding the 'sweet' load for it, but it'll shoot a 1/4" group at 100y.

m

August 9, 2005, 09:09 AM	#1
ethernectar Senior Member Join Date: October 28, 2004 Location: Central CA Posts: 218	Bullet Trajectory different than computer model I shot my first tactical long-range match sunday. My POI was consistently higher than the computer ballistics program predicted. Now, the temp was significantly higher than I had calculated for (20 degrees) but when I got back home I recalculated for the temp (100ºƒ) and the POI was still higher. What input data could I have input wrong to result in the data being that far off. At 1000 yards I was something like 20+ clicks high. The rifle is a JP Custom Sendero in 300 Win Mag. I'm still finding the 'sweet' load for it, but it'll shoot a 1/4" group at 100y. m