Long Range ML--Quicktarget Maximum Range Results
Yes--the earth has an atmosphere and drag is THE factor on bullet speed (terminal verlocity) at point of impact on a maximum range shot.
This accident illustrates why I did not take an uphill shot on a doe standing on the top of a ridge with my .45 cal. inline this year. I hunt with a resized pure lead Gould Express bullet (Lyman 457122--a famous .45-70 bullet). My hunting load produces a muzzle velocity of 1460 fps but I've launched this bullet as fast as 1830 fps from my inline too.
Greg Danas, the "firearms expert" quoted in the USA Today newspaper story is an idiot for saying that "For a bullet to kill someone after traveling a mile and a half is a practical impossibility." so, just for kicks, I ran 1830 fps through Qucktarget Unlimited (from the Quickload software package). Even when I back off to 1460 fps, the range is only reduced from 3111 yards to 2943 yards (still well over 1-1/2 miles). Notice that the results are very consistent with the previously posted bar graph for the .45-70, just as I expected from my inline when shooting the famous .45-70 Gould Express bullet! Also notice that the impact velocity and energy are 355 fps (242 mph) / 180 ft-lbs. I sure wouldn't want to be in the way of it!
By the way, I did get a doe for my freezer a few minutes later with a shot into the hillside.
-Cal
Here's the 1830 fps result:
Sight-IN Data : Instrumental Readings Barometric Pressure : 26 in.Hg
Altitude : 200.0 m Temperature : 42 °F
Humidity : 70 % Angle of Site : 0.0 deg
Latitude of Site : 45.37414 deg Longitude of Site : -122.376254 deg
Direction to Target : 66.0 deg Canting of Gun : 0.0 deg
Wind Speed : 0.0 km/h Direction of Wind : 0.0 deg
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Bullet : .457, 330, LYM LFNHP 457122
Bullet Weight : 350.0 gr
Muzzle Velocity : 1830.0 ft/s
Ballistic Coefficients
BC1 = 0.270, @V > 549 m/s
BC2 = 0.267, @V > 427 m/s
BC3 = 0.265, @V > 0 m/s
Drag Model used : G1
Sectional Density of Standard Projectile : 1 lb./sq.in.
File: G1-SAAMI Standard model
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Calculate Maximum Horizontal Range :
Maximum Horizontal Range ............ 3111 yd
Angle of Elevation .................. 34.61 deg
Angle of Descent .................... 64.71 deg
Total Flight Time ................... 25.37 sec
Impact Velocity ..................... 355 ft/s
Impact Energy ....................... 180.05 ft-lbs
Vertex Height ....................... 909 yd
Vertex Range ........................ 1952 yd
Velocity at Vertex .................. 340 ft/s
Time to Vertex ...................... 10.64 sec