[Nyksta]

Originally Posted by Don_Parsons

As mentioned, depends on the sources where the information is gathered I guess.

I'm guessing that the folks that reload their own ammo find data that works for then.

BULLET WEIGHT168 GR. SIE HPBT
ManufacturerHodgdon
PowderCFE 223
Bullet Diameter.308"
C.O.L.2.800"
Starting Load
Grains46.6
Velocity (ft/s)2,662
Pressure48,200 PSI
Maximum Load
Grains49.0
Velocity (ft/s)2,828
Pressure60,400 PSI

Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(m) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
0 -1.5 *** 0.0 *** 2856.1 2.558 3042.5 0.000 0.0 ***
100 -0.0 -0.0 0.7 0.6 2658.0 2.381 2635.1 0.119 21.0 18.3
200 -4.4 -1.9 3.1 1.3 2467.4 2.210 2270.7 0.247 43.5 19.0
300 -15.6 -4.5 7.2 2.1 2284.7 2.046 1946.9 0.385 67.8 19.7
400 -34.9 -7.6 13.3 2.9 2110.2 1.890 1660.9 0.535 94.1 20.5
500 -63.4 -11.1 21.6 3.8 1943.6 1.741 1409.0 0.697 122.6 21.

1409 ft-lbs energy.

I guess 19 ft-lbs energy difference using The IMR data info and JBM calculater might not work for us.

Hopefully wrong of course

Don

Its hard to see what the chart means but what is it showing