Lots of 30-30 threads here, it's one of the most popular and accurate H&R chamberings with factory ammo or handloads, I have two, one of them I hand reamed to Improved. With spitzer bullets, the improved version is good for deer to 300yds.

Tim
http://www.gboreloaded.com/forums/index.php?action=searchTrajectory for Sierra Bullets .308 dia. 125 gr. SPT at 2865 Feet per Second At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.279 0.277 0.264 0.264 0.264
Velocity Boundaries (Feet per Second) of: 2800 2000 2000 2000
Wind Direction is: 0.0 o'clock and a Wind Velocity of: 0.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 0.0 Vertical: 0.0
Altitude: 0 Feet with a Standard Atmospheric Model.
Temperature: 59 F
Data Printed in English Units
Range Velocity Energy Momentum Drop Bullet Path Wind Drift Time of Flight
(Yards) (Ft/Sec) (Ft/Lbs) (Lb-Sec) (inches) (inches) (inches) (Seconds)
0 2865.0 2277.9 1.59 0.0 -1.5 0.0 0.000000000
25 2781.2 2146.5 1.54 -0.13 0.08 0.0 0.026569360
50 2698.5 2020.8 1.50 -0.55 1.38 0.0 0.053946590
75 2617.3 1901.1 1.45 -1.26 2.38 0.0 0.082167722
100 2537.7 1787.1 1.41 -2.3 3.07 0.0 0.111269479
125 2459.3 1678.4 1.36 -3.66 3.41 0.0 0.141291468
150 2382.3 1575.0 1.32 -5.39 3.4 0.0 0.172277106
175 2306.7 1476.6 1.28 -7.5 3.01 0.0 0.204271302
200 2232.4 1383.0 1.24 -10.02 2.2 0.0 0.237321953
225 2159.5 1294.1 1.20 -12.98 0.97 0.0 0.271480694
250 2087.9 1209.7 1.16 -16.4 -0.74 0.0 0.306802283
275 2017.7 1129.7 1.12 -20.32 -2.94 0.0 0.343344164
300 1946.5 1051.4 1.08 -24.77 -5.68 0.0 0.381183610