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HRM Johnny
Well-Known Member
Welcome from Virginia.
Welcome from Illinois!!
You will find what you need here!!
You will find what you need here!!
Rflshootr
Well-Known Member
Welcome from MD. Now let's talk about why you want to re-barrel from 270WSM to 300WSM.
Here is something to think about.
.277 140 grain Berger Classic Hunter
That's no slouch. And you might even be able to get it up near 3100 FPS.
That should easily take you to 1/4 mile.
Here is something to think about.
.277 140 grain Berger Classic Hunter
| Input Parameters | |||
|---|---|---|---|
| Bullet Diameter | 0.277 inches | Zero Range | 100 yards |
| Bullet Weight | 140 grains | Sight Height | 1.50 in |
| Ballistic Coefficient | 0.271 | Muzzle Velocity | 3000 fps |
| Temperature | 40 F | Wind Speed | 0.00 mph |
| Altitude | 1000 feet | Wind Direction | 9 o'clock |
| Inclination | 0 degrees | Berger Bullets | Copyright 2013 |
| Range Card | |||||
|---|---|---|---|---|---|
| Range (y) | Velocity (fps) | Energy (ft-lbs) | Elevation (inches) | Windage (inches) | TOF (s) |
100 | 2825 | 2482 | 0.00 | 0.00 | 0.10 |
150 | 2740 | 2333 | -0.85 | 0.00 | 0.16 |
200 | 2655 | 2192 | -2.86 | 0.00 | 0.21 |
250 | 2572 | 2057 | -6.10 | 0.00 | 0.27 |
300 | 2491 | 1929 | -10.66 | 0.00 | 0.33 |
350 | 2411 | 1807 | -16.61 | 0.00 | 0.39 |
400 | 2332 | 1691 | -24.07 | 0.00 | 0.45 |
450 | 2255 | 1581 | -33.12 | 0.00 | 0.52 |
500 | 2180 | 1477 | -43.88 | 0.00 | 0.59 |
That should easily take you to 1/4 mile.
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