Underwood .45 Colt 135gr Extreme Defender Ammo Ballistics
Nickel-Plated Brass Case • Xtreme Defender
Underwood .45 Colt 135gr Extreme Defender Ammo Ballistics
Nickel-Plated Brass Case • Xtreme Defender
Solved from this product's advertised 1410 fps, 135gr bullet and G1 BC 0.095, with the sight 0.5" over the bore at standard conditions. Compare every zero for .45 Colt.
How to read it: filled circles are the near and far zero, where the bullet's path crosses the line of sight;the triangle is the peak (max ordinate). The shaded band is the 4" vital zone, ±2" either side of the line of sight. The dashed line marks the edge of the hold-dead-on window. The chart is zoomed to where the zero matters; the tables below run to 100 yards.
.45 Colt 135gr with a 10-yard zero
Zeroed at 10 yards with a 0.5" sight height, this load crosses the line of sight on the way up at 10 yards, peaks +0.4" at 29 yards, crosses back down at 48 yards, and is -0.1" at 50 and -6.3" at 100 yards.
| Range (yd) | Drop (in) | Drop (MOA) | Drop (MIL) | Velocity (fps) | Energy (ft-lb) | Wind drift, 10 mph (in) |
|---|---|---|---|---|---|---|
| 0 | -0.5" | 0.00 | 0.00 | 1,410 | 596 | 0.1 |
| 5 | -0.2" | -4.16 | -1.21 | 1,380 | 571 | 0.1 |
| 10 | 0.0" | -0.05 | -0.02 | 1,351 | 547 | 0.1 |
| 15 | +0.2" | +1.05 | +0.30 | 1,323 | 525 | 0.3 |
| 20 | +0.3" | +1.37 | +0.40 | 1,297 | 504 | 0.4 |
| 25 | +0.4" | +1.36 | +0.40 | 1,271 | 484 | 0.6 |
| 30 | +0.4" | +1.19 | +0.35 | 1,246 | 466 | 0.8 |
| 35 | +0.3" | +0.92 | +0.27 | 1,222 | 448 | 1.1 |
| 40 | +0.2" | +0.57 | +0.17 | 1,200 | 432 | 1.4 |
| 45 | +0.1" | +0.17 | +0.05 | 1,178 | 416 | 1.7 |
| 50 | -0.1" | -0.26 | -0.08 | 1,158 | 402 | 2.1 |
| 55 | -0.4" | -0.73 | -0.21 | 1,139 | 389 | 2.6 |
| 60 | -0.8" | -1.23 | -0.36 | 1,121 * | 377 | 3.0 |
| 65 | -1.2" | -1.75 | -0.51 | 1,104 * | 365 | 3.5 |
| 70 | -1.7" | -2.30 | -0.67 | 1,088 * | 355 | 4.1 |
| 75 | -2.3" | -2.86 | -0.83 | 1,073 * | 345 | 4.6 |
| 80 | -2.9" | -3.45 | -1.00 | 1,058 * | 336 | 5.2 |
| 85 | -3.6" | -4.05 | -1.18 | 1,045 * | 327 | 5.9 |
| 90 | -4.4" | -4.67 | -1.36 | 1,032 * | 319 | 6.5 |
| 95 | -5.3" | -5.31 | -1.54 | 1,020 * | 312 | 7.3 |
| 100 | -6.3" | -5.96 | -1.73 | 1,008 * | 305 | 8.0 |
135gr G1 .095 at 1,410 fps, 0.5" sight height over bore, standard conditions (59°F, sea level), 10 mph full-value crosswind. Positive drop is above the line of sight. * Below the speed of sound (1125 fps) from 59 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
.45 Colt 135gr with a 15-yard zero
Zeroed at 15 yards with a 0.5" sight height, this load touches the line of sight at 15 yards and never rises more than 0.1" above it (effectively a tangent zero), and is -0.7" at 50 and -7.4" at 100 yards.
| Range (yd) | Drop (in) | Drop (MOA) | Drop (MIL) | Velocity (fps) | Energy (ft-lb) | Wind drift, 10 mph (in) |
|---|---|---|---|---|---|---|
| 0 | -0.5" | 0.00 | 0.00 | 1,410 | 596 | 0.1 |
| 5 | -0.3" | -5.23 | -1.52 | 1,380 | 571 | 0.1 |
| 10 | -0.1" | -1.12 | -0.32 | 1,351 | 547 | 0.1 |
| 15 | 0.0" | -0.02 | 0.00 | 1,323 | 525 | 0.3 |
| 20 | +0.1" | +0.30 | +0.09 | 1,297 | 504 | 0.4 |
| 25 | +0.1" | +0.30 | +0.09 | 1,271 | 484 | 0.6 |
| 30 | 0.0" | +0.13 | +0.04 | 1,246 | 466 | 0.8 |
| 35 | -0.1" | -0.15 | -0.04 | 1,222 | 448 | 1.1 |
| 40 | -0.2" | -0.49 | -0.14 | 1,200 | 432 | 1.4 |
| 45 | -0.4" | -0.89 | -0.26 | 1,178 | 416 | 1.7 |
| 50 | -0.7" | -1.33 | -0.39 | 1,158 | 402 | 2.1 |
| 55 | -1.0" | -1.79 | -0.52 | 1,139 | 389 | 2.6 |
| 60 | -1.4" | -2.29 | -0.67 | 1,121 * | 377 | 3.0 |
| 65 | -1.9" | -2.81 | -0.82 | 1,104 * | 365 | 3.5 |
| 70 | -2.5" | -3.36 | -0.98 | 1,088 * | 355 | 4.1 |
| 75 | -3.1" | -3.93 | -1.14 | 1,073 * | 345 | 4.6 |
| 80 | -3.8" | -4.51 | -1.31 | 1,058 * | 336 | 5.2 |
| 85 | -4.6" | -5.11 | -1.49 | 1,045 * | 327 | 5.9 |
| 90 | -5.4" | -5.74 | -1.67 | 1,032 * | 319 | 6.5 |
| 95 | -6.4" | -6.37 | -1.85 | 1,020 * | 312 | 7.3 |
| 100 | -7.4" | -7.03 | -2.04 | 1,008 * | 305 | 8.0 |
135gr G1 .095 at 1,410 fps, 0.5" sight height over bore, standard conditions (59°F, sea level), 10 mph full-value crosswind. Positive drop is above the line of sight. * Below the speed of sound (1125 fps) from 59 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
.45 Colt 135gr with a 25-yard zero
Zeroed at 25 yards with a 0.5" sight height, this load touches the line of sight at 25 yards without ever climbing above it (a tangent zero), and is -0.9" at 50 and -7.7" at 100 yards.
| Range (yd) | Drop (in) | Drop (MOA) | Drop (MIL) | Velocity (fps) | Energy (ft-lb) | Wind drift, 10 mph (in) |
|---|---|---|---|---|---|---|
| 0 | -0.5" | 0.00 | 0.00 | 1,410 | 596 | 0.1 |
| 5 | -0.3" | -5.52 | -1.61 | 1,380 | 571 | 0.1 |
| 10 | -0.2" | -1.41 | -0.41 | 1,351 | 547 | 0.1 |
| 15 | -0.1" | -0.31 | -0.09 | 1,323 | 525 | 0.3 |
| 20 | 0.0" | +0.01 | 0.00 | 1,297 | 504 | 0.4 |
| 25 | 0.0" | +0.01 | 0.00 | 1,271 | 484 | 0.6 |
| 30 | -0.1" | -0.17 | -0.05 | 1,246 | 466 | 0.8 |
| 35 | -0.2" | -0.44 | -0.13 | 1,222 | 448 | 1.1 |
| 40 | -0.3" | -0.79 | -0.23 | 1,200 | 432 | 1.4 |
| 45 | -0.6" | -1.18 | -0.34 | 1,178 | 416 | 1.7 |
| 50 | -0.9" | -1.62 | -0.47 | 1,158 | 402 | 2.1 |
| 55 | -1.2" | -2.09 | -0.61 | 1,139 | 389 | 2.6 |
| 60 | -1.6" | -2.59 | -0.75 | 1,121 * | 377 | 3.0 |
| 65 | -2.1" | -3.11 | -0.90 | 1,104 * | 365 | 3.5 |
| 70 | -2.7" | -3.65 | -1.06 | 1,088 * | 355 | 4.1 |
| 75 | -3.3" | -4.22 | -1.23 | 1,073 * | 345 | 4.6 |
| 80 | -4.0" | -4.81 | -1.40 | 1,058 * | 336 | 5.2 |
| 85 | -4.8" | -5.41 | -1.57 | 1,045 * | 327 | 5.9 |
| 90 | -5.7" | -6.03 | -1.75 | 1,032 * | 319 | 6.5 |
| 95 | -6.6" | -6.67 | -1.94 | 1,020 * | 312 | 7.3 |
| 100 | -7.7" | -7.32 | -2.13 | 1,008 * | 305 | 8.0 |
135gr G1 .095 at 1,410 fps, 0.5" sight height over bore, standard conditions (59°F, sea level), 10 mph full-value crosswind. Positive drop is above the line of sight. * Below the speed of sound (1125 fps) from 59 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
Product Overview
Underwood 135-grain Extreme Defender is a solid copper .45 Colt load made for self-defense. Underwood cuts deep flutes into the nose of a copper solid, leaving no hollow cavity. At 1,410 fps it makes 596 ft-lbs.
Zeroed at 25 yards, it is 0.9 inch low at 50. Its estimated recoil of 7.9 ft-lbs in the same revolver is about 18 percent under Fort Scott Munitions 225-grain TUI, despite the extra speed.
If you're cross-shopping, Fort Scott Munitions 225-grain TUI is 541 fps slower with 219 ft-lbs less at the muzzle. Hornady Critical Defense 185-grain FTX is a polymer-tipped hollow point at 920 fps and 348 ft-lbs.
- Lead-free, for ranges and units with a no-lead rule
- Still moving 1,158 fps with 402 ft-lbs at 50 yards
- Underwood's lightest .45 Colt bullet
- Loses 194 ft-lbs of its energy between the muzzle and 50 yards
- The lightest bullet in .45 Colt, where the carry and hunting loads run 185 grains and up
All Underwood .45 Colt 135gr Extreme Defender Ammo Prices
| DEALER | QTY | PRICE | SHIPPING | TOTAL | PRICE/RD |
|---|---|---|---|---|---|
| Sentry Ammo | 20 | $54.12 | $11.99 | $66.11 | $3.31 |
| Black Basin Outdoors | 20 | $55.30 | $10.99 | $66.29 | $3.31 |
| Fast Ammo | 20 | $54.12 | $12.99 | $67.11 | $3.36 |
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