Underwood 10mm Auto 220gr Hard Cast Ballistics
Nickel-Plated Brass Case • Hard Cast • MPN: 242
Underwood 10mm Auto 220gr Hard Cast Ballistics
Nickel-Plated Brass Case • Hard Cast • MPN: 242
Solved from this product's advertised 1200 fps, 220gr bullet and G1 BC 0.135, with the sight 0.5" over the bore at standard conditions. Compare every zero for 10mm Auto.
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.
10mm Auto 220gr 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 +0.2" at 24 yards, crosses back down at 37 yards, and is -0.7" at 50 and -8.5" 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 | 1,200 | 704 | 0.1 |
| 5 | -0.2" | -4.01 | -1.17 | 1,184 | 685 | 0.1 |
| 10 | 0.0" | -0.05 | -0.01 | 1,170 | 668 | 0.1 |
| 15 | +0.1" | +0.90 | +0.26 | 1,156 | 652 | 0.2 |
| 20 | +0.2" | +1.07 | +0.31 | 1,142 | 637 | 0.3 |
| 25 | +0.2" | +0.92 | +0.27 | 1,129 | 623 | 0.4 |
| 30 | +0.2" | +0.60 | +0.17 | 1,117 * | 609 | 0.6 |
| 35 | +0.1" | +0.18 | +0.05 | 1,105 * | 596 | 0.8 |
| 40 | -0.1" | -0.30 | -0.09 | 1,093 * | 584 | 1.0 |
| 45 | -0.4" | -0.83 | -0.24 | 1,082 * | 572 | 1.2 |
| 50 | -0.7" | -1.39 | -0.40 | 1,072 * | 561 | 1.4 |
| 55 | -1.2" | -1.98 | -0.58 | 1,062 * | 551 | 1.7 |
| 60 | -1.6" | -2.60 | -0.76 | 1,052 * | 541 | 2.0 |
| 65 | -2.2" | -3.24 | -0.94 | 1,043 * | 531 | 2.3 |
| 70 | -2.9" | -3.89 | -1.13 | 1,034 * | 522 | 2.7 |
| 75 | -3.6" | -4.56 | -1.33 | 1,025 * | 513 | 3.0 |
| 80 | -4.4" | -5.25 | -1.53 | 1,017 * | 505 | 3.4 |
| 85 | -5.3" | -5.95 | -1.73 | 1,008 * | 497 | 3.8 |
| 90 | -6.3" | -6.66 | -1.94 | 1,001 * | 489 | 4.3 |
| 95 | -7.4" | -7.39 | -2.15 | 993 * | 482 | 4.7 |
| 100 | -8.5" | -8.12 | -2.36 | 986 * | 475 | 5.2 |
220gr G1 .135 at 1,200 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 27 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
10mm Auto 220gr 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 without ever climbing above it (a tangent zero), and is -1.2" at 50 and -9.5" 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 | 1,200 | 704 | 0.1 |
| 5 | -0.3" | -4.92 | -1.43 | 1,184 | 685 | 0.1 |
| 10 | -0.1" | -0.96 | -0.28 | 1,170 | 668 | 0.1 |
| 15 | 0.0" | -0.01 | 0.00 | 1,156 | 652 | 0.2 |
| 20 | 0.0" | +0.16 | +0.05 | 1,142 | 637 | 0.3 |
| 25 | 0.0" | +0.01 | 0.00 | 1,129 | 623 | 0.4 |
| 30 | -0.1" | -0.31 | -0.09 | 1,117 * | 609 | 0.6 |
| 35 | -0.3" | -0.73 | -0.21 | 1,105 * | 596 | 0.8 |
| 40 | -0.5" | -1.21 | -0.35 | 1,093 * | 584 | 1.0 |
| 45 | -0.8" | -1.74 | -0.51 | 1,082 * | 572 | 1.2 |
| 50 | -1.2" | -2.30 | -0.67 | 1,072 * | 561 | 1.4 |
| 55 | -1.7" | -2.89 | -0.84 | 1,062 * | 551 | 1.7 |
| 60 | -2.2" | -3.51 | -1.02 | 1,052 * | 541 | 2.0 |
| 65 | -2.8" | -4.15 | -1.21 | 1,043 * | 531 | 2.3 |
| 70 | -3.5" | -4.80 | -1.40 | 1,034 * | 522 | 2.7 |
| 75 | -4.3" | -5.47 | -1.59 | 1,025 * | 513 | 3.0 |
| 80 | -5.2" | -6.16 | -1.79 | 1,017 * | 505 | 3.4 |
| 85 | -6.1" | -6.86 | -2.00 | 1,008 * | 497 | 3.8 |
| 90 | -7.2" | -7.57 | -2.20 | 1,001 * | 489 | 4.3 |
| 95 | -8.3" | -8.30 | -2.41 | 993 * | 482 | 4.7 |
| 100 | -9.5" | -9.03 | -2.63 | 986 * | 475 | 5.2 |
220gr G1 .135 at 1,200 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 27 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
10mm Auto 220gr 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 -1.2" at 50 and -9.5" 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 | 1,200 | 704 | 0.1 |
| 5 | -0.3" | -4.92 | -1.43 | 1,184 | 685 | 0.1 |
| 10 | -0.1" | -0.96 | -0.28 | 1,170 | 668 | 0.1 |
| 15 | 0.0" | -0.01 | 0.00 | 1,156 | 652 | 0.2 |
| 20 | 0.0" | +0.16 | +0.05 | 1,142 | 637 | 0.3 |
| 25 | 0.0" | +0.01 | 0.00 | 1,129 | 623 | 0.4 |
| 30 | -0.1" | -0.31 | -0.09 | 1,117 * | 609 | 0.6 |
| 35 | -0.3" | -0.73 | -0.21 | 1,105 * | 596 | 0.8 |
| 40 | -0.5" | -1.21 | -0.35 | 1,093 * | 584 | 1.0 |
| 45 | -0.8" | -1.74 | -0.51 | 1,082 * | 572 | 1.2 |
| 50 | -1.2" | -2.30 | -0.67 | 1,072 * | 561 | 1.4 |
| 55 | -1.7" | -2.89 | -0.84 | 1,062 * | 551 | 1.7 |
| 60 | -2.2" | -3.51 | -1.02 | 1,052 * | 541 | 2.0 |
| 65 | -2.8" | -4.15 | -1.21 | 1,043 * | 531 | 2.3 |
| 70 | -3.5" | -4.80 | -1.40 | 1,034 * | 522 | 2.7 |
| 75 | -4.3" | -5.47 | -1.59 | 1,025 * | 513 | 3.0 |
| 80 | -5.2" | -6.16 | -1.79 | 1,017 * | 505 | 3.4 |
| 85 | -6.1" | -6.86 | -2.00 | 1,008 * | 497 | 3.8 |
| 90 | -7.2" | -7.57 | -2.20 | 1,001 * | 489 | 4.3 |
| 95 | -8.3" | -8.30 | -2.41 | 993 * | 482 | 4.7 |
| 100 | -9.5" | -9.03 | -2.63 | 986 * | 475 | 5.2 |
220gr G1 .135 at 1,200 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 27 yards; expect groups to open up past the transition. Source: Manufacturer's advertised velocity and BC.
Product Overview
Underwood 220-grain Hard Cast is a flat-nose hard cast lead 10mm Auto load made for hunting medium, large and dangerous game. At 220 grains it is the heaviest bullet in the caliber, cast hard enough that it does not expand. It leaves the muzzle at 1,200 fps with 704 ft-lbs.
On a 25-yard zero it drops 1.2 inches at 50, where it still carries 561 ft-lbs. Estimated recoil in a compact pistol is 15.8 ft-lbs, the most of any 10mm load compared.
If you're cross-shopping, Underwood's own 200-grain Hard Cast is 50 fps faster at 1,250 fps. Federal Solid Core 200-grain Syntech leaves at the same 1,200 fps with a lighter bullet. This one carries the most muzzle energy of the three.
- 10 more ft-lbs at the muzzle than Underwood's 200-grain Hard Cast
- 20 more grains of bullet than Federal Solid Core 200-grain Syntech
- Still carrying more energy at 50 yards than Underwood's 200-grain Hard Cast
- About 13 percent more estimated recoil in the same pistol than Underwood's 200-grain Hard Cast
- Reaches 50 yards 29 fps slower than Underwood's 200-grain Hard Cast
- Bare cast lead, where Federal Solid Core 200-grain Syntech carries a polymer coating over it
All Underwood 10mm Auto 220gr Hard Cast Prices
| DEALER | QTY | PRICE | SHIPPING | TOTAL | PRICE/RD |
|---|---|---|---|---|---|
| Lucky Gunner | 20 | $27.00 | $18.43 | $45.43 | $2.27 |
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