One dozen photon torpedos won't penetrate the shielding of Ty'Gykor's command center. "The Ship" - a Jem'Hadar ship can weather an uncontrolled crash onto a planet - glowing brightly on re-entry - with virtually no damage in spite of an earlier inertial damper failure and the crash embedding the ship ninety meters into rock. "Call to Arms" Weyoun: "Impossible. Federation shields have always proven useless against our weapons." "In the Pale Moonlight" - Betazed's planetary defenses were obsolete and undermanned; the Jem'Hadar took ten hours to conquer the planet. "Strange Bedfellows" - if a Romulan planet's long-range sensors are out, that makes it an easier target. "Tacking Into the Wind" - Fifteen Vor'cha battlecruisers would barely scratch the planetary defenses of Sarpedion Five. Bullet/Gun Type Caliber or Impact Area Mass Impact velocity V2M/A VM1/2/A1/2 Musket, large Musket .80" ~50g ~400 m/s 2.5x107 670 1911 Colt .45 ACP Pistol .45" 250 grain 750 fps 7.9x106 280 AK-47 Assault Rifle 7.62mm 7.4g 715 m/s 8.3x108 3,400 16"/50 mk 7 Battleship main gun 16" 1225kg 762 m/s 5.5x109 6,000 Jem'Hadar Bug Ship 28.6m2 ~1x108kg 285 m/s 2.8x1011 1.2x106 Jem'Hadar Bug Ship 28.6m2 ~1x108kg 1000 m/s 3.5x1012 4.3x106	SDN: Jem'Hadar attack ships  usually ram at ~1 km/s. ST-v-SW.net: Jem'Hadar attack ship rams USS Odyssey at 285 m/s.