Monday, March 26, 2007

AR-15 MAGAZINES - Ruger super blackhawk This one I took in on

Ruger super blackhawk

This one I took in on a trade 5 years ago and fired it once. It is in great shape and fired very well and was more acccurate than p89 ruger bearcat . I did adjust the sights ( which are adjustable) and was very pleased with the groups it shot. It has very slight wear near the end of the barrel but small Ruger super blackhawk, Cylinder looks great.

mspasfeh032

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Ruger 10/22 stock

Subsonic rounds have a Ruger 10/22 stock of 330 m/s (1082 ft/s) or less and are sometimes equipped with an extra heavy,46-61grains 2.9-3.9 gram bullet. Conversely, some rounds contain little more than primer and an extra-light bullet. Subsonic rounds are especially favored for their perceived improved target accuracy, and for hunting. As the speed of sound in air at 20 C (68 F) is approximately 343.4 m/s (1126 ft/s), the subsonic round's muzzle velocity is close to the speed of sound under many hunting conditions, or only very slightly below it. However, under cold air conditions at 0 C (32 F), the speed of sound drops to 331.5 m/s (1087.6 ft/s), essentially the same speed as the muzzle velocity of the subsonic round. Hence, a so-called subsonic round when used under slightly colder conditions than 0 C (32 F) is often no longer subsonic and instability may arise when crossing down through the speed of sound, reducing accuracy. To counteract this, some cartridge manufacturers have lowered the speed of their subsonic ammunition to 315 m/s (1030 ft/s) or significantly less, while other manufacturers still sell subsonic ammunition with a velocity only slightly under 330 m/s(1082 ft/s). Subsonic rounds do not work well in all semi-automatic .22 LR firearms, often failing to cycle the action.

mwgsam68

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