The .577 Tyrannosaur or .577 T-Rex (14.9×76mm) is a very large and powerful rifle cartridge developed by A-Square in 1993 on request for professional guides in Zimbabwe who escort …

2015年1月18日 · At an average bullet weight of 450 grains, the .557 Snider is by far the lightest of the cartridges on this list, yet it does have the notable distinction of being the only one to see …

2010年4月14日 · A-Square, Inc., in .557 T-Rex (Tyrannosaurus Rex). The rifle fires a .557-inch diameter, 750-grain bullet at 2,450 feet per second from a 13.8-pound rifle. Muzzle energy is a …

该弹药筒设计用于“停止步枪”，旨在阻止危险游戏的冲锋。 弹药筒包含一颗直径为.585-英寸（14.9-毫米）、750-格令（49-克）的单一固体射弹，发射时以2,460 ft/s（750 m/s）的速度移 …

2007年8月31日 · Purpose built to stop charging Rhinos, Hippopotami, and rogue elephants, it gained its name because it could indeed stop the biggest dinosaur – it’s the most powerful …

2015年7月24日 · It is next to impossible to shoot the .577 Tyrannosaur aka the T-rex and look manly. This rifle is crazy powerful and has a recoil to match. Every so often we come across a …

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2022年9月14日 · The .577 Tyrannosaur, also known as the .577 T-Rex, refers to a large and extremely powerful cartridge. It measures 14.9×76 mm and was developed on request for …

2001年3月22日 · It would be interesting to see this cartridge performs in a bolt action rifle. We used the Federal 215 primer, and the Barnes monolithic solid 750 grain bullet, and the overall …

The 577 Tyrannosaur , a.k.a. 577 T-Rex was the largest Proprietary Cartridge introduced in 1993 by the now closed A-Square Company as an entirely brand new Cartridge for the A-Squire …