I don't know where my grandfather came by the Česká zbrojovka Uherský Brod (ČZUB) ZKW 465 rifle in .17 caliber. Because it was for export, the metal is stamped 'BRNO'. My grandfather called the rifle, "Bruno". This particular rifle was made in 1949 in the Moravian town of Uhersky Brod in what is now the Czech Republic.
|ZKW 465 with a 4 power scope|
During World War 2, my grandfather was head of small arms research and development with the War Department (Defense Dept. today) Office, Chief of Ordnance. Since he raised me, the passion was transferred. He was never a pistol shooter, preferring rifles for their superior characteristics for hunting and precision shooting.
The Speed of Sound at sea level is 1,116.43701 feet per second.
The sharp shoulder on the necked-down .22 Hornet case allows for higher (than standard) chamber pressure options. If you are shooting this hand-loads of this type you need to fire form your cases (shoot the cartridge once and then reload the expended case) to insure uniformity of loads and case size.
The Mauser pattern bolt action is very strong and can handle hotter than standard loads. While I advise that you don't try it if you don't know what you're doing, anyone who does hand loading likes to experiment with the edge of the envelope. When you start blowing primers and cracking case necks, you know that you're just past the edge.
This weapon is in its zone in ranges under about 75 meters, though it's accurate and effective farther away than that, you're shedding bullet mass. Depending on the target (a wild Javelina for example), that might matter because of the need to penetrate the target for a clean kill. It may sound a bit weird that you'd use a .17 Javelina to kill Javelina, but why not?