17 HM2 Ammo
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History of .17 Hornady Mach 2 Ammunition
The .17 Hornady Mach 2 (.17 HM2) was introduced by the Hornady Manufacturing Company in 2004. This cartridge is based on a slightly lengthened and bottlenecked .22 LR case - not to be confused with the Hornady .17 HMR which is based on the .22 Magnum case. Designed to be a 100 yard plus, varmint cartridge, the 17 HM2 performs admirably. The .17 HM2 is similar to the .22 LR in foot pounds of energy but it excels in velocity. This makes it a very flat shooting cartridge with 50 yard rise of less than an inch when zeroed at 100 yards.
Today, rifles chambered for the .17 HM2 can be found from several manufacturers, such as: Savage, Browning and others. Semi auto and bolt action are the most common types of actions made, but single shot rifles are not uncommon. The .17 HM2 is also found in revolvers and semi auto pistols as well. There is even a conversion kit for Ruger 10/22 owners.
Ammunition is currently made by Hornady and CCI, both offer 17 grain bullet loads, while Hornady also has a 15.5 grain bullet. Both of these loads exceed 2000 feet per second at the muzzle with 150 foot pounds of energy at the muzzle. Reports from shooters show that the .17 HM2 is effective on small vermin out to 150 yards.
Today the .17 HM2 is a popular choice among varmint hunters as the light recoil, flat trajectory and sub-minute of angle accuracy all combine to make it head and shoulders above other rimfire cartridges.
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