Author Topic: .17 MACH IV: What is it? (Read 1482 times)

coyote trapper1929 · « **on:** November 30, 2005, 05:23:24 AM »

What is the .17 Mach IV? What rifles are chambered in it and where can you buy the ammo?

Thanks,

Hildy · « **Reply #1 on:** November 30, 2005, 10:52:25 AM »

"Introduced by the O'Brian rifle company of Las Vegas, Nevada, this cartridge was intended to offer simple case conversion and good ballistics. It succeeded on both counts but could not compete against factory chambering, i.e. the 17 Remington. This short cartridge can be used in short rifle action rifles. Efficiency is much better than the various full powder 17's available. This diminutive chambering can produce over 3850 fps with 25 grain bullets and is fully capable of delivering good varmint accuracy to about 250 yards, perhaps a bit further on a calm day. Muzzle blast is in a different league from larger 17's and the various high performance 22's."-------Reloadersnest.com

You can't buy factory ammo for it. It is a wildcat in which you have to fire-form the brass and load your own bullets. Wildcatting in itself can be very tedious and at times a PITA :-D

Rifles vary from alot of custom rifles such as Cooper. Most guys who shoot this cartridge use a full custom gun starting from the action on up. I'm not sure of any other factory rifles chambered for 17 Mach IV.

BS · « **Reply #2 on:** December 09, 2005, 12:12:59 PM »

Hildy met to tell you that it is a 221 fireball necked down to 17 cal.

Reed1911 · « **Reply #3 on:** December 19, 2005, 11:01:55 AM »

It's a heck of a fine round, Factory ammunition is available from us.

BS · « **Reply #4 on:** December 19, 2005, 11:31:58 AM »

Quote from: Reed1911

It's a heck of a fine round, Factory ammunition is available from us.

I looked, but could not find where they are hiding! :?:

manofthe45 · « **Reply #5 on:** September 19, 2006, 10:28:43 AM »

loaded ammo is also available from cooper firearms excellent ammo