HMR versus HM2 question
 

i know nothing about this caliber. anyway, i won a 17 hmr at a deer banquent recently. when i went to buy ammo for it, i see hmr2 rounds, which are short, and regular hmr rounds, where are about 1/4" longer. can you fire either of these rounds in a regular .17 hmr? i'm really confused. they look like exactly the same thing only different lengths. here's a pic of what im talking about. the hm2 is on the left, the regular hmr on the right:

http://upload.wikimedia.org/wikipedi...ily.jpg/200px-

which one of these do i buy?

Re: HMR versus HM2 question
 

Chad, Congrats on your win! You only want to use the longer ones.

Re: HMR versus HM2 question
 

alright, thanks! it's a marlin with a 5 shot clip and a scope. nice little unit for a $5 ticket. the ammo looks pretty cheap.

Re: HMR versus HM2 question
 

Ditto........Longer ones have more POWDER = greater distance and better accuracy.

Re: HMR versus HM2 question
 

The two cartridges are NOT interchangeable...If you have a 17 HMR chambered firearm, you need to buy the longer 17 HMR ammunition NOT the shorter 17 Mach 2. I recommend the Hornady V-MAX Ballistic Tip:

Re: HMR versus HM2 question
 

aw crap, looks like a bought 6 boxes of the wrong stuff then. AHHHHHRGH. no receipt to take it back either. crap.

Re: HMR versus HM2 question
 

The 17 HMR is a 22 Magnum necked down to 17 caliber...

and the 17 Mach 2 is a 22 Long Rifle necked down to 17 caliber.

The purpose was to produce a higher velocity, flatter-shooting, better terminal performance varmint rimfire round.

Re: HMR versus HM2 question
 

17HMR is an awesome round for target shooting and small critters (or head shots on larger critters).

Re: HMR versus HM2 question
 

As a point of reference, all 17 HMR ammunition with a polymer ballistic tips.....are produced by the exact same manufacturer....which is CCI. I understand that there may be variations in powder uesd...but it is still all made by CCI.

The ballistic tip ammo is all 17 grain...and goes about 2500 - 2550 ft/sec. This is only good for small game and for head shots....not much penetration and explosive fragmentation.

There is a metal jacketed 20 grain that would be more appropriate for slightly larger game or longer shots where you want to make a head shot and have penetration ....like for longer shots on fox, coyote, racoons. I know of guys that have taken kangaroos up to 45 lbs.

For tons of info on the 17 HMR..... www.17hmr.net

I have a Mossberg 17 HMR with a 3.5 - 10x scope....perfect for hunting shots out to 150 yards...perhaps even 200 yards on small game. The 17 HMR is a very accurate round.

Ammo is not cheap but not expensive....you can find it on sale for about $10/box of 50.

It fits a niche of still quiet like a 22LR.....much flatter than the 22 Mag......still a lot of performance for a non centerfire round. In my book, fills the gap between 22LR and the .223 centerfire. I know it is a big step to go from 17 HMR to .223...but why bother owning anything in between?

In an emergency - I'm sure it would kill a deer with a head shot.

I really would not bother with the HMR2.....a neat idea, where you could easily convert a 22LR rifle with a simple barrel change. A Ruger 10/22 in HMR2 might be neat to have ....would be as much flatter shooting version of a 22LR....but still only has 22LR energy......about 120 ft-lbs of energy at muzzle....while the 22 Mag / 17 HMR is 250 ft-lbs energy at muzzle.

Like I say...the next gun up in my selection is the .223 making 1200 ft-lbs an outstanding varmit round out to 250 yards in an accurate bolt gun........I guess I do have an M1 Carbine that makes nearly 950 ft-lbs.....but why bother with that if you have a .223?

Re: HMR versus HM2 question
 

as stated before you can only use 17hmr ammo

both of the 17s are great target rounds

the 17m2 is a true 100yd paper puncher lotta fun at the range or plinking

the 17hmr is a true 150yd cartrige great little hunting round and paper puncher

I have been looking for a 17hmr as a mess around,take on the boat, hunting gun If yours is the magnum research houge overmolded stock version i would love to take it off your hands