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World's Fastest Rimfire Round: Winchester .17 Super Magnum

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January 16, 2013

World's Fastest Rimfire Round: Winchester .17 Super Magnum

By The Editors

The .17 Win. Super Mag. comes with a workingman’s pedigree. The case is based off a .27--caliber nail-gun blank, which was modified and necked down to take the .17-caliber bullet. (These blanks, which come in three calibers—.22, .25, and .27—are a big business for Winchester, according to Greg Kosteck, the company’s marketing director.) Empty, the case measures 1.200 inches (vs. 1.064 inches for the .17 HMR). And its case walls are about 50 percent thicker than the .17 HMR’s, to handle the higher pressures the round generates (33,000 psi vs. 26,000 psi for the .17 HMR).

The first gun company signed up to produce rifles for the .17 Win. Super Mag. is Savage, which hopes to have rifles shipping by mid-April. Before the year is out, Kosteck says, at least two other major rifle makers will be chambering for the .17 Win. Super Mag.

See the full .17 Super Magnum review here.

Comments (13)

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from chuckles wrote 1 year 13 weeks ago

Yaaaay Savage!

0 Good Comment? | | Report
from Tim Platt wrote 1 year 13 weeks ago

How fast is it?

+1 Good Comment? | | Report
from Tim Platt wrote 1 year 13 weeks ago

Faster than an Asian date?

0 Good Comment? | | Report
from mike55 wrote 1 year 13 weeks ago

Congratulations to Winchester on their new .17 WSM (don't know yet if that's how they're going to abbreviate it, someone might confuse it with the short magnum case which would be pretty hot in .17 cal), on doing what Remington should have done years ago to their 5MM Rem Rim. Mag case. It too operated at 33k psi, looked like it would have had similar case cap. to the .17 WSM and with the newer slippery polymer tipped bullets could have used a lighter bullet with a better ballistic coefficient than the old 38gr. hollowpoint. With the lighter bullet a little more powder could be stuffed in the case combined with the a newer high energy powder, could have significantly improved the down range ballistics over the .17 HMR.

I mentioned this to a Remington rep at a show several years ago and his reply was, "It'll never happen." I had a Rem. Mod. 591 in the 5MM RM. It was a nice little rifle and shot well. The only reason I was able to sell it some years later after Rem. discontinued the ammo for it in the mid seventies, was I still had two boxes of ammo for it. The ammo was worth more than the rifle!

I wish I would have kept it. A centerfire conversion came out for it in the mid 90's and all those nifty 5MM (20cal.) bullets are now available for it. Kudos to Winchester for doing what Remington wouldn't do. Hope it sells well. I'd like to see a comparison of the 5MM RM case next to the .17 WSM, the Winchester case maybe a little bigger. Also it would be interesting if Winchester would neck the .17 WSM up to 20 cal. to see what it would do with heavier bullets? It'd certainly handle the bigger varmints better.

+1 Good Comment? | | Report
from hhack wrote 1 year 13 weeks ago

So it is a rimfire that is going to be competing with center fires? The 17 Hornet and the older 22 hornet are already sitting in this niche. I guess the real test will be if the ammo is competitively priced. It may catch on in states where varmint hunting with center fire rifles is illegal but unless ammo is cheap I personally don't see a need for this round.

0 Good Comment? | | Report
from Xman98 wrote 1 year 12 weeks ago

How does this compare to the Remington 22-250??

0 Good Comment? | | Report
from Sb Wacker wrote 1 year 12 weeks ago

A fascinating new round that will prove useful in jurisdiction's where only rimfire's are permitted.
SBW

PS THE LINK IS BROKEN

+1 Good Comment? | | Report
from Zermoid wrote 1 year 12 weeks ago

Nice to hear Savage is making it, should be accurate and affordable, will the ammo be available at the same time?

0 Good Comment? | | Report
from deadeyedick wrote 1 year 12 weeks ago

This entire website is a mess. Can't hardly post anything. that's all we neeed another .17 cal wind blower . In my opinion the .17 is way to prone to wind past 100 yards.

0 Good Comment? | | Report
from RedTick54 wrote 1 year 12 weeks ago

How fast can you shoot a BB or Pellet?

0 Good Comment? | | Report
from Carl Huber wrote 1 year 12 weeks ago

Brings new meaning to the term "I Nailed Him".

0 Good Comment? | | Report
from deerhunterrick wrote 1 year 12 weeks ago

reportly the ammo is about the same price as the .17hmr or within a few dollars. I have to say there are some still that disbelive the capabilities of the .17 cal. With 20 grain bullets these are awesome within the limits of the cartridge. Wind? Any cartridge is going to drift in a crosswind out past 100 yards. That's where experience and good marksmanship comes into play. Joe Smo doesn't walk in off the street and quarterback an NFL football team anymore then somebody that can't shoot a 2" group at 50 yards shoot sub 1" groups at 100 yards. Like taking shots at an animal at 500 yards with a slingshot. You have to be able first off and secondly know the limits of the cartridge. If they load this cartridge with 22 to 30 gr bullets I think it will serve a very good niche for varmint hunters limited to rimfire and shotgun after dark. Especially if they used the .27cal casing to fire it. I'm in for sure. but I already like the .17hmr for coyotes and many are opposed to that. but it has proven itself time & time again. It works in the right hands under the right conditions out to and exceeding 175 yards. Any improvement over those results would be welcomed by many. As for a 5mm take a look at the .204 rugar and it's performance. The right bullet for the right cartridge works anything less is just a wildcat looking for a user

0 Good Comment? | | Report
from deerhunterrick wrote 1 year 12 weeks ago

I for 1 will welcome this round. I already use the .17 hmr out to and exceeding 175 yards under the right conditions. You can't expect centerfire results with a rimfire so why would you compare the 2 rounds. How does it compare to a 22.250? lol.. About the same as a 3rd grader playing quarterback for the NFL on Monday Night Football. in case some of you didn't know what NFL was. Loaded with a 22 to 30 gr bullet these should be a great combination in a 27 cal casing. Look forward to getting one of these for night hunting coyotes in Michigan, can't wait

0 Good Comment? | | Report

Post a Comment

from Tim Platt wrote 1 year 13 weeks ago

How fast is it?

+1 Good Comment? | | Report
from mike55 wrote 1 year 13 weeks ago

Congratulations to Winchester on their new .17 WSM (don't know yet if that's how they're going to abbreviate it, someone might confuse it with the short magnum case which would be pretty hot in .17 cal), on doing what Remington should have done years ago to their 5MM Rem Rim. Mag case. It too operated at 33k psi, looked like it would have had similar case cap. to the .17 WSM and with the newer slippery polymer tipped bullets could have used a lighter bullet with a better ballistic coefficient than the old 38gr. hollowpoint. With the lighter bullet a little more powder could be stuffed in the case combined with the a newer high energy powder, could have significantly improved the down range ballistics over the .17 HMR.

I mentioned this to a Remington rep at a show several years ago and his reply was, "It'll never happen." I had a Rem. Mod. 591 in the 5MM RM. It was a nice little rifle and shot well. The only reason I was able to sell it some years later after Rem. discontinued the ammo for it in the mid seventies, was I still had two boxes of ammo for it. The ammo was worth more than the rifle!

I wish I would have kept it. A centerfire conversion came out for it in the mid 90's and all those nifty 5MM (20cal.) bullets are now available for it. Kudos to Winchester for doing what Remington wouldn't do. Hope it sells well. I'd like to see a comparison of the 5MM RM case next to the .17 WSM, the Winchester case maybe a little bigger. Also it would be interesting if Winchester would neck the .17 WSM up to 20 cal. to see what it would do with heavier bullets? It'd certainly handle the bigger varmints better.

+1 Good Comment? | | Report
from Sb Wacker wrote 1 year 12 weeks ago

A fascinating new round that will prove useful in jurisdiction's where only rimfire's are permitted.
SBW

PS THE LINK IS BROKEN

+1 Good Comment? | | Report
from chuckles wrote 1 year 13 weeks ago

Yaaaay Savage!

0 Good Comment? | | Report
from Tim Platt wrote 1 year 13 weeks ago

Faster than an Asian date?

0 Good Comment? | | Report
from hhack wrote 1 year 13 weeks ago

So it is a rimfire that is going to be competing with center fires? The 17 Hornet and the older 22 hornet are already sitting in this niche. I guess the real test will be if the ammo is competitively priced. It may catch on in states where varmint hunting with center fire rifles is illegal but unless ammo is cheap I personally don't see a need for this round.

0 Good Comment? | | Report
from Xman98 wrote 1 year 12 weeks ago

How does this compare to the Remington 22-250??

0 Good Comment? | | Report
from Zermoid wrote 1 year 12 weeks ago

Nice to hear Savage is making it, should be accurate and affordable, will the ammo be available at the same time?

0 Good Comment? | | Report
from deadeyedick wrote 1 year 12 weeks ago

This entire website is a mess. Can't hardly post anything. that's all we neeed another .17 cal wind blower . In my opinion the .17 is way to prone to wind past 100 yards.

0 Good Comment? | | Report
from RedTick54 wrote 1 year 12 weeks ago

How fast can you shoot a BB or Pellet?

0 Good Comment? | | Report
from Carl Huber wrote 1 year 12 weeks ago

Brings new meaning to the term "I Nailed Him".

0 Good Comment? | | Report
from deerhunterrick wrote 1 year 12 weeks ago

reportly the ammo is about the same price as the .17hmr or within a few dollars. I have to say there are some still that disbelive the capabilities of the .17 cal. With 20 grain bullets these are awesome within the limits of the cartridge. Wind? Any cartridge is going to drift in a crosswind out past 100 yards. That's where experience and good marksmanship comes into play. Joe Smo doesn't walk in off the street and quarterback an NFL football team anymore then somebody that can't shoot a 2" group at 50 yards shoot sub 1" groups at 100 yards. Like taking shots at an animal at 500 yards with a slingshot. You have to be able first off and secondly know the limits of the cartridge. If they load this cartridge with 22 to 30 gr bullets I think it will serve a very good niche for varmint hunters limited to rimfire and shotgun after dark. Especially if they used the .27cal casing to fire it. I'm in for sure. but I already like the .17hmr for coyotes and many are opposed to that. but it has proven itself time & time again. It works in the right hands under the right conditions out to and exceeding 175 yards. Any improvement over those results would be welcomed by many. As for a 5mm take a look at the .204 rugar and it's performance. The right bullet for the right cartridge works anything less is just a wildcat looking for a user

0 Good Comment? | | Report
from deerhunterrick wrote 1 year 12 weeks ago

I for 1 will welcome this round. I already use the .17 hmr out to and exceeding 175 yards under the right conditions. You can't expect centerfire results with a rimfire so why would you compare the 2 rounds. How does it compare to a 22.250? lol.. About the same as a 3rd grader playing quarterback for the NFL on Monday Night Football. in case some of you didn't know what NFL was. Loaded with a 22 to 30 gr bullet these should be a great combination in a 27 cal casing. Look forward to getting one of these for night hunting coyotes in Michigan, can't wait

0 Good Comment? | | Report

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