SK Pistol Match

I recently bought some SK Pistol Match .22 Long Rifle ammunition.  (Not SK Pistol Match Special.)   When I unpacked the ammunition, I noticed the ballistics data listed on both the 500 round cartons and the 50 round boxes showed the muzzle velocity as 328 m/s.  According to the ballistics data on the SK website SK Pistol Match was advertised as having a muzzle velocity of 286 m/s or 281 m/s depending on the pistol barrel length.  

I purchased this SK ammunition thinking it was a standard velocity round, roughly equivalent to Lapua Pistol King and CCI Standard Velocity.  If SK Pistol Match actually has a pistol muzzle velocity of 328 m/s, that is a high velocity round and not the optimum choice for use in competition in my pistols. 

Does anyone know if the muzzle velocity of SK Pistol King in either a 150mm or 120mm pistol barrel is 286 m/s or 281 m/s, or is in fact 328 m/s?  Perhaps the boxes were mislabeled and are quoting a rifle length barrel velocity.  

Thanks,

TAB

Doesn't 328 m/s equate to 1076 fps?
If so isn't that awfully close to CCI standard velocity?

expendable wrote:Doesn't 328 m/s equate to 1076 fps?
If so isn't that awfully close to CCI standard velocity?

Yep, nothing wrong with that ammo.

roughly 1080 same as most standard velocity

Isn't CCI Standard's quoted velocity at 1070fps from a test rifle barrel? 

1070-1080 is standard velocity measured from a rifle barrel.  1080 from a 5" pistol barrel is much hotter.  If this SK is 1076 from their pistol test, it's too hot for my use.  If it's 1076 from their rifle test, it's equivalent to CCI Standard and I'm good with that.

I was wondering why SK posts one value on their website (quoted with pistol barrel lengths) and a different value on their packaging.  Perhaps I'm over thinking the issue, but I'd rather confirm one way or the other before I mess up a pistol with ammo that is too hot.

Thanks for your continued discussion,

TAB

If it is product 420114 the velocity is 938 fps or of a 5.9 in bbl. http://www.sk-ammunition.com/en/products/shot-cartridges.html

Seems you have conflicting info.

Simple solution chronograph it. If you are concerned about shooting it through your gun then use a different gun first.

- Dave

dear Tab:

what firearm are you using?

I have a number of high cost firearms and have absolutely no qualms using SK pistol match in any of them. 

For what it is worth, in my target pistols, I could nto discern a accuracy improvement for most of the medium to high cost ammos. 

In my Winchester 52c competition target rifle, SK pistol match and SK pistol match special as two of the top most accurate ammunitions in that rifle. 

go ahead, give it a try, you will know if it is hot but I can assure you that your firearm, as long as it is reasonably new, will be able to handle it. 

Regards,
Cranky

Wobbley,  No product code on the box. Definitely conflicting info.

Dronning,  Yep, a chronograph session is in order.  Just looking for the right answer before I get to the range.  I'll test in both pistol and rifle just to see what it does.

CrankyThunder,  A 1975 High Standard Victor, recently acquired.   Conventional wisdom is the higher velocity ammo is tough on High Standards and MAY lead to a cracked frame.  Figured no use taking that chance.  I ran a Ransom Rest test with CCI Standard, Federal 922 Match, and Lapua Pistol King at 25yds.  The Pistol King was marginally better than the Fed 922, both shot quite a bit better than the CCI Standard.  That test was in a different pistol.

Thanks all,

TAB

Dear Tab:

I do not include CCI sv as medium priced target ammo and through my tests, I have duplicated your results.  CCI SV consistently performs less accurate then all (what I have tested) medium priced subsonic ammo. 

I acknowledge that the high standards have a crack of doom issue that is beyond my knowledge.  I suggest you post this on rimfire central because there are some really good high standard people that know lots more then I do over there.

Sincerely,
Cranky

I think it is interesting that Midway has the SK rifle match @1050 fps. Timing wise it was even more interesting because they just notified me it was back in stock.
http://www.midwayusa.com/product/2577315741/sk-rifle-match-ammunition-22-long-rifle-40-grain-lead-round-nose?cm_vc=ProductFinding

TAB:

Don't worry about it too much.  Those numbers are probably the difference between a 24 to 26 inch test barrel (328 m/s) and a 5 to 6 inch pistol barrel (286 m/s).  Most manufacturers use rifle length for velocity numbers; hence the 1080 fps range for standard velocity .22 ammo. In general this same ammo would be in the +/- 935 fps range for pistol length barrels.

You are definitely overthinking this. Put in the same effort into training and your scores will soar.

Both are ok in your pistol

Pistol Match, 938fps in 5.9" bbl
Pistol Match Special, 955fps

load it shoot XXXXXXXXXXXXXxxx, end of story

I use CCI SV in my High Standard, and so does everyone else I know that has one.  There is a shooter at my club that shoots an extremely rare High Standard "Space Gun" and he runs CCI SV.

Go shooting and worry no more.

Received an e-mail today from Herr Christoph Tolonitz, Sport Service Manager at Nammo Schonebeck. 

The muzzle velocity quoted on the ammo boxes I have is in fact for a 660mm rifle barrel.  He also noted that as of 15 March, they were no longer printing muzzle velocities on packaging.

Now we have a definitive answer.

Thanks to all who responded.

TAB

For those of us crippled by Congressional ineptitude on the metric conversion, that's just a bit shy of a 26-inch barrel.

I read somewhere years ago that some .22 LR starts losing velocity in rifle barrels starting about 18 or 20 inches down the pipe.