Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

Swift Scirocco II

 
LinkBack Thread Tools Display Modes
  #22  
Old 02-21-2006, 08:38 AM
POP POP is offline
Platinum Member
 
Join Date: Jul 2001
Location: CHEYENNE, WY
Posts: 1,373
Re: Swift Scirocco II

http://www.intlmidway.com/intl/eprod...eItemID=537105

This is the only midway site i can access from work. This is the International midway site. However if you go to www.midwayusa.com and plug in product # 537105 (30 cal 180 gr) or do a search for scirocco 2 they will come up. Hope this helps.
__________________
"Weatherby was too long so I nicknamed it "Bee""
Reply With Quote
  #23  
Old 02-22-2006, 04:13 AM
Platinum Member
 
Join Date: Jun 2003
Location: Hermiston, Oregon
Posts: 2,007
Re: Swift Scirocco II

I really wish swift would pull there head out of there butt and release a .257" scirocco. Hopefully it would be at least a 110g better yet a 115g or 120g. I always saw in magazines where they were "suppose" to be released during the 05 season. Well its now 06 and still its the last caliber to not be offered. I called them a couple months back and they said they were still in the designing process. They would not give any insight to what grain it would be either.
Reply With Quote
  #24  
Old 01-31-2011, 08:52 PM
Silver Member
 
Join Date: Oct 2010
Location: Montana Plains
Posts: 289
Re: Swift Scirocco II

Not a lot of data out there on the Swift Scirocco II .224 75-grain bullet.

Just got back from the range, temperature -6 F, so I wanted to know if my CZ 527 Varmint .223 Rem with 24" heavy barrel of 9" twist would stabilize them in cold dense air. My altitude is about 3300 feet. About 10 MPH wind quartering into me.

Got a best group at 100 yards of .625" and a best group at 200 yards of 1.50". Worst group was 2.625" at 200 yards.

The 10th shot keyholed a bit and was about 8" high at 200 yards, but the two previous shots of the group, #8 and #9, had 1.5" separation at 200 yards.

My loads were 22.5 grains of IMR4895 and 22.7 grains of IMR4895 in military brass. 22.7 grains was more accurate, so I will start working up to max load and see what happpens. Max load in Hodgdon data is 23.8 grains of IMR4895.

The 9" twist is marginally stable, as 8" twist rate is recommended. With a long barrel and a hot load, 9" twist should be stable. So if you have a .22-250 or .220 Swift or .224 Clark with a 9" twist rate, you will probably be OK. Guys with .223 rifles have mixed results with the 9" twist rate, from what I have gathered. The bullet is not quite as long and has a longer bearing surface than a Hornady 75-grain A-Max, so it should stabilize a bit easier.

.224 is the only caliber I have tried in Scirocco. I am sticking with Accubond in .308 caliber due to price and availability and being a very similar bullet. In .224 cal, the Scirocco is the only bonded bullet of its type I know about.

Copper fouling is usually heavy by the 10th to 15th shot, from what I have gathered, so it is probably responsible in part for the keyholing of my 10th shot. At 22.7 grains, powder is slightly compressed, but should be able to get a bit more in even with military brass. Might be best to use commercial brass if going for max loads. Bullet is seated about .050' off the lands, and I have no trouble with clearance in a CZ 527 magazine. Would probably not work in my AR-15 mags as the COL came out around 2.245" if I remember correctly.

The 22.7 grain IMR4895 load is accurate enough as is for hunting mule deer, but I hope to eliminate the keyholing, or maybe it will never be a problem as I will be hunting at a higher elevation in warmer weather for antelope and deer. -6F is colder than I intend to be hunting except for predators in the winter, in which case I use Nolser or Hornady ballistic tip varmint bullets.

The jacket is pure copper on the Scirocco bullet, which causes the excessive copper fouling. Pure soft copper is also why it opens more readily than harder gilding metal used in most other bullets. I eliminated Barnes X bullets from my short list of possible bullets due to the need for high velocity for reliable expansion. I expect shots out to 200 yards on mule deer. Guys with .22-250 or similar magnum should consider the Barnes solid copper bullet, as it will hang together at highest velocities and needs higher velocity for reliable expansion relative to Scirocco and Partition. The Scirocco II will be pitted against the 60-grain Nosler Partition as my big game .224 bullet, and final decision will be based on how it puts down a mule deer. The Trophy Bonded Bear Claw is only available in 56-grain in .224 cal, and that seems a bit light to get enough energy at .223 Rem velocities for deer size game. The Speer 70-grain bullet is not bonded, so I would consider it inadequate on a large mule deer where I need deep penetration.

So, I would say that a 9" twist barrel is uncertain for the .224 Scirocco in some cases, but if you hunt at elevation above 3000 feet in warmer weather with a more potent rifle, you might be OK, because 9 out of 10 bullets being stable at -6F and around 2600 FPS velocity in a 9" twist .223 Rem means you have lots of situations where conditions are more favorable for stability. Plus, new .223 Rem rifles can now be easily had with the recommended 8" twist rate, especially in the AR-15 platform, and with the necessary 24" barrel for max velocity.

Probably best to stay away from this bullet if your barrel is under 20" long. I'll stick with the Partition in my 20" AR-15.
Reply With Quote
  #25  
Old 02-05-2011, 12:57 PM
Silver Member
 
Join Date: Oct 2010
Location: Montana Plains
Posts: 289
Re: Swift Scirocco II

I further tested the Scirocco II .224 75-grain on a warmer day with hotter loads. Distance 200 yards. Temperature 40 F. Wind 15 MPH crosswind. Shot one fouling shot, then 2 groups of 3 shots each, then cleaned the bore. There was no indication of keyholing this time.

22.9 grains IMR 4895......1.45"

23.1 grains IMR 4895......1.2"

23.3 grains IMR 4895......1.3"

23.5 grains IMR 4895......1.8"

The test rifle was again my CZ 527 Kevlar Vamint in .223 Rem with 24" by 9" twist heavy barrel. Weaver 3.8-12x44 40/44 series aspherical scope with AO.

The Scirocco II is stable in this rifle at my expected hunting temps at an altitude at or below my expected hunting altitude. The requirement for an 8" twist is to ensure stability in shorter barrels at lower altitudes and lower ambient temps, so the suggested use in an 8" twist rifle is a one-size-fits-all recommendation for worst case conditions, I have concluded. The Lilja website states that their 9" twist match barrels are suitable for bullets up to 75 grains, and I can assume the same for CZ 24" barrels.

My seating depth is .050" off the lands for reliable functioning in the magazine. It doesn't seem to affect the accuracy to a significant degree for hunting purposes per my above results, and it prevents overpressures as well. Primers were in perfect shape with the heaviest load, which would qualify as a max load with military brass used. CCI primers used in all cases.
Reply With Quote
  #26  
Old 02-05-2011, 11:58 PM
Gold Member
 
Join Date: Jan 2005
Location: Pocahontas, AR
Posts: 909
Re: Swift Scirocco II

I am considering a 1-8 223AI with a 24" tube, that should work.
__________________
You will not make peace with the Blue Coats, you are free to go.
Reply With Quote
  #27  
Old 12-23-2012, 12:01 PM
Junior Member
 
Join Date: Dec 2012
Posts: 1
Re: Swift Scirocco II

Does anyone have data for reloading the 6.5x55 Swede with 130 grain Scirocco bullet?
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Swift Scirocco II
Thread Thread Starter Forum Replies Last Post
6.5 Swift Scirocco? ovastafford Rifles, Bullets, Barrels & Ballistics 6 08-31-2012 02:42 AM
.30 Cal Swift Scirocco 180 Gr Cordell Reloading Equipment and Components 0 11-22-2009 02:19 PM
Accubond or Swift Scirocco? william101 Reloading 32 10-02-2005 03:58 AM
Swift Scirocco Brown Dog Rifles, Bullets, Barrels & Ballistics 1 01-18-2004 04:10 PM
FS Swift Scirocco 30 cal jimmyd223 Guns For Sale 0 10-31-2003 01:59 PM


All times are GMT -5. The time now is 10:30 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC