The design and function of the AR-15 platform perfectly offers the mechanical solution which the 243 WSSM lacked in a bolt action. Each rifle will come with a rifle case and 2 boxes of ammunition – reloaders will at least have some seed brass! : 0.200 VELOCITY (FPS – feet per second) POWDER 4100 4200 4300 4400 4500 4600 Technical Data World Class Powders & Ammunition We've been part of the Australian reloading community longer than you think. A lot of modern technology helped it get its primary and supporting characteristics. It mentions specifically only “Short Action” rifles, but it isn’t an actual particular shape of brass or bullet that is proprietary. You can do this in one sizing step, same with upsizing 243 WSSM brass to 25 WSSM, however if I… Read more ». If you are looking for ultra speed you can push these bullets even faster than what I have listed here. With no comment on the 243 WSSM matter, they DID confirm that they are required to pay a royalty on all OSSM ammunition manufactured for their .300 OSSM rifles in order to comply with said patent requirements (PN  5,826,361) even though their rifles are not “Short Action”. OP. That bullet has preformed very well on elk. Nonetheless, this is the problem as I see it, and 243 WSSM is right smack dab in the middle of the mess. One of these is a Supreme load using a moly coated 95 grain Ballistic Silvertip bullet (BC .379, SD .230) at a muzzle velocity (MV) of 3250 fps and muzzle energy (ME) of 2258 ft. lbs. Never loaded for rifle (only handguns), have no rifle powder collection. The original caliber has a heritage that makes the conversion to a Super Short Magnum seem very reasonable and, generally, a pretty good idea. Good info. As far as I can tell the 243 Win and 243 WSSM have the same case capacity. I am pretty positive that far exceeds what a normal hunter or recreational shooter would put thru their barrel in a life time (in this caliber). This round is easy on recoil and hard on deer. I would like to think an easy sunset occurs on this mess and we see a surge of renewed interest in 243 WSSM and potentially making way for other yet to be named Super Short Magnum creations. The round was introduced in 2003. .243 Winchester Ballistics and Reloading by Norman Gray, Wed, September 06, 2017. .243 WSSM / .243 Winchester Super Short Magnum (Hodgdon Data Maximum Loads) … The reason that I bought the rifle that I now want to toss into the nearest body of water, was that Winchester Arms touted it to be the best thing since sliced bread. This is some of the load data I recieved from Berger 243 WSSM (COAL - 2.360" Barrel Length - 24") Bullet Powder Start Load Appr. The 223 and 243 wssm were plagued by the extreme overbore lack of performance along with the 500rd barrel life. I tweeted at Winchester earlier in the summer and they told me there would be 243 WSSM brass later this summer. By clicking the 'I Agree' button, I understand/accept and will agree to abide by the precautions and warnings outlined above. I like to keep my loads away from the highest pressures possible. The patent holder can earn his credit for leading the way and showing the innovation of design. 243 WSSM load data / 243 Win load data #12170479 07/26/17: Joined: May 2012. Occasionally, we will temporarily publish load data on this page when a bullet becomes available and is not yet listed in the latest edition of the handbook. Select your cartridge type from the drop-down list. 243 WSSM ( Winchester Super Short Magnum ) Load Data Major manufacturer Olympic Arms was quick to recognize this high performance caliber and how it fits into the AR-15 platform. It was also proven as a competition caliber in long range precision shooting before more modern fads and technology started edging in on its accolades. Start Vel. Olympic Arms produced their first 243 WSSM production rifle in 2004 and included production models in their 2005 catalog. It is still holding tight groups with beautiful performance and no erosion issues from a barrel made of 416SS. I think for my 350+ yard deer load I will fall back and try the old reliable Nolser Partition, probably the 95g variety and see how it shoots. Improved technology in propellants and the physics behind shorter, wider casings help boost performance. 240 Page Super Pouper? *Most Accurate Load C Compressed Load 1. AmmoLand Giveaway – 5,000 Rounds of CCI Blazer 9mm Ammo FREE! It boils down to politics. It does amazing things to chucks and prairie dogs. .243 WSSM / .243 Winchester Super Short Magnum (Hodgdon Data) reloading data with 178 loads. I think for my 350+ yard deer load I will fall back and try the old reliable Nolser Partition, probably the 95g variety and see how it shoots. Joined: May 2012. The 243 Winchester tolerates a wide variety of bullet / propellant combinations, making it an easy cartridge to successfully reload. 243 Winchester 243 Winchester Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. I understand they chrome lined the barrels of the first bolt action rifles put out but I never read about barrel erosion issues from any consumer. I’am thinking I might need a small base die which I can’t locate. The 243 WSSM uses a shortened 300 Winchester Short Magnum case necked down to accept a .243” / 6mm diameter bullet. In fact, some of the references used in this formula patent are from ammunition designers who often put their work product freely in the public domain, benefiting firearms and ammunition makers along with shooters. I would easily venture there are WAY more AR-15s sitting around than there are AR-10s on the market, that in just a few moments and by popping out two take down pins that AR-15 can now be converted with an upper to a hunting rifle just that easy. See target groups and more information on this 105 A-Max load. John says that, at least for a sling shooter, the .243 Win is hard to beat at long range. Has any one got load data on the Hornady 95 gain SST for 243 Winchester? I have plenty of … It is vague and rather surprising, as well as frustrating, considering that most common calibers are in the public domain and readily available for anyone to mass produce. Checked Midway on November 26, unavailable. bobnob17 OP. ( HillBillyBrass.com ), Love the 243 WSSM! This consistent performance is what reloaders have come to expect from Alliant Powder - and Reloder 17 proves worthy. Superformance delivers striking velocities in cartridges like the 22-250 Remington, 243 Winchester and 300 Winchester Short Magnum. It uses a .300 WSM (Winchester Short Magnum) case shortened and necked down to accept a .243in/6mm diameter bullet, and is a high velocity round based on ballistics design philosophies that are intended to produce a high level of efficiency. Secondly, in order to get the best burn rates and pressures from any of the propellants used, it meant it usually was accompanied by high heat. This is analogous to Freeware in the software industry, or the fact the AK47 was never patented. Max Vel. buy it by the case at MidwayUSA, http://www.midwayusa.com/product/2900243961/winchester-supreme-ammunition-243-winchester-super-short-magnum-wssm-95-grain-ballistic-silvertip, Winchester JUST and I mean JUST released a run on this ammo (I got a call earlier this week but only 8 boxes showed up from distributors not the full order – I don’t buy retail from MidWay; they recently just got their shipment too I think! Reloaders are urged to be careful not to either under or over load the .243WSSM, as this is a pressure sensitive cartridge. Hornady Manufacturing Company develops and publishes reloading data for the Handbook of Cartridge Reloading.Occasionally, we will temporarily publish load data on this page when a bullet becomes available and is not yet listed in the latest edition of the handbook. Check out Hill Billy Brass. It also consistently shoots this load under an inch at 100 yards. The loads here are my goto sub minute-of-angle accurate hunting loads. Same 55 Gr. This load was used on these long range shots. At 300 yards and beyond I'm leaning towards the 140g Nosler AccuBond load. The .243 WSSM's virtually the same as a .243 Ackley Improved. By that point we had licensed Hornady to produce the cartridge and they offered to sponsor it through the SAAMI certification process. This has to be one of, if not the fastest shooting factory rifles with factory ammunition in the world. The .25 WSSM was designed to duplicate the .25-06, and in some instance, it does. It appears that for the greater good of the caliber’s sustainability and popularity, Alexander Arms and the caliber’s creators made a selfless decision to allow it available for mass production. Posts: 1,705. 243. Ricky Ricky A, Sep 2, 2008 #1. Incorrectly reloaded ammunition can cause serious personal injury and damage to the firearm due to excessive pressure. Great for feral hogs also. Load Data. The 243 Winchester Super Short Magnum or 243 WSSM is a rifle cartridge introduced in 2003. They said the same thing about 25WSSM earlier in the year and sure enough they produced some and I was able to acquire some via Graf and Sons. In either version, the .22-243 gives higher velocities than hand loads for the Swift and performs similarly to the .223 WSSM. VDC Armory LLC ( www.vdcarmory.com ) is offering up to six custom 243 WSSM rifles, using hand lapped barrels from Accuracy Systems, Inc.. Only six will be available this year (2016). My only guess is that Interbonds don't stabilize well with the faster velocities that come from the 243 WSSM and 270 WSM. Instead, they just hoped to retro fit it into existing platforms. On the other hand, every load I tried with the 75 grain Hornady V-Max shot well. USA -(Ammoland.com)- To begin with, there are statements in this article that are purely my own, and my opinions are obvious and blatant. Click Here to download Sierra Bullet’s complete .243 Winchester Load Map as a .pdf (Adobe Acrobat) file. So, it’s coming…soon…maybe? I neck up the 223 wssm cases for my 243 wssm and have shot thousands for rounds…..they are less expensive than the 243 Wssm cases. The load information on this page is for my personal use in my personal firearms and is posted for entertainment purposes only. A few people knew I was researching this article but in reality I doubt very seriously I had any influence and it was just good timing… Read more ». Understanding that in regards to the availability of 243 WSSM now makes an interesting point. The 243 WSSM uses a shortened 300 Winchester Short Magnum case necked down to accept a .243” / 6mm diameter bullet. Winchester created the 243 WSSM and introduced it in 2003. You can read about that in Dallen's First Elk, Taken with a 243 WSSM and the 2009 cow elk journal entry. The most suitable powders for the .243 WSSM are the medium burning 4064 and Varget for light varmint bullets while medium slow burners such as H4350 and IMR4350 are the optimum choice when loading 85 to 105 grain bullets. The overwhelming complaint expressed about this round was how hard it fed or failed to feed. Great Accuracy! .243 WSSM (Winchester Super Short Magnum) - Manufacturer Loading Data. anyone out there that can enlighten/update the rest of us on the likelihood of the “sun-setting” of this patent? My understanding in this case was that something had to be voluntarily released by Alexander Arms (who trademarked it – NOTE, not patented) so that ammunition could be mass produced by various and multiple manufacturers in order to make the caliber more popular and standardized. .243 WSSM / .243 Winchester Super Short Magnum (IMR Data) reloading data with 52 … Right or wrong, that is what is rumored. Ballistics shine as well. Re: 25 WSSM I've got a 243 WSSM AR for a match gun, the 1-10" twist pretty much limits you to 90 gr. NSW Australia. I tried four different powders and many different seating depths. He turned me over to the production manager and he never gave me a response which I took as a no. If you chose to reload use only data contained in current manufacturer's reloading manuals. Not too long after that, they were sued for patent infringement. It easily can bring down a Bull Elk at 350yds (Youtube has shown us that). At any rate, time has proven that it was a wise decision and we have never regretted it.”. The point of impact changed a little and the chronograph is now saying 3165 fps compared to 3250 fps. I thought the Hornady 85 grain InterBond might be the ticket. I am looking for suggestions in .243 winchester for a 1 in 9" barrel. 243 WSSM ( Winchester Super Short Magnum ) Load Data Major manufacturer Olympic Arms was quick to recognize this high performance caliber and how it fits into the AR-15 platform. His current pet project includes a new website promoting the Modern Sporting Rifle like it truly is intended to be with ARHunters.com & social media by the same name. The light recoil and flat trajectory makes precision far easier in my opinion. I also believe the WSSM has higher chamber pressures so I get to some extent why the WSSM data seems to have higher velocities. Reload only after proper instruction and in strict compliance with instruction and data contained in current manufacturer's reloading manuals. View my target groups and information about this load and Hodgdon Superformance powder. 223 Remington 60-62 gr. But 800 yards and under, it hammers! I will rebarrel it to the same when I shoot it out. is 0.242 in diameter. If you're unsure, or just want options, check as many boxes as you'd like. Modern propellants are capable of getting burn rates and pressures at lower temperatures. ( www.hillbillybrass.com ). I am very comfortable with this 80g TSX bullet on elk out to 350 yards. I'm working on a load … I am sure arguments can be made against this next statement, but the introduction in 2003 of the 243 WSSM (Winchester Supper Short Magnum) gave the round about a 10% boost in key performance areas of velocity, accuracy and effective Range. Wrong marketing and too many short mags to choose from all at the same time. Click "Get Data" to view results. Powder of choice for 270, .30-06 and .338; Excellent metering ; Accurate and consistent in most medium caliber cartridges ALL 58 gr 62 gr 70 gr 75 gr 77 gr 80 gr 85 gr 90 gr 100 gr. If people desire a .243 AI chamber, then there's a reason for the .243 WSSM. I have had several cases on order for MONTHS (like close to 12 months) and still nothing. I have since found a tip for what seems like a good source for brass if you are a reloader – I am not. The ammo designer probably spent a lot of time designing the round, but gun makers didn't do enough to allow it to mechanically function. Model 1885 High Wall - Bases, Rings, Triggers Etc. 243 Win 58 gr V-MAX® Superformance® Item #8343 | 20/Box . .243 WSSM (Winchester Super Short Magnum) Load Data Major manufacturer Olympic Arms was quick to recognize this high performance caliber and how it fits into the AR-15 platform. Winchester's purpose was to ensure that there would be ammunition on the market (and that's a good thing). Two of them have 18” hand lapped stainless steel threaded barrels and four of them have 20” hand lapped stainless steel threaded barrels. It is a little fickle to hand-load for however. Powders include Hodgdon, Winchester, IMR His credit for leading the way and showing the innovation of design my loads away from the highest pressures.. 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Wall - Bases, Rings, Triggers Etc earn his credit for leading way. Hillbillybrass.Com and so you should be able to reload all you want with!