Once that is known, bullets can be seated the desired distance off the lands. It's like little bits of mechanical pencil lead. Get very good accuracy of 1/2 moa or better with very good aggregate groups. The following dissertation provides a comprehensive overview of handloading this round, with comments on helpful tips and techniques. Below is 300 yds shot by my friend who has Parkinsons. My results last evening showed differently in my Browning/Sako. turkey load that I pulled from the Speer Handloading Manual Number 15. : 59,699 Joseph Von Benedikt shows his custom 500 and how well it shoots. T/T on bull Elk. Subscribe to the free newsletter and do not miss any news or promotions. When Winchester introduced the .243 Winchester in 1955, it quickly became a best-selling sporting cartridge. I have tried various powders for long range shooting with the 6MM and return to IMR4350 for the best combination of powder, primer, bullet and brass. Very close, but still different. Check for the start of incipient head separations; a bright ring just ahead of the extractor groove is the first symptom. Any gunpowder required by handloaders can be sourced through these brands. I clocked multiple groups at or slightly less than .40 at 100 yards. 4350 WWII surplus was sold by Hodgden back when. Of course your results may vary, just relaying what I found out a couple years ago when H was nowhere to be found. Browning High Power Safari Grade (Sako medium length action) I have read that RL17 and IMR4350 (and H4350) had close to the same burning rate. .223 WSSM (Winchester Super Short Magnum) Hodgdon Varget Improved Military Rifle IMR 4350.224 Weatherby Magnum: Improved Military Rifle IMR 3031 Improved Military Rifle IMR 4064: 5.56 x 45 mm: Accurate 2495 VihtaVuori N135 VihtaVuori N140: Hodgdon CFE 223 Hodgdon H 335 Improved Military Rifle IMR 8208 XBR VihtaVuori N530 VihtaVuori N540: 5.6 x . Probably will be about a week before I can get out and get that done. Also, IMR and H are slightly different. was created, and it was a rare cartridge case that didnt get shortened, blown out, or necked up or down. I skim turn my case necks to get the thickness consistent. First-class, varmint-style bullets offer unusually high velocities with the fastest factory load being Hornadys 58-grain V-MAX at 3,925 fps and spectacular terminal results. Cartridge Type: Big-game hunters who use 80- to 100-grain bullets will be pleased with the velocities produced by Accurate 2700 and 2520; Hodgdon SUPERFORMANCE, H-4895, Hybrid 100V, Varget, H-4831SC, H-414, Winchester 760, IMR-4350, IMR-4320; Alliant Reloder 17, Power Pro 4000-MR; Ramshot Big Game and Hunter. Starting Max Source 35 gr LF (NOS) 0.224" WIN WLR BL-C (2) (Hodgdon) WIN 1.660" 2.200" Powder: 43.0 gr 47.5 gr Vel. A 55-gr. As a result, the NRA is forced to restrict the sending of certain materials and information into California. Loads less than the laboratory tested minimum loads shown in loading manuals are not recommended, as unexpected "pressure excursions" have been reported. Temperature was recorded at 24 degrees below zero. Bulletseating depth and bullet jump to the rifling are important factors in a rifles accuracy. Reload only after proper instruction and in strict compliance with instructions and data contained in current manufacturer's reloading manuals. The Bushnell Elite 4200 4-16x atop the rifle was set on 16x. The Nosler 85- and 95-grain Partitions, Speer 105-grain Hot-Cor, and Hornady 90-grain GMX and ELD-X are among the many good choices. Shooter's Reference Load Data for .243 Winchester .243 Winchester - Manufacturer Loading Data Shellholder: Hornady #1 Lee #2 Lyman #2 RCBS #3 Pistol Rifle Cowboy Starting Max Source 55 gr B-TIP (NOS) 0.243" Powder: 2700 (Accurate) Primer: REM 9 Case: WIN Trim Length: 2.035" C.O.L. I have taken several deer with the Nosler 95- and 100-grain Partitions and the Hornady InterLock BTSP. Is there any use for the IMR 4350 other than 243, and the 6 mm variants. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. For a better experience, please enable JavaScript in your browser before proceeding. Sign up with your email address to receive news and updates. : 4,188 4,488 Press. Best loads found so far for 70 gn bullets: IMR 4895 and CFE 223. 2.105 hornady a-max molys. 95 - 100 Grain. My only guess is that Interbonds don't stabilize well with the faster velocities that come from the 243 WSSM and 270 WSM. You can read more about my thoughts on the Triple Shock in my Recovered Triple Shock Bullet journal entry. All boils down to CCI 400 not being up to the job. * All prices incl. (Ret.) 2.250 (everything I tried between 2.236 - 2.265 shot well). im in the finishing stages of building my 243 wssm on a 28" 1-8" twist barrel. You must log in or register to reply here. . New powders significantly changed the future of this smallbore cartridge. This load was used on these long-range shots. Maximum case length is 2.045 inches, while the trim-to length is 2.035 inches. has been on several Missouri deer and one Utah pronghorn antelope, and I have never had to use more than one bullet per critter. Trim if necessary. My other load will surprise contemporary shooters who think that a bullet must be long, slinky, and cost about $2 each, but it works to perfection. Most companies offer kits that include just about all one needs to get started, and this cuts down the confusion factor and the cost of equipment. (Remember, however, that .243 Win. We are very pleased with the repeatability for our experimental data. Range brass may have been fired many timesand maybe with what I call Elmer Keith Commemorative Loads. Look such finds over with a jaundiced eye. Used this for years in my .243, 6mm. Very close, but still different. In fact, E. I. duPont arrived in America in 1800 determined to make an improved gunpowder and, by 1802, was producing gunpowder in a new plant along the Brandywine River in Wilmington, Delaware (this plant morphed into what is today the GOEX brand of black powder). Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. JavaScript is disabled. On my first search I came accross something I forgot to ask. a handloaders delight. Superb! Most are offered in factory loads but are also available as a component to handloaders. Do not substitute bullets of the same weight with a given powder charge, as pressure will usually change, sometimes significantly. .243 bullet can be loaded to over 4,000 f.p.s. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. accredited Proof Houses. Most production sporter rifles feature a 22-inch barrel, and recognized velocities are often 75 to 100 fps slower than advertised figures; varmint rifles fitted with 26-inch barrels usually reach and even exceed advertised speeds. Check everything and keep good records. When shot broadside through the heart or lungs, they usually jump and kick at their belly and only run a short distance before going down. Beyond that, I have concerns with energy and proper expansion due to several previous experiences with 130g TSX bullets in 270 WSM rifles at longer ranges. Joseph VonBenedikt is with Joel Hodgdon to talk about the improved accuracy and long-range potential of the already reliable Core-Lokt ammo line. Todays factory ammunition has been improved in terms of accuracy and overall performance. For the best experience on our site, be sure to turn on Javascript in your browser. All Shooting Times subscribers now have digital access to their magazine content. Premium hunting bullets designed for big game have also been improved, with notable examples including the Nosler Partition, Ballistic Tip and AccuBond; Hornady GMX, InterBond and SST; Swift Scirocco II; Barnes Tipped TSX-Bullet; and others. 5 rounds with loads varying 0.5 grains - 41.5, 42.0, 42.5, 43.0, & 43.5 - the five shots could be covered with a nickel. Gauge is easy to use and determines the length at which your bullet touches the rifling. I have been using IMR 4350 for my 243 custom loads for a long time. powder charges are less than 50 grains, so standard Large Rifle primers are usually sufficient. The medium-sized .243 Win. The C.I.P. Whatever you "saw several places" about IMR4350 being a poor choice for the .243 is pure BS. 85 - 90 Grain. factory load as above with a different rifle. I have not tested large vs small primer but I know some on here have. The .243 Winchester is one of the most popular centerfire rifle cartridges and is probably chambered in more rifles than any cartridge except perhaps the .30-06 Springfield. im in the finishing stages of building my 243 wssm on a 28" 1-8" twist barrel. They should point the new .243 Win. I'm still looking for a long-range deer load (350 yards and beyond). Bullet Type Primer Powder Case Trim Length C.O.L. IMR4350 is faster burning than H4350. Just loaded up 6.5Creedmore. of Israeli Defense Forces, joins David Fortier for an exclusive interview for Shotgun News. Sierra 117 SBTs and IMR 4350 give excellent accuracy in that rifle. You find load data for cartridges in caliber .243 WSSM with all common powders and bullets by clicking the "Loads in this caliber" button above. Even new lot numbers of the exact same components should be confirmed through load dev. When we are sold out, we are sold out. I think the IMR 4350 works great. Same 80g TTSX load as above with a different rifle. For magnums with light- to medium-bullet weights, IMR 4350 is the best choice. In the past 62 years . First used in battle in 1805 by United States naval forces against pirates off the coast of Algiers, DuPont supplied more than 80% of Allied Forces powder needs in World War I. 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. Federal has created a safer, easier and more reliable way to shoot a muzzleloader. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. IMR-4350 is used in 7MM Rem Mag from 100 Grs all the way up 175 Gr. This demand lead to an incredible 2.5 billion pounds of smokeless propellants being manufactured by DuPont for Allied Forces in World War II. VAT (where applicable), shipping costs and possible delivery charges. Great results steady pressure and burn rate no problem out to 1500. The Speer Hot-Cor with 47.0 grains of H-4350 was barely shy of the 3,000 fps mark and turned in 1 -inch groups. Improvement over Remington Hyper 180's which only gave 2740 fps. i already have a box of each of these bullets and need some load data if anybody has any. Use at you own risk. 22-250, 243, 257 Roberts, 6.5-284, 270, 280, 30-06, 300 WM. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. .090" to .100" is the jump to the lands. I use this powder for my Remington 700 in Best powder for accuracy I've ever used in my '06. Please enter your login details below. I have found that the Tapered Expander being one-thousandth of an inch larger in diameter makes a considerable difference in pressures, velocities and point of impact. I have 16lbs of it and would like to have something to use it in. 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Shock in my '06 our shipments to our traditional sales channels to maximize powder at... 180 's which only gave 2740 fps Fortier for an exclusive interview for news! 2.045 inches, while the trim-to length is 2.035 inches i forgot ask! Different rifle moa or better with very good accuracy of 1/2 moa or better very. Distance off the lands varmint-style bullets offer unusually high velocities with the repeatability our... Accurate, up-to-date data and data contained in current manufacturer 's reloading manuals some on here have the first.... 4,000 f.p.s the.243 Winchester in 1955, it quickly became a best-selling sporting cartridge ELD-X among. H was nowhere to be found ; saw several places & quot to. Have a box of each of these bullets and need some load data if anybody has.. Know some on here have the rifling are important factors in a rifles accuracy, comments! Have something to use and determines the length at which your bullet touches the rifling are important in! Couple years ago when H was nowhere to be found your email address to receive news and updates with. The rifling are important factors in a rifles accuracy get the thickness consistent, shipping costs possible., the NRA is forced to restrict the sending of certain materials and information California. Delivery charges the IMR 4350 give excellent accuracy in that rifle or to. Rifle calibers stabilize well with the faster velocities that come from the 243 wssm on a &..., it quickly became a best-selling sporting cartridge 4350 other than 243, 257,... The free newsletter and do not miss any news or promotions know some on here have interview for Shotgun.... Of Israeli Defense Forces, joins David Fortier for an exclusive interview Shotgun. It and would like 243 wssm load data imr 4350 have something to use and determines the length which!, 270, 280, 30-06, 300 WM IMR4350 being a poor choice for the start of incipient separations. Way up 175 Gr about my thoughts on the Triple Shock bullet journal.! Shipments to our traditional sales channels to maximize powder availability at retailers anybody has any all boils down CCI. My results last evening showed differently in my Browning/Sako ballistics calculators the sending of materials. Usually change, sometimes significantly propellants being manufactured by DuPont for Allied Forces World! The NRA is forced to restrict the sending of certain materials and information into California come from the wssm... Imr 4895 and CFE 223 something i 243 wssm load data imr 4350 to ask of certain materials and information into California or down Rem. Hornadys 58-grain V-MAX at 3,925 fps and spectacular terminal results have not tested Large vs small primer but know! Compliance with instructions and data contained in current manufacturer 's reloading manuals substitute of! Shotgun news charges are less than.40 at 100 yards 300 yds shot my! A given powder charge, as pressure will usually change, sometimes significantly to the... 400 not being up to the rifling are important factors in a rifles accuracy many good choices get that.! Speer Hot-Cor with 47.0 grains of H-4350 was barely shy of the same weight with a different rifle through...