document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 7mm Remington Magnum ~ 150 Grain ~ Trajectory Chart. We have an article on Backfire that goes a bit deeper into long-range hunting cartridges and bullet selection. 223 Rem 53 gr. I reload, and finding 300 PRC and 6.5 PRC cartridge cases from Hornady or Lapua has been as you say unobtanium. What barrel length has Hornady created the 7mm PRC for? I just completed my 7PRC build, and have started testing. The 7mm Rem Mag is available from 139-175 grains, while the .300 Win Mag is available anywhere from 15-230 grains. The data in the following table contains averages for each cartridge. Now im gonna say this , without reloader 26 powder I would have no need to own this 6.5prc, this powder is like magic. I currently shoot a 300 Win Mag. They show how a 7mm with a 168 Berger has more energy down range than a 30-378 weatherby with a Barnes. As you can see from the above table, the 7mm PRC is most similar to the Gunwerks 7 LRM. Can you tell me which suppressor you are using? There would be 226 inches drop at 1000 ft elevation compared to 207 inches at 8000 ft; and 52 inches deflection versus 40. The Barnes bullet loses velocity at twice the rate of the VLD! Remember, they dont show you the times it didnt work. I quickly saw that the 4 fewer grains of case capacity in the 7 PRC made these powders not ideal. Well, that would limit most hunting rifles to between 150 and 400-yards. Mountan goat taken by the author at 575 yards with a 15 mile per hour crosswind. We've measured the reference system to be on the order of eight inches at 1000 yards, but because of its exponential dependency on time of flight the 1500 yard drift could be as much as five feet! How to Sight in a Scope - Step by Step Guide. Every hunter needs to read this and understand the real limitations of their ammunition. Seriously, its by far the nicest die set Ive ever ownedand Ive tried just about every brand out there. The ballistic data below was calculated with a Hornady 180gr ELD-Match 7mm bullet fired at . The heavy weight 7mm projectiles can be used on the lightest of game through to animals weighing up to 320kg, producing fast clean killing out to 1000 yards. H1000 ran out of space for powder before I reached max velocity. Looking forward to seeing what the 7mm PRC can do by comparison. I have been saying for years a lot of the 2.5 inch cases would have been better off reduced to 2.250 2.3 inch .I honestly think the 26,27 and 28 would have hit the money had nosler gone that way . Well done mate , wont 7wsm do the same?? 7mm Remington: SP: 203: 2447: 2330: 7mm Remington These guys have 7mm rem mags taking elk at 900+ yards. Someone forgot the grand daddy of 7mm mags! Let me know! With the high BC of some of the 7mm bullets, ballistically this 7mm PRC will outshine most 6.5mm and 30cal cartridges. Figure 2. Please consider including this in future. For i need a good quality rifle that can last me a long time as i am going to have it imported to Australia, and before i forget i am left handed. This is great. Did you supply or install the muzzle device or did you get one from Preferred Barrels? A bullet with a BC of 0.400 will drift over 40 inches at 700 yards in a 10 mile per hour crosswind. .460 Steyr .416 Barrett .408 Cheytac .375 Chetac etc. Starline Brass has plans to produce these cases in the future. He has managed multiple gun ranges, and has hunted around the world. Save my name, email, and website in this browser for the next time I comment. Thank you for your efforts and info on this. Part of that preparation is understanding, in simple terms, the external ballistics of a typical long range shot. Trajectory for Custom .284 7mm Mag Ammo #4550 at 3000 Feet per Second, Ballistic Coefficients of: 0.545 0.515 0.515 0.515 0.515, Velocity Boundaries (Feet per Second) of: 2200 2200 2200 2200, Wind Direction is: 3.0 oclock and a Wind Velocity of: 10.0 Miles per hour, Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0, The Firing Point speed of sound is: 1120.27 fps. Better to pass on a questionable shot. Im hunting with this cartridge with 145 gr TTSX on red stags till 250 kg untill 300 m: So please keep letting us know how it works for you. do you know the 7mm Blaser Magnum? Now, I either need to find ammunition to shoot, or new brass. 5/8 to 1 groups at 500 yards. Ive got it sending the 162 grain ELD-X 3200 FPS. Shortening the H&H case to a length of 2.500 inches, and using a 25-degree shoulder, the 7mm Remington Magnum has an overall cartridge length of 3.290 inches. But keep in mind she kicks more than the .308 and is harder on barrels, but is a nice compromise between the 308 and 300 Win Mag. How do you think it will shoot the Barnes 168 gn LRX in case this new lead ammo ban goes through? You think they will come out with a 7mm Western? Im not sure that muzzle velocity would have helped this discussion, though. While the 7mm 168 grain VLD would only need 3100 fps at the muzzle to match that 2000 fps velocity at 1000 yards. The heavy-for-caliber VLD bullet's are the only readily available high BC bullet's that have been documented to ethically perform at long ranges on game animals, and the BC range on those bullet's ranges from 0.550 to 0.685. Youre also not going to shoot as well on a moving animal. JavaScript is disabled. I do reload and my rifle seams to like 70 grains. This is for academic purposes only. But what are the flattest shooting rifle cartridges? A rule of thumb I use is if an animal is walking, shots need to be twice as close. There are 100s of different 7mm Rem Mag factory ammunition loads and bullets to choose from in Shoot! People may argue that the 7mm STW has come and gone, but with the PRS-ELR hybrid competitions becoming more common, even range directors like Scott Satterlee admit the 7mms are the ones to be on the lookout for, going forward. Unfortunately, as hunters we have other limitations that force us to settle for equipment with lower BC values and muzzle velocities. It's like these other guys said, if you throw a small rock it goes really fast, but not very far. So, a bullet's initial velocity (muzzle velocity), and its shape (Ballistic Coefficient) are what determines its drop. Nice informative article. To optimize performance of the 7mm RUM, Remington engineers produced a chamber design utilizing .400" (10mm) free bore. Decreasing wind deflection is a very important part of precise long range shooting. The numbers for hunting bullet's usually range from 0.200 to 0.800 with most falling in the 0.400 range. Its certainly true that bullet/load selection will make a big difference. lb Muzzle Velocity ft/sec. A good laser rangefinder is a tool, and if it isn't used properly it won't yield good results. I also received some information from a gentleman in Canada who built a 7PRC. Up and down winds can be tough to deal with because of difficulty in reading mirage, or the terrain can be hidden. If I add to that a gusty 25 mph wind, Im not shooting past 200 yards. It is intended for long-range shooting due to its ability to utilize high BC bullets, and is also uniquely suited for hunting large animals such as elk. The higher the number, the better down range velocity retention. This September I was able to hunt mountain goats with Beaver Foot Outfitters in British Columbia. It has a length of 2.035 inches, 2.80 inches overall, with a 1:9.5 twist and a large rifle primer. So, the crosswind velocity and the bullet's time of flight will determine how much it is deflected in the wind. Though the sub-quarter MOA precision and low ES and SD are not guaranteed, they are the norm. Still a cool round for someone first using a .284 round. The second is errors in ranging and wind doping. He is a well-known entrepreneur, having started many successful online brands, and lives in St George, Utah. The aim ballistically for Hornady with the 7mm PRC, is for a cartridge that will fire a 180gr 7mm bullet at around 2950 to 3000fps. Obviously Hornady makes dies for the 7 PRC, but I personally am not a fan of their dies. I always run a suppressor would like to see 20 with suppressor vs 24 with break. I want this to be the best ballistic trajectory calculator out there. Jim, nice summary on the 7PRC. N560 offers some of the best velocities without a compressed load. Awesome article and information. While I was thinking that the 7 prc might be the way to go, Im just going to re-barrel my 7mm weather with a faster twist! When it gets mailed to you, you screw it on and you have a 7 PRC! Windage differences are still within 2 inches. However, hunters who choose to use gear that does not meet this standard are often forced to either make an unethical shot or to pass up shot opportunities when the elk isnt turned the right way. The PowerRank is an estimation of the cartridge power. The specified twist rate for each cartridge dramatically impacts the ability for a firearm to spin a bullet fast enough to stabilize a long bullet in flight. Here is my info: 3040 FPS, 160 accubond at .531 b/c, 50 degrees and 5000ft. For instance 180 grain bullet out of a .30-06 will have a range of numbers even if the MV is the same, as you can have bullets like VLD, spitzer/hollow point boat tail, flat base, and round nose bullets all found in factory loads. Sedalia, MO 65301 Every effective range calculation will, by its nature, be only a broad approximation. The time of flight is dependent on shape (BC) and initial muzzle velocity. We don't need to do math, we'll just use one of the many ballistics programs that are availableif you are interested, try the free online program I put together atwww.gseven.com. I was about to embark on a 7 Saum build in a long action to use the longer, higher BC bullets. Im still working on a load. On that same goat hunt, I missed a longer shot because I didn't read my terrain perfectly, and an updraft caused me to shoot right over his back. Obviously, there are many technical differences between the two, but they do fill a nearly identical hole in the market. Just wondering. Note that with these loads, I switch to a standard large rifle primernot a magnum primer. 61.6 grains H4831sc. But wait, there's more. Its an incredibly popular cartridge, but over time, I expect the 7 PRC to overtake it.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'backfire_tv-box-4','ezslot_7',175,'0','0'])};__ez_fad_position('div-gpt-ad-backfire_tv-box-4-0');if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'backfire_tv-box-4','ezslot_8',175,'0','1'])};__ez_fad_position('div-gpt-ad-backfire_tv-box-4-0_1'); .box-4-multi-175{border:none !important;display:block !important;float:none !important;line-height:0px;margin-bottom:15px !important;margin-left:auto !important;margin-right:auto !important;margin-top:15px !important;max-width:100% !important;min-height:250px;min-width:250px;padding:0;text-align:center !important;}. CHEERS!!! Thats one flat shooting load considering we sighted-in the bullet to impact only 2.37 inches high at 100 yards. Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. Even fairly experienced reloaders sometimes struggle to get reloaded brass to fit properly into the rifle. Here are the ranges for a 190gr A-Tip Match in a 27in 7.21 Firebird at 3240fps: 1900fps: 1250yd The 7mm Precision Rifle Cartridge is a long-action centerfire rifle cartridge designed to shoot 180 grain bullets at 2,950 fps. Thanks. Winchester told me they arent planning a series. 7 PRC would be a nice step down in recoil from a 300 win mag as long as you choose a lighter bullet. And shoot 168 Barnes tipped triple shock bullets along with Berger VLD at same weight and load. Little things that you may never have noticed can make a shot fail if you are really pushing the limits. He has managed multiple gun ranges, and has hunted around the world. Still a decent amount of case capacity left. If you hunt and want to shoot at a longer range, you may be wondering what the effective range of a rifle cartridge is. 24 is the reference data from Hornady, but I have a 20 barrel and am still getting nice velocities. Since this new cartridge has been announced, Ive talked with my contacts at many of the major rifle manufacturers and have been surprised by how many of them are extremely frustrated with working on PRC chamberings in their rifles. If the 7 PRC has significantly more recoil (which your chart has it showing about 25% more) then I dont know that 280AI will be greatly affected for hunters. Thread starter redneck watchdog; Start date Dec 8, 2011; Help Support Long Range Hunting Forum Become a supporting member. If its a can that takes a threaded muzzle device or a QD mount then who installed the device and did you time it for minimal POI shift? Testing 160-168 Gr bullets. Do not rely on my anecdotal testing for your rifle. But with a TBAC 7 ultra on a Fierce CT rival. Unfortunately, the mechanism that causes wind deflection is not quite as easy to understand as gravity drop, but I will make an attempt at an explanation. Heres what I found. If its foggy or rainy out, the clarity of your sight picture will limit how well you can shoot. Now, if we could just shoot a bullet with a BC of 0.800 at a muzzle velocity of 4000 fps, we would have an awesome long range hunting round! While I like and support new cartridges, does the PRC provide anything new? Where can I get 7 PRC brass? Keep it up! Be cautious when rebarreling a rifle into any of the PRC cartridges. Hopefully more options than what the 6.8 Western. Here is the above load showing the trajectory out to 500 yards based on those optimum sight settings: At 500 yards this bullet is only 29.14 inches low! I actually found RCBS to have the dies. Sighting-in a hunting rifle to hit a certain number of inches high at 100 yards (or 100 meters) maximizes the point blank range of the rifle and cartridge and is superior to zeroing at a fixed distance like 200 yards. Nice build Jim. ballistics app/software that you can understand and use in the field (either target shooting or hunting). The effective range of a bullet can be measured in different ways because it depends on what the bullet needs to be effective at doing. The 7mm PRC was approved by SAAMI on June 7, 2022 and the public introduction was released on June 16, 2022. Personally my mind goes towards hot rodding medium-to-heavy-for-caliber monos in the 150-175 grain range at 3200 -> 3000+ for long range expansion on game. Its important to educate yourself about 7mm Rem Mag Ballistics, especially for long range shots, because not knowing how your 7mm rem mag load performs at extended ranges could easily result in a miss. Just like shooting near dawn or dusk, or shooting into a glare. Thanks again for the info. RCC brass is the only place that has it, but the prices are wild at $6 per piece. *Casing image above is an artist rendering and not a real photo of 7mm Remington Magnum Ballistics cartridge. Red Oak, White, or Chestnut for Deer Herd? Hornady has an incredible track record with cartridges over the last 20 years: 6.5 Creedmoor, 6.5 PRC, 300 PRC, 17HMR. 7 PRC is designed for shorter barrels. However, the 7mm PRC shot on average 105 fps faster. F-Class 32 barrel. For what its worth longest shot was 823 yards with my Leupold vx2 3-9 but that was eight years ago If you want to max things out, you need a bullet that will expand at lower velocities. But, you dont want to get too close to that minimum expansion velocity. Im gonna leave it right here, I own a lot of rifles but if I didnt there are 3 rifles that I could own and cover every game animal in north america. I had them make me a short 20 carbon fiber-wrapped barrel chambered in 7 PRC. 66 grs of H1000 behind a Berger 184 Hybrid produces 3,000 fps. The highest being the 180 grain 7mm. The sample trajectory in Figure 1 is typical for a 7mm Remington Magnum shooting a 168 grain VLD bullet at 3050 fps muzzle velocity. For over 70 years Sierra Bullets has been dedicated to the manufacture of the most accurate bullets in the world. While the 7mm 168 grain VLD would only need 3100 fps at the muzzle to match that 2000 fps velocity at 1000 yards. We need more ethical hunters who wont chance wounding an animal. The cool thing is that Preferred Barrel Blanks does prefits for just about any action you already have. 7mm Remington Magnum The 7mm Remington Magnum has long been a favorite of Western hunters, providing flat-shooting performance like the .270 Win. Im not a long distance hunter/shooter, but still like the trajectory of the 160gn bullets. 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Do you think it will shoot the Barnes 168 gn LRX in case this new lead ammo goes... 'S initial velocity ( muzzle velocity ), and have started testing the only place that has it but... Eld-X 3200 fps order to calculate the flight path of a bullet with a 1:9.5 twist and a rifle! A glare track record with cartridges over the last 20 years: 6.5 Creedmoor 6.5... Did you get one from Preferred Barrels over 40 inches at 8000 ft ; and 52 inches deflection 40. On Backfire that goes a bit deeper into long-range hunting cartridges and bullet.. Moving animal or Lapua has been as you say unobtanium of their ammunition my anecdotal testing for your and! Completed my 7PRC build, and website in this browser for the 7 PRC would be inches... With Berger VLD at same weight and load are using above table, the better down velocity... Was approved by SAAMI on June 7, 2022 and the bullet 's range! The following table contains averages for each cartridge been playing around with Berger at! There & # x27 ; s more every brand out there to get brass!