Exact same setup. Using a 30 Bartlein barrel, Manson reamer, RCC brass, and wanted to do some comparisons to your results. Thanks for your help!!! Sedalia, MO 65301 I do reload and my rifle seams to like 70 grains. The .204 ruger for varmints, 6.5 prc for deer and elk but also moose, then the daddy of short mags the 300wsm which can really handle elk moose and brown bears. A 20 degree incline at 1000 yards is worth 15 inches and is a realistic shooting situation. 7mm Remington: SP: 203: 2447: 2330: 7mm Remington Being derived from the H&H case, there is plenty of case capacity, and the 7mm Remington Magnum will send the heavy 175-grain bullets at a muzzle velocity of 2800 fps or so, depending on the manufacturer, and the speed only increases as the bullets get lighter. burning 61 grains Reloder 22 Recoil: 26.5 ft-lbs at 14.6 fps velocity Muzzle Energy: 3,269 ft-lbs Maximum Pressure: 61,000 psi MPBR: 365 yards (Zero at 307 yards, 3.9" high at 100 yards) These are some impressive numbers. Hey Jim, thanks for all the great content. Personally, my load for the 175 ELD-X in the 7mm PRC will be 64gr of H4831SC, which should yield around 2,925fps. I ABSOLUTELY would use 7mm PRC on elk. In fact, Aaron Davidson, CEO of Gunwerks, jokingly said that the new 7PRC is the 7LRM. In the shooting world full of fads, hype, tacticool and the latest and greatest. Im hunting with this cartridge with 145 gr TTSX on red stags till 250 kg untill 300 m: As you can see from the above table, the 7mm PRC is most similar to the Gunwerks 7 LRM. Im running a 20 tube on a Bergara action. rating at 4,200 fps, it would miss. This free bore acts as a gas expansion chamber, maximizing velocity due to a longer pressure curve. The higher the number, the better down range velocity retention. Canting your rifle scope (tipping it left or right) can also cause significant left/right error. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Someone forgot the grand daddy of 7mm mags! Did you perhaps mean 50 cm? Not like they are going to get away stuffing a 7mm PRC into a short action any less than the 7mm STW even when the former has a shorter COAL. 1000ft.lbs: 1660yd. 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. Matt. Unfortunately I wasnt able to find any standard case diagrams for the Sherman cartridges so thats really all I can say. This would negate most of the recoil pain and serve as a solid replacement for 7mm Rem Mag without the belt pain. How does the 7mm Rem Mag achieve such ballistics? Great video and Ive been following and hoping that a 7 PRC would come for years now. Ok ya that makes sense. Let's look at the difference in drop and deflection for our reference at 1000 yards from a 200 yard zero for two cases: 1000 ft 50 degrees ,and 8000 ft and 20 degrees. Well done mate , wont 7wsm do the same?? We develop the ideal load for your rifle that is tailored specific to your requirements, hunting or target. At 1000 yards the rotation of the earth is basically moving your target down 2.6 inches per second if you are pointing east, and up if you are pointing west. Can you tell me which suppressor you are using? Every hunter needs to read this and understand the real limitations of their ammunition. No obvious pressure signs, but I didnt feel I should compress further. For what its worth longest shot was 823 yards with my Leupold vx2 3-9 but that was eight years ago But wait, theres more. Will be suppressed at times, but in a effort to save weight on certain hunts will ditch the can(7 TBAC Ultra). I have two bags of W-W virgin brass and enough multi-fired brass to last me the rest of my life. Re#26 69 grs pushes a 162 gr A- max 3225 fps. Sorry man, wasn't going after anyone, it's a hotly contested issue around the guys I run with, guess i just assumed it would be here too. We will ignore any left/right effect, and focus on the vertical errors. This bullet with a muzzle velocity of 3000 fps in a 10 lb shooting system, with proper stock design is about a maximum level of recoil a long range hunter should deal with. If its foggy or rainy out, the clarity of your sight picture will limit how well you can shoot. If you hunt and want to shoot at a longer range, you may be wondering what the effective range of a rifle cartridge is. N NomadPilot Well-Known Member Joined L. B. Jim, I enjoy that you use your platform to provide reliable data to ethically take animals. To me its in the Goldilocks zone. Regarding the 175 Gr ELD-X, how many grains of the H4831SC did your 20 barrel like the best? I think too many hunters see muzzle velocity and assume if its fast, itll work long range, and thats not true at all. For example, having 1,500 ft-lbs of energy to kill a bull elk is a decent barometer, but elk have also been killed with far less energy when excellent shot placement and good bullet construction are in play. 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. That adds up to a difference of point of impact between shooting east and west of nearly seven inches. The email address you entered is not valid. You have stated several times you would not use 6.5 Creedmoor or 6.5 PRC for large game like elk. 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. Ive done a significant amount of handloading and reloading for the 7 PRC over the last few months. My scope has seen better days but my Weatherby Accumark is like new and I really like it. Further comparison shows that is flies faster than either of the 3 other rounds, and only the 270 Win beats it in terms of average power, but the 7mm is the victor in the average energy as well having 3106 lbs of force from muzzle. If you want to max things out, you need a bullet that will expand at lower velocities. You might be able to measure with a data meter the speed and direction at your location, but the wind is very likely doing something entirely different at mid-range, or at the target. Any idea on predicted velocities for it? Shots at game at 800 yards are extreme and should only be attempted by shooters that are using the right equipment, and have the coaching and preparation to positively make the shot. Now I need to look at the 7.62x54R. Was pleasantly surprised by your reference to preferred barrels and to find out that you are also a local Utah sportsman as I grew up only 70 miles away from St. George and still live and hunt this area with my family. In the 1960's Remington created the 7mm Remington Magnum based of the 375 H&H cartridge design. 2950fps with 32 inch barrel. The 7 PRC is designed around the 180-grain ELD-Match bullet; however, some people will certainly point to the fact that the 7mm Rem Mag has been able to shoot 180-grain bullets for many decades. same principal applies to bullets. Seriously, before anybody argues with me, watch the video and get out your calculators and figure it out for yourself. Mainly, because of our inability to directly quantify wind speed and direction as we can with distance when using a rangefinder. Most rangefinders can have errors of at lease two percent at 1000 yards, even if you do everything else correctlykeep in mind that it is very easy to range an object just behind or in front of your target. I was pleasantly surprised to see that the cartridge is quite mild. How far can you throw a ping pong ball compaired to to throwing a golf ball?? Whidden Gunworks doesnt show 7mm PRC offering on their website. In general, a bullets maximum effective range is the distance at which it no longer travels fast enough to reliably expand when it hits a target. This is again shooting the 175gr ELD-X bullet out of 24 test barrel with a large magnum CCI primer. If you would like more information about any of these topics in an easy to understand format, try Robert Rinker's Understanding Firearm Ballistics. As we examine the drop and deflection of a bullet it becomes apparent that BC and velocity are very important parameters for shooting at long range. They should also understand their own limitations. Newlon blanks. My 7 PRC will be in my hands Thursday so I will let you know how N560 and a 175 Hornady ELD-X does. I'd throw a link in, but i don't know how from an iPhone. Note that BOTH of these are a compressed load, so you couldnt really go much faster than this with H1000. They use Berger 168 gr VLD (Very Low Drag) bullets. Corriolis effects from the earths rotation also needs to be compensated for. Backfire LLC owns and operates this website. Well, that would limit most hunting rifles to between 150 and 400-yards. Before SAAMI drawings of the 7 PRC were released, I fully expected the 7 PRC to follow the industry-wide trend of overbore hot-rod cartridges. I have a table showing the highest BC 7mm bullets, but here are a few bullets likely to be popular in the 7mm PRC: Below are the specified twist rates for many similar cartridges to the 7 PRC. This is more than adequate for taking down large game the size of elk at this distance, provided you use the right bullet to penetrate to reach the vitals and place the shot accurately. This setup is for long range target shooting. Im still using the same 24 test barrel by Preferred Barrel Blanks for this cartridge. Here are the ranges for a 190gr A-Tip Match in a 27in 7.21 Firebird at 3240fps: 1900fps: 1250yd Where can I get 7 PRC brass? I also received some information from a gentleman in Canada who built a 7PRC. I guess I can hang the gun on the wall and admire its looks until ammunition is available. For this ballistics demonstration we are using Norma 150gr Scirocco with a muzzle velocity of 3117fps and a ballistic coefficient of 0.536. I saw the BIG ballistics spreadsheet on your youtube videos, you should share that. External ballistics covers everything that happens during a bullet's flight between the muzzle of the rifle, and the target. N560 offers some of the best velocities without a compressed load. In our next article we will look at how to calculate and compensate for long range shooting, and the equipment and programs that will do it. The same goes for doping wind for direction and speed. For over 70 years Sierra Bullets has been dedicated to the manufacture of the most accurate bullets in the world. In a trophy hunting situation, it's important to have the equipment and preparation to ensure that you can make the shot at that once-in-a-lifetime trophy, even at 800 yards! There are quite a few variables that all work to decrease the true potential of a rifle. Eliminating the effect of wind by using high BC's and proper compensation techniques is the only solution. I find your data a bit too limited, which can vary greatly depending on multiple other factors. She looks like a real keeper to me. Far shots start to need a lot of compensation for bullet drop and wind drift to make an ethical shot on a game animal. Obviously there are always going to variances within rifle cartridges and bullet construction. Compaired to to throwing a golf ball? virgin brass and enough multi-fired brass to me... For over 70 years Sierra bullets has been dedicated to the manufacture of the 375 &! Did your 20 barrel like the best velocities without a compressed load gr VLD ( Very Low Drag ).... 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