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. If you're targeting large and dangerous game, those heavier bullets certainly make a difference. As soon as the cartridge was officially announced, Hornady announced many rifle makers that will be producing factory offerings for the 7 PRC. I really want to compare recoils of suppressed rifles. But wait, theres more. 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 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 . Another limiting point is how well you judge distance. Personally, I have said for a long time on the Youtube channel that my ideal hunting cartridge would be a 7mm shooting 180 grains at 3,000 fps. I thought for certain it would have more powder capacity than a 7 Mag so Hornady could advertise the new cartridge beating the old standard. V-MAX . Thanks, God Bless. The first is simple to measure and compensate for. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. After that velocity diminishes very quickly. Every hunter needs to read this and understand the real limitations of their ammunition. We analyzed 6 different loads for each cartridge (the proper way to read that sentence is Jim sat at a computer for WEEKS putting data into very complicated Excel sheets) to come out with an average of what several common loads for each cartridge will accomplish. I enjoy your videos. Winchester told me they arent planning a series. Sounded like your load data charts for the 7mm PRC were all done with 24 test barrel. He is a well-known entrepreneur, having started many successful online brands, and lives in St George, Utah. To optimize performance of the 7mm RUM, Remington engineers produced a chamber design utilizing .400" (10mm) free bore. Its all highly situational, but it matters. Hornady officially announced the cartridge on October 26, 2022 at the NASGW Expo. Important Note: This is anecdotal testing. bearcat2; Nov . For this load, I chose the 195 Berger EOL and loaded it to max COAL of 3.34. I just hope I gave you a little something to consider. The ballistic data below was calculated with a Hornady 180gr ELD-Match 7mm bullet fired at . Learn to listen to your gut and understand your abilities. Why is it a foregone conclusion that Shooters will gravitate toward heavy-for-caliber high-BC bullets in the 7mm PRC? Starline Brass has plans to produce these cases in the future. Practical distance isnt the same as the max distance a rifle can shoot. Our reference system will take 1.3 seconds to reach 1000 yards. I find your data a bit too limited, which can vary greatly depending on multiple other factors. Be intentional and smart with each shot. Your load data is tied to your rifle serial number and thus can be ordered from us at any time. Im tired of hunting with my long and heavy 300 win mag so Im re-chambering it. Apr 17, 2011. load. I keep watching to see everyones long term thoughts and hunting performance. The Extreme Spread (ES) of our velocity is usually under 10 fps and Standard Deviations (SD) is usually around 3-5 fps. These are Altitude (basically, Pressure), and Air Temperature. It will a produce a line graph showing the bullet drop and flight path of the bullet. So please keep letting us know how it works for you. Its a direct thread. Seriously, before anybody argues with me, watch the video and get out your calculators and figure it out for yourself. Sample Trajectory showing the bullet path crossing the line of sight.Because gravity causes the bullet to drop, the longer a bullet takes to reach its target, the more time gravity will have to pull it towards the earth. The sample trajectory in Figure 1 is typical for a 7mm Remington Magnum shooting a 168 grain VLD bullet at 3050 fps muzzle velocity. Seriously, its by far the nicest die set Ive ever ownedand Ive tried just about every brand out there. Jim, I enjoy that you use your platform to provide reliable data to ethically take animals. 5/8 to 1 groups at 500 yards. Any suggestions? I also have a 264 mag but the 6.5prc will do anything it will do but with a lot less powder. Well, that would limit most hunting rifles to between 150 and 400-yards. But wait, there's more. It was an exciting huntwe would spot goats from the valley floor, and climb 3000-4000 feet every day to hunt them. This would negate most of the recoil pain and serve as a solid replacement for 7mm Rem Mag without the belt pain. If you would like more information about any of these topics in an easy to understand format, try Robert Rinker's Understanding Firearm Ballistics. Thanks again for the info. 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. Thanks. First, lets take a look at H4831SC powder loaded with a 175gr ELD-X bullet. This is more energy than some other centerfire cartridges at the muzzle! I would like to know if you have any info on the 7.7 jap. Thats what Im really most curious to know. Id love to see what data you get so I can include more data in this post. If you own a 7mm Rem Mag, its easy to produce 7mm Rem Mag Ballistics reports using Shoot! Or wait and hope it stops for a few seconds. Very well done. But, everything has to be perfect for it to work. I ABSOLUTELY would use 7mm PRC on elk. Can someone help me with a MOA ( 4 clicks for 1" ) drop chart for my 7MM Rem Mag? Once break in has been achieved we clean the rifle and begin load development. Shots near the max effective range can totally miss the animal if you misjudge the distance by 50-yards. I think your numbers might be off. deciding between the 6.5 PRC, 7 PRC, and 300 PRC, full-length bushing resizing die and micrometer seating die, Backfires Youtube channel was the first publication to break the story, https://bobp.cip-bobp.org/uploads/tdcc/tab-i/tabical-en-page36.pdf. if you looking at 1000 yards I would be looking at a different rifle , Something more like a 50 BMG , 6.5 to be honest. A bullet with a BC of 0.400 will drift over 40 inches at 700 yards in a 10 mile per hour crosswind. Practicing in these conditions can yeild valuable experience.I'm always learning about how to become a better shooter, and I still make mistakes. And were you making your own brass or using RCC machined brass? Thanks, Jake. Windage differences are still within 2 inches. However, the 7mm PRC shot on average 105 fps faster. If for a brief fraction of a second everything is lined up and you in that instant know you got it, take the shot. If its foggy or rainy out, the clarity of your sight picture will limit how well you can shoot. 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. Ive constructed a similar table that takes into account bullet construction, including expansion ratios and weight retention over time, and Id be curious to get your opinion on it. I had to calculate the 100gr at 3500fps. The email address you entered is not valid. If you're after deeper penetration, look at the 139-grain Barnes VOR-TX Long. Even fairly experienced reloaders sometimes struggle to get reloaded brass to fit properly into the rifle. Max range 600yard, would like to shoot the 180s. What is the mounting method, QD or threaded? The three sometimes neglected variables are the human factor, the weather factor, and the fact that you are shooting at a wild animal, not a stationary target. Remember, they dont show you the times it didnt work. For over 70 years Sierra Bullets has been dedicated to the manufacture of the most accurate bullets in the world. They show how a 7mm with a 168 Berger has more energy down range than a 30-378 weatherby with a Barnes. We will also provide a dummy round for you to take measurements if requested. Though it is designed to headspace off the belt of brass, handloaders can improve concentricity by using the shoulder for headspacing. ( I know you prefer shorter barrels especially for hunting). Winchester Ballistics Calculator. Power Rank: 3.9 of 20. How much does the system you made weigh? Personally, my load for the 175 ELD-X in the 7mm PRC will be 64gr of H4831SC, which should yield around 2,925fps. Theres always another hunt. Magnus spin drift will cause a bullet to drift right for a right hand twist barrel, and the amount is proportional to the square of the time of flight. With the ammo and reloading components markets starting to normalize, when do you think 7mm PRC ammo and reloading components will be available this year? I was finally able to connect on a billy at 575 yards, but with a quartering 15 mph wind. The challenge of loading for any of the PRC cartridges is the extremely tight tolerances. The numbers for hunting bullet's usually range from 0.200 to 0.800 with most falling in the 0.400 range. H1000 ran out of space for powder before I reached max velocity. Steve, Jim, Im in the middle of building a 7PRC. So far, my favorite powder for reloading the 7 PRC is H4831SC using standard large rifle primers. At the same time, while the 7mm Rem Mag tops out with 175 grain bullets, the .300 Win Mag is capable of firing 200 grain, 208 grain, and 220 grain bullets with sectional densities of .301, .313, and .331 respectively. The highest being the 180 grain 7mm. Because of the nature of the bullet's shape and its performance through the air, changing Air Densities can have a large effect at long range. You have to find the right balance of weight and aerodynamics. 7 PRC looks like the best large deer caliber. 7mm Remington: SP: 203: 2447: 2330: 7mm Remington That doesnt mean I should take a shot that far. Jim, Im wondering why you did not include the Winchester 284, in your comparative with the lineup. Building a rifle with no reloading data and no established manufacturing was a challenge, but now you can easily get a rifle rebarreled for 7 PRC. Thank you very much in advance, 300 PRC and 6.5 PRC ammo has challenging to find too, but is finally showing up with Federal and Sierra joining Hornady. The illustration in Figure 3 was reproduced from Harold Vaughn's excellent book Rifle Accuracy Facts, and shows how a bullet reacts, and the drag forces that cause wind deflection. He has managed multiple gun ranges, and has hunted around the world. How do you think it will shoot the Barnes 168 gn LRX in case this new lead ammo ban goes through? Did you perhaps mean 50 cm? Jim Harmer is a host of the Backfire Youtube channel. Wind Drift diagram showing how the forces act on a bullet. All Rights Reserved. Loris: 50 inch would be uncommonly long. Please let me know how it can be improved upon. As an Amazon Associate I earn from qualifying purchases. N NomadPilot Well-Known Member Joined Note that with these loads, I switch to a standard large rifle primernot a magnum primer. Now, I either need to find ammunition to shoot, or new brass. The parent case is the .308 Winchester with a narrowed neck that fits a .284 inch bullet on a .315 inch neck with a rimless, bottleneck case. Again, BC and velocity is important. https://bobp.cip-bobp.org/uploads/tdcc/tab-i/tabical-en-page36.pdf. Here is my info: 3040 FPS, 160 accubond at .531 b/c, 50 degrees and 5000ft. The second is errors in ranging and wind doping. Come join the discussion about optics, hunting, gunsmithing, styles, reviews, accessories, classifieds, and more! It is on the upper end of what most large adult shooters can comfortably tolerate. He has managed multiple gun ranges, and has hunted around the world. Im getting impressive velocities despite the short length, and the accuracy has been insanely goodone of the most accurate rifles Ive ever shot. 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. With quality hunting ammo, this cartridge maintains 2000 fps velocity to around 600 yards. Altitude: 0 Feet with a Standard Atmospheric Model. Thats a dead whitetail deer out to 1200 yards lol. *Casing image above is an artist rendering and not a real photo of 7mm Remington Magnum Ballistics cartridge. They have some cool videos that explain it better than I can. As long as its a standard long-action, you should be just fine putting a 7 PRC barrel on it. with 50 inch barrel. There would be 226 inches drop at 1000 ft elevation compared to 207 inches at 8000 ft; and 52 inches deflection versus 40. 7mm Ballistics Examined For this ballistics demonstration we are using Norma 150gr Scirocco with a muzzle velocity of 3117fps and a ballistic coefficient of 0.536. Seldom is the practical max the same as the true max distance. This streamlined, long 0.284 bullet cuts through the atmosphere with minimal drag effect, thus retaining velocity and energy far downrange (as you can see from the graph). Please use a 300 yard zero and give me 100 yard clicks out to 1000 yards. The 284 as used by benchrest shooters at 1000-yard matches uses a 180-grain bullet in along action. Does anyone know how hot you can load a 162 gr. My $0.02, 6.5 creedmore, 7.82 warbird, 338 luapa, 7mm ultra mag comes to mind. 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. Nice informative article. But gravity drop is only the first of many effects that we need to compensate for, in order to shoot precisely at long range. Now that hunting season is over would love to see some load testing out of your 20 inch barrel. The 7mm PRC will beat the following cartridges in sales over the next 20 years: 280AI, Gunwerks LRM, and the 7mm Rem Mag. About -10+ yards! R . 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! 1998 - Present. Pinsoft Software. Given Hornadys target load of 180gr at 2,950fps, this is likely a max load. This package can be added onto any rifle bought through Evovled Ballistics. Now I think that build is going to be a 7 PRC. If I add to that a gusty 25 mph wind, Im not shooting past 200 yards. Ill keep pushing my 7RM 180gr at 3050 with 72.2gr Retumbo with brass more available than I could ever want or need. while they work great at closer ranges, they will fail miserably if you want to push your shots out there. My scope has seen better days but my Weatherby Accumark is like new and I really like it. If you want to max things out, you need a bullet that will expand at lower velocities. 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. Select Your Gun Type. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. The 7mm Weatherby! Every effective range calculation will, by its nature, be only a broad approximation. It's like these other guys said, if you throw a small rock it goes really fast, but not very far. Obviously Hornady makes dies for the 7 PRC, but I personally am not a fan of their dies. The following is a 500 yard 7mm Rem Magnum ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 500 yd mark.
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