300 prc load development

For this load development exercise, I used the following components: So what do you do if you have a powder or other component that you’d like to use, but don’t have load data for it? The .300 Win Mag is still a fantastic hunting round and it’s a whole lot easier to find .300 Win Mag rifles and loaded ammunition. The 215 Berger at 3100 fps is serious hunting medicine. Though the .30-06 was and is a great option for many uses, hunters and shooters looking for more power or better long range performance have flocked towards the various .30 caliber magnum cartridges for many decades. So clearly we will be running the -.010” load with the lower ES even though the -.015” load shot slightly tighter. In fact, the .300 Winchester Magnum is probably the better all around choice for most hunters. Now with this info I started a pressure series to establish max pressure. As you can see this is why no matter what your source you always start 10% lower than max and work up.

Finished Your Load Development?

The Hornady 10th Edition (p574-585) reloading manual (and their online supplement) provided data to compare their size and recoil of the .300 Win Mag and 300 PRC.

There is some overlap in the common bullet weights they use, but the 300 PRC generally works better with longer and heavier bullets. During this testing, I was able to monitor pressures while shooting the string in my “uncharted territory” 300 PRC load development with Ramshot powder. @ -.010” .216” ES 9 fps Average Velocity 2996 fps. Why can’t handloaders just use those same long, sleek bullets with the .300 Win Mag and not seat them so deep in the case? Always cross-reference load data with manufacturer's published data. Poll: What handgun cartridge do you reload most often? Your email address will not be published.

$14.95 Flat rate shipping for any sized order! A great writeup, thank you, what scope would you recommend for the 300 PRC for plains game and bush like kudu and eland here in South Africa. At 3.7″ long, it’s actually too big to fit in a standard length action rifle. One other good point about the cartridge is that even though it’s not nearly as common as other .30 caliber cartridges, the fact that it satisfies a niche market does make it less susceptible to panic buying (unlike the .223 Remington or .308 Winchester for example). and that is a 7 grain advantage over the 300 Winchester Magnum (this becomes important later). If you can order, we have it in stock! I assumed Ramshot Magnum would have a max charge weight around 78.2 grains or so. That’s how the two cartridges compare to each other in a nutshell.

Hornady C1000 Straight OAL Gauge (+$32.99), Stainless Steel Digital Caliper (+$14.99). With careful handloading, it’s possible achieve slightly higher velocities with the cartridge and/or utilize even heavier and more aerodynamic bullets.

Therefore, 300 PRC has a slightly flatter trajectory, a little more retained energy, less wind drift, and somewhat more recoil than the 300 … It doesn’t require a 4.00” mag box even with VLD/ ULD bullets. Ultimate Reloader, LLC and Making With Metal can not be held liable for property or personal damage due to viewers/readers of this website performing activities, procedures, techniques, or practices described in whole or part on this website. The .300 Win Mag uses a belted case with a 25 degree shoulder. As you can see, it incorporates a number of features to help accomplish that goal.

This helps support the blog and allows me to continue to create free content that’s useful to hunters like yourself.

Since I didn’t have “super-clear” nodes on my 10-shot load development graph, I decided to shoot 5-shot groups (as seen in the video) up towards the max charge weight, again incrementing by 0.5 grains for each test. I'm going to try NOT to run pistol powder in mine.

The same goes for a couple of different options from Berger, so reloaders should be able to make a custom hunting load that works well for their needs.

Ive backed it off 2.5 grains to the top of a long node which I hope to land about 3018 fps ave.

I’m actually a little surprised it took this long for a cartridge that fills that void to come along, but better late than never and Hornady did an excellent job when they designed the 300 PRC. Dismiss. Well, that would result in an overall length in excess of the SAAMI specifications for the cartridge.

My first thoughts were, “Hey, I am 7 grains of H1000 under max case compression capacity. Very convenient! As we drill down into the details of their similarities and differences though, several especially important factors emerge. This time I’ll also cover something a bit different- working up a load when you don’t have complete load data. Loading 9mm on the Dillon RL 1100 with Mr. Bullet Feeder, Breaking: Hodgdon Powder Company Acquires Multiple Brands, Unsolved: 44 Magnum Over-Pressure Mystery, RCBS Lock-Out Die Part II: Setup and Maintenance, RCBS Lock-Out Die Part I: Theory of Operation, Reloading Safety: Powder Check Systems Overview.

Regardless of whether you’re using a .300 Winchester Magnum or a 300 Precision Rifle Cartridge, no pronghorn, mule deer, or elk will go far if you put a well constructed bullet into the vitals. For instance, the 300 Win Mag commonly uses bullets in the 150-210 grain range with 150gr, 165gr, 180gr, 190gr, and 200gr bullets being most common. Poll: What Progressive Reloading Press Do You Use Most? Now while the load at -.005” was great after inspecting the case and bolt lift (faint but detectable) I decided that I wanted to run a little less pressure. So, the 300 PRC does have an advantage in this area, but once again, there’s not a gigantic difference between them. Get a Leupold VX-5HD scope with a CDS dial and match it to your preferred load for the 300 PRC.

If you already have a .300 Win Mag, there’s really not a big reason to upgrade to the 300 PRC unless you just want to. Put simply, more head height facilitates the use of very long, aerodynamic bullets. Having a more snug freebore diameter means there’s less room for the bullet to yaw upon firing before engaging the rifling.

In fact, due in part to the fact that it has a long head height, the 300 PRC has a pretty long overall length. Starting at the final load of the non +P round of 80.0 grains resulted in a velocity drop of almost 100 fps from the pressure reduction of the +P throat. I’m planning to start monitoring barrel temperature for these tests with temperature strips or a non-contact thermometer so that I can take that “variable out of the equation”. September 27, 2019 Gavin 300 PRC, Hornady, Reloading Blog 10 Shot Load Development, 300 PRC, 6.5 PRC, Benchmark Tactical Brake, Dave Manson Precision Reamers, Hornady PRC, Installing a Muzzle Brake, Kelbly's Atlas Tactical, Load Development, MDT ACC Chassis System, Muzzle Brake, Precision Long-Range, Reloading, Reloading Blog, Reloading Press, Reloading Videos, Rifle Barrel Chambering, Rifle Build, TriggerTech Diamond Remington 700, Ultimate Reloader, What dies did you use ?

We will load the ammunition with the specifications from your most recent Load development pack of the same caliber and projectile combination, unless you request differently below! The case has an H2O capacity of 99.0 gr. The content on this website (including videos, articles, ammunition reloading data, technical articles, gunsmithing and other information) is for demonstration purposes only. Buy some excellent 300 Precision Rifle Cartridge hunting ammo here.

Do not attempt to repair or modify any firearms based on information on this website. The 300 wm Berger 215 gr ammo shoots really good in my Ridgeline with groups in the 1/2 moa range. Poll: Where are you finding reloading primers and powder?

A friend did some load development with my Bergara after finally receiving ADG brass.

in standard chamber, 84.5 gr.

300 PRC Load Development Pack - Stage 1 packs are the starting point to finding the optimal charge weight for your rifle. However, the actual body diameter of the 300 PRC is the same diameter as the belt on the .300 Win Mag. That should be perfect at the ranges you’re talking about! Contact ultimate reloader by clicking here. 87.0 grains would have blown the primer right out. .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }, Ultimate Reloader LLC / Making with Metal Disclaimer: (by reading this article and/or watching video content you accept these terms). Head out to your favorite shooting range with your new ammunition and shoot 5, 5 shot groups at your desired distance, between 100 and 400 yards is great! We’ll discuss this more later, but to calculate head height, subtract the case length of the cartridge from the maximum overall length. The thing I like the best here is the combination.

Both of those loads were obtained using a 24″ barrel, so your mileage may vary. However, the good news for hunters is that typical 300 PRC barrel life is more than enough to last for many years of hunting with no issues at all. That said, I wouldn’t count on finding 300 Precision Rifle Cartridge ammunition in smaller gun store. Book an outstanding Africa hunting safari here. In general, a longer neck helps hold a projectile (especially a very long one) securely and concentrically, both of which help with accuracy.

!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)? All gunsmithing procedures should be carried out by a qualified and licensed gunsmith at their own risk. Hornady formally rolled out their new 300 Precision Rile Cartridge at the 2018 SHOT Show. As previously stated, both cartridges have the same .532″ case head diameter. Ever since the .30-06 Springfield took the hunting world by storm at the beginning of the 20th Century, .30 caliber cartridges have been extremely popular among hunters and shooters in North America. https://www.defensiveedge.net/index.php/classes. First off, the cartridges have different roots and were built with different goals in mind. Basically, having more head height means the 300 PRC offers more room outside the case for bullets than the .300 Win Mag.

Thanks Leigh, He Leigh. 3106 fps no ejector mark, no bolt lift, Shot 84.5 grains @ -.005” , -.010” and -.015”, -.005” .473” 19-.010” .258” 9-.015” .184” 23. John, Thanks for the great read I currently run 300wm. At the same time, the .375 Ruger was designed with the same .532″ case head diameter as the .375 H&H. The biggest advantage of the 300 PRC is the fact that it’s specifically designed to use those really aerodynamic bullets. 3130 fps Faint bolt lift similar to 81.0 gr.


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