That's an awful long reach for a light-recoiling rifle. Both loads stay supersonic up to 1 mile under a standard atmosphere. The 143-grain Extremely Low Drag - eXpanding (ELD-X) bullet had a muzzle velocity of 3013 fps and the 147-grain ELD-Match (ELD-M) had a muzzle velocity of 2989 fps. The rifle I used to test the 6.5 PRC factory loads was a custom-built affair from Mile High Shooting Accessories with a 26-inch barrel.
Keeping the bullet out of the case not only ensures efficient use of case capacity but prevents the powder column from bending the bullet or pushing the bullet into a yaw before it engages the rifling. Hornady determined case length by starting with a 140-grain bullet and seating it to a depth that kept the bullet's bearing surface above the neck/shoulder junction, with an overall length no greater than 2.96 inches. The case has a slight taper until it hits the 30-degree shoulder. 532-inch as is the case body just forward of the case head. Unlike the SAUM, the RCM has no rebated rim. Hornady also didn't like a couple of the SAUM case dimensions, so they started where everyone wanted to in the beginning: the. The 6.5 SAUM saw a couple of different chamber specifications during its life, so picking the most recent iteration meant leaving the early adopters with compatibility issues. When it came time to make a factory 6.5 short magnum, the idea of getting SAAMI certification for the 6.5 SAUM didn't last long. 300 SAUM case as his starting point and the 6.5 SAUM was born. Since this would be a wildcat cartridge, he used the. However, when Gardner was working on developing the 6.5 SAUM, there was no. Both Gardner and Hornady knew that the best parent case for a 6.5 short magnum was the. Gardner is the owner of GA Precision and he made the first successful effort to create a short magnum 6.5 cartridge. Hornady worked with George Gardner on the predecessor to the 6.5 PRC, the 6.5 Short Action Ultra Magnum (SAUM). So, Hornady settled on 60 grains of powder as the limit to ensure the cartridge provided decent barrel life. Once the throat erodes, the barrel is "shot out" and requires replacement. This is like scouring the throat with an abrasive every time the rifle fires. "Overbore" is a term that gets thrown around a lot when discussing magnum cartridges and all it means is that a portion of the unburned powder column travels past the chamber's throat and into the bore. It offers high muzzle velocity and the heavy-for-caliber bullets hold on to that velocity well. Math plays a significant role in long-range shooting and the math behind the 6.5mm is compelling.
Hornady opted to design a short magnum hunting cartridge around the 6.5mm caliber because the rifle-shooting population was finally embracing this caliber and its superior ballistic coefficients it offers.
While I favor the 6.5 PRC for Precision Rifle Series (PRS) matches out west or in high-wind environments, it was originally developed as a long-range hunting round. Given that it fits in available detachable box magazines, is also a huge benefit. A 6.5 PRC has enough barrel life for you to shoot a competitive season without having to replace your barrel. The 6.5 PRC is the king of all the "magnum" 6.5 cartridges because it offers fantastic performance without excessively shortening barrel life or giving punishing recoil. will net about a 300 fps increase, so the "magnum" title is a good fit for the 6.5 PRC. For comparison, consider the move from a. It offers about 250 feet per second (fps) more velocity than the 6.5 Creedmoor for any bullet weight chosen. The Hornady 6.5 PRC (Precision Rifle Cartridge) is a "magnumized" 6.5 Creedmoor.