This allows both rifle cartridges to fire extremely heavy projectiles with bullet weights ranging from 250 grains up to 500 grains for the 45-70. The 458 has a rim diameter of 0.473”, which is the same as the 308 Winchester, 30-06 Springfield, and 270 Win.Īlthough the cartridge cases of both rounds are very different, they both fire the same 0.458” diameter bullets. The 458 uses a rebated rim design, meaning their rim is narrower than their cartridge base. Rimmed cartridges are often used by lever guns as a solid point of contact for the extractor to ensure solid feeding and extraction into and out of the chamber. However, with the advent of smokeless powder, smaller powder charges were needed.Īlthough rarely filled to capacity, the 45-70 can hold 81.8 grains while the 458 SOCOM has a case capacity of 61.1 grains.Īnother major difference is that the 45-70 is a rimmed cartridge while the 458 is rimless. A larger case was needed for the 45-70 for its heavy charge of black powder. With a larger case comes increased case capacity. Overall length is also extremely different, with 2.55” maximum overall length for the 45 70 compared to 2.26” for the SOCOM round. The 45-70 case is considerably longer than the 458, with a case length of 2.105” for the 45-70 Govt and 1.575” for the 458. On the other hand, the 458 SOCOM utilizes the more modern bottle-necked cartridge case for improved feeding reliability in a semi-auto AR-15. When looking at the cases for the 45-70 and the 458, the 45-70 utilized an older straight-walled cartridge designed for a lever gun. To read more about these three rounds, check out this article: 450 Bushmaster vs 458 SOCOM vs 50 Beowulf. The three most popular Thumper Rounds are the 450 Bushmaster, 458 SOCOM, and 50 Beowulf. Jeff Cooper as he envisioned rounds that were 45-caliber or larger and capable of taking down a whitetail in a single shot. The term was coined by American shooting icon Lt. The 458 SOCOM is part of a classification of AR-15 rounds known as the Thumper Concept. The 50 AE is most well-known for being the primary chambering of the Desert Eagle handgun. Instead of using a unique case design, a 50 Action Express (50 AE) was lengthened to 1.575” and given a slight shoulder for the 458. On the other hand, development of the 458 SOCOM began in 2000 in response to a conversation (supposedly at a barbecue) between Marty Ter Weeme of Teppo Jutsu LLC and a member of the United States Special Operations Command (SOCOM) surrounding the ineffectiveness of the 5.56 NATO round in the Battle of Mogadishu. The 45-70 has no parent case and was a completely unique design. Army’s Springfield Armory for their new single shot Model 1873 rifle which came to be known as the “Trapdoor Springfield”. 70: The powder charge is 70 grains of black powder.45: The cartridge fires a 0.458” diameter bullet.The original name for the 45-70 Govt was 45-70-405 and here’s what that means: The 45-70 Government was initially a black powder cartridge that utilized a significantly different naming system than modern cartridges that can be confusing to new shooters. The 45 70 was released shortly after the end of the American Civil War in the early 1870’s while the 458 SOCOM was developed in 2000 and released in 2001. Perhaps the biggest difference between these two cartridges is the time period when they were developed. When evaluating centerfire cartridges, it’s a good idea to analyze the cartridge specs to gain more knowledge of each. The 45-70 is primarily a lever-action cartridge while the 458 SOCOM is chambered in the AR platform. The biggest difference between the 458 SOCOM and 45 70 Govt is the rifle used for each cartridge. What is the difference between the 458 SOCOM and the 45 70? In this article, we will evaluate the 458 SOCOM vs 45 70 Government to help you understand the differences between the two and give you a clearer idea of which cartridge is best for your shooting and big game hunting needs. Make no mistake, the 458 SOCOM and 45-70 Government are two centerfire rifle cartridges that understand the meaning of “stopping power”.įiring a massive 0.458” diameter bullet, both rounds are more than adequate for taking down a herd of feral hogs, deer hunting in the back woods, and stalking the majestic plains buffalo.Īlthough the development of these rounds was separated by over 125 years, the 458 SOCOM and 45-70 Government (Govt for short) are incredibly similar in terms of ballistics and the deciding between them primarily comes down to your preferred hunting rifle.įor lever-action rifle lovers the 45 70 is gold standard for big game, while the 458 SOCOM is an excellent choice for those hunters who want a big bore AR-15.
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