- Mar 6, 2008
This is a thread for discussion of the article, The 7mm Fatso - The Ultimate Short Magnum!, By Greg Duley. Here you can ask questions or make comments about the article.The short magnum craze has taken the gun world by storm, with most manufacturers now producing rifles and ammunition for these cartridges. Based on the old British medium bore African cartridge, the 404 Jeffrey, these modern beltless cartridge designs are supposed to give you 2.5 inch case length medium magnum ballistics out of a short action, compact and lightweight hunting rifle. In factory ammunition they achieve this goal by loading the short magnums to higher pressures or by using the latest progressive burning powders. Handloading ammunition to the same pressure with the same powders in the same barrel length, the 7mm SAUM falls 100 fps short of the 1962 vintage 7mm Remington Magnum while the 7mm WSM drops about 50 fps short. When comparing the 300 short magnums with the 300 Winchester Magnum, they fall further behind due to the 300 WM’s 2.62 inch case length, which is longer than the other medium magnum's.Read More...
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