The carbine was a KelTec Sub 2000 with a 16-inch barrel. In the test, we used three handguns, a Glock 43X with 3.39-inch barrel, the Glock 45 with a 4.02-inch barrel, and the Glock 17 with 4.49-inch barrel. It was interesting that the heavy 147-grain loads gained the most in the carbine, up to 169 fps with the Speer Gold Dot bullet. In 9mm, a difference of 100 fps is considered a big plus. As a comparison, the 357 Magnum often gains several hundred feet per second in a carbine. The 9mm doesn’t gain as much velocity from a 16-inch carbine as some might think. We do want to note that the primary advantage of the 9mm carbine will be in accuracy and shot placement. We think it is better for the multi-gun 9mm shooter to have one or two loads on hand for optimal performance in different firearms and situations. The same shooter may keep a 9mm carbine for home defense. The 9mm is everyman’s caliber these days, and it isn’t unusual for shooters to carry different-size 9mm handguns, depending on the weather. The retained-weight column shows the recovered bullet weight as a percentage of the actual bullet weight. To calculate IPSC power factor, multiply bullet weight in grains by the velocity in fps, then divide by 1000. For accuracy, we fired the test gun from a benchrest at a 15-yard target. The accuracy figures are the average of two five-shot groups. 9MM Luger Load Performance Data Notes: Average Velocity and standard deviation readings were obtained by firing four five-shot strings over a Competition Electronics Pro Chrono. Our goal was to find an all-round load that performed well in all the platforms but that didn’t beat up the shooter or the guns. We fired more than 2,000 cartridges over a period of 14 months. The problem is magnified when a 9mm carbine is part of the firearms battery. As an example, a load that expands readily in the shortest-barrel 9mm might expand too quickly for optimum performance at higher velocity from a service-grade handgun.īy the same token, a load that expands well from the 4.9-inch barrel might not expand at all or poorly from a short-barrel handgun. The editor suggested we add a carbine-length 9mm as well because the 9mm is popular in both handguns and carbines.īut choosing the right handgun load is important. This could mean barrel lengths of about 3.5 to 4.9 inches. The suggested test would involve subcompact, compact, and service-length-barrel handguns. He wondered if we would be willing to conduct an extensive test of 9mm Luger ammunition. He liked the testing and found it informative. Recently, a GT reader commented favorably on our ongoing ammunition testing.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |