![]() The FBI Silverback penetrated to just over 18 inches, often stopping in the outer layer of the final water jug, and expanded to. Some will opt for a bullet that is capable in the worst case scenario. Dealing with heavily clothed cons in the winter months, or an adversary behind cover or in a vehicle demands greater penetration. Some like more penetration-many agencies and the FBI demand it. A combination of good control, accuracy and power make the Gorilla Silverback a desirable loading. The Silverback would not shake out of the jug’s mouth! Coupled with fine accuracy, integrity, and function, this is a credible personal defense load. The water drains, and I shake the bullet out of the jug. I carefully estimate the spot the bullet is laying for 13-14 inches of penetration. When testing with water, the bullet may penetrate the first two jugs-12 inches-and come to rest in a third. Often, rapid expansion negates penetration, and deep penetration does not come with good expansion. That is the greatest expansion I have recorded with any. The personal defense load penetrated about 13 inches of water and expanded to 1.25-inch. I expected some sort of expansion but was not prepared for the outcome. I fired the loads into water jugs as my standard test of bullet expansion. Control, feed and cycle reliability were flawless. The R11 is well regulated for 230-grain loads and each Silverback struck to the point of aim. I fired a box of each to familiarize myself with the loading. The FBI load was slightly faster at 802 fps and exhibited a group of 1.75 inches.Įach load had given good results in testing for cartridge integrity. That is “good enough for government work” as they say and above average for this pistol. ![]() Over a solid bench rest firing position at 25 yards, the R11 put five bullets into 1.5 inches. Although this is a personal defense pistol, its accuracy has proven excellent. This meets the subsonic criteria advertised. This FBI type JHP stopped in the skin of the third water jug in line.įiring the personal defense loading first velocity averaged 780 fps. It is hard enough that it will withstand handling over the long term. Copper is useful for long-term storage and resistant to corrosion. Solid copper bullets are useful in areas that prohibit lead bullets for hunting or target use on the range. The design of the bullet and the cuts in the nose that instigate expansion are also used to control depth of penetration and expansion. The annealing of the bullet is used to control expansion. Solid copper bullets are designed with a hollow point in the nose similar to conventional cup and core lead and copper bullets. The Silverback line uses a solid copper projectile. A short Officers Model 1911 might demonstrate 20-30 fps less velocity on average. If you use a Glock 21 with its polygonal rifling you will realize at least 50 fps over the R11-perhaps 65 fps. If you use a 5-inch barrel, 1911 velocity should be approximately 50 fps greater than my Commander length R11. The Remington R11 Commander suits my needs and has proven accurate and reliable. I chose one of my favorite carry guns to test this ammunition. A standard pressure loading is capable of demonstrating a good balance of expansion and penetration without excess recoil. With a highly-developed pistol projectile, this isn’t necessary. This was done to ensure expansion with a certain bullet. There was a tendency a few years ago-and a path still taken by some-to load a caliber to the hottest standard, practically too hot in many cases. The Gorilla Silverback 230-grain personal defense load exhibited excellent expansion. Gorilla Ammunition meets these baseline criteria. The ability to load and unload the pistol without bullet setback is important. The bullet must not be subject to setback in the cartridge case after numerous chamberings. The loading must exhibit good case mouth and primer seal. The first concern is cartridge integrity. I am impressed by the loads and, after all, my standards are high. My limited testing indicates that each load is well within design parameters. This load meets or exceeds stringent FBI criteria for barrier penetration. The Silverback offers two loadings, one for personal defense and another that is simply marked FBI. I have been able to test the Silverback line in. The performance is based upon sound manufacture and intelligent choice in projectiles. Solid Copper Bullets With an Edge in Performance The Personal Defense load, left, and the FBI criteria load, right, each gave excellent results. I often see preposterous claims concerning velocity, expansion or what a bullet may be capable of. I have been using Gorilla Ammunition for only a few months but have come to respect the brand integrity.
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