Glock 40 Accuracy - If it sounds presumptuous to suggest that Glock pistols need no introduction, who does?
Do they need an introduction? Austrian Olio's lightweight, ultra-tough polymer frame; Safe action trigger system; Slide and barrel of steel; And only 34 episodes in total are at least symbolic. Even a brief review of military/SOF, law enforcement, and civilian applications seems to leave little room for the uninitiated. And these 30+ years of certifications prove that they are all indestructible and incredibly reliable.
Glock 40 Accuracy
Glock Good, then get down to business. Very few begin to do what the 10mm does with ease, and few pistols can still demonstrate that ability like the long line of Glocks.
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We begin our review of the G40 with the assumption that we have our legitimate friends—what you might call a "disclaimer of interest"—that is, agreement: We are 10mm fans and always have been. Glock's predecessors in caliber are a big part of the "why". Other 10mm enthusiasts will note: Unlike many other caliber handguns that have come and gone, there are still plenty of early G20s out there – Glock's original 10mm.
This was actually a sharp market assessment back in 1991. Most other 10s either never came to market (Brain Ten of Sonny Crockett/Don Johnson/"Miami Vice" fame) or were quickly built under pressure like early Norma loads (many a sad Colt Delta Elite or Smith & Wesson 1006 owner.
Lament), there was plenty of elbow room and ample storage on the retail shelves. The latter came from Col. Jeff Cooper, the dean of practical/tactical handguns at the time and the cartridge's idea. Col. Cooper was quoted as saying, "The .45 does at 25 yards and the 10mm at 75 what the 9mm never does."
They claimed that the ball was accurate, although the bullets and powders of the day did not allow the cartridge to really shine. Developing the ability to correct perceived weaknesses—gunfire and recoil penalty—was in fact the genesis of a very familiar cartridge—the .40 S&W. But as the .40's superior handling capabilities came, it was magnum-like power in an autoloader that appealed initially. It took patience and persistence to remain a 10mm fan, and with the exception of the Glock, options were limited.
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As the G20's ancestor, the G40 remains a big gun by any standard. It adds slide sizes (8.19 inches between sights) reminiscent of the 17L (9mm) and 24 (.40 S&W), though the longer sight radius is matched by a cartridge that can only now take real advantage. Like the Gen4, it also shares a nice improvement in grip ergonomics - with an optional back strap and larger gauges for beavertails. The net pinch reduction in the base configuration allows impressive shooters to get back in the game: several (willing!) volunteers told us the last 10 miles were too much, but the G40 proved comfortable and secure.
Trijicon RMR: Tempered glass lens, 7075 T6 aluminum housing, waterproof to 20 meters. Majestic. [Photo by Darren Parker]
The "comfortable and safe" was included in our review. In early loads, the 10mm was intentionally chambered in the powerful .41 Magnum. "Wallop" should come to mind. But the 10mm was quickly and vigorously developed by many ammunition manufacturers to keep up with the earlier pistols. Good news? These loads are soft pleasures in the G40.
These power levels continue today, and although they still have ramifications for the autoloader, 400 to 460 feet. Pound. (Federal's 180-grain FMJ performed extremely well in this area, producing sub-1-inch 5-shot groups and very smooth cycling), 10mm as a cartridge with the G40 as a vehicle is very capable. Fortunately, loads from Hornady, Corbon, Buffalo Bore and Double Tap give you a choice of cartridges from the original power levels or the latest ones.
Rock Island Armory All Metal, Striker Fired Stk100 Full Revi
We broke down our (now small) 170 grain JHP Norma to compare it to current loads in both power ranges. Our range was until we shot ballistic data for both.
Accuracy, although the latter is understandably damaged. Still, all five shots easily hit (landed) 8-inch plates at 50 yards, and the chronograph data was impressive: 1379 ft./sec and 717 ft.-lbs. Power. That's not too bad for a quarter century of ammo and factory standard and mail sights. New "full power" formulas from Corbon from 560 ft.-lbs. (one 200-grain FP flying anvil) up to 727 ft.-lbs. (135-grain JHP-a 1,558 ft./sec thunderbolt).
Several ideas emerged from our tests. Generous chambers in early Glocks helped establish a reputation for great reliability, but they were heavy on brass (overexpansion). Original 10mm power only accentuates this effect, and especially where the box/edge of the case is above the grommet on the barrel. Asymmetric knobs were an early Glock-produced brass offering as a result. This seems dangerously close to breaking the case and has worried some 10mm fans - not without reason.
That kind of abuse has long been passed on in high-powered benchmarks, and even in our G40 we couldn't find evidence of it in burn-in cases. A visual inspection and proper resizing in the reloading press didn't yield a hint of goop (even the fully powered Norma case looked fine and resized easily). Also, always carefully examine these cases of pressure signals.
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The second shot was comfort: in short, we found it great even with full power, the original Norma and modern series. Of course, you can't go wrong with a 9mm, but for a cartridge that can reach up to a black bear or deer in the right shooting position (check the rules for your range), the G40 10mm provides plenty of control and power just by keep it right. Position
The third is perhaps somewhat more effective: the extremely rugged 10mm case, a wide range of bullet weights, and excellent accuracy (our range manuals call the 10mm "an inherently accurate cartridge that routinely produces 10-shot groups of less than an inch. . ." ) caliber. This makes manual loaders attractive. As a hunting rifle or for other long-range pistol shooting purposes, the G40 may prove (in short) to have few equals. If you prefer, you can shoot the new Glock with conventional factory-set or aftermarket notch and post sights.
We saved the best for last. In addition to the other Gen4 goodies, the G40 comes with a Modular Optics Slide, or MOS. If you want, you can shoot the new Glock with conventionally set factory or aftermarket (we know our friends at Hiviz have litewave and tritium) notch and post sights. You will enjoy it.
But if your peers aren't up to snuff—and certainly not ours—you can now add a reflex or "red-dot" sight to the G40 in about 10 minutes. With the filler plate removed, a machined slot in the slide and one of the four (cleverly, conveniently supplied) base plates allow you to mount any micro-reflex sight you can name. In such a view the 10mm is at least a hundred yard gun and it is accurate. Especially with light shots in heavy loads, zip, accurate shots out to 100 yards were no problem.
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In its fourth incarnation, the 10mm stubbornly stuck to shooting life. Perhaps it is now clear why: very few are beginning to do what the 10mm easily does, and few pistols can still demonstrate the ability of the long-running Glocks line. With the G40, Austria's masterpiece achieves versatility and excellence.
If you're not familiar with red dot sights, you'll want to be: the optical principles on which they're based provide a clear point of aim for both.
A clear picture of the target. This is understandably a big deal if 20/20 is a happy memory. You simply let your remote control (via glasses, contacts or surgically) provide a clear target image, then place a precise point - the point of impact of the shot - on the target. Since it is not a laser marking technology, it is not "compared" to sunlight because the point will always be bright with a good quality view. In addition, the point does not require a visual center. If the dot is on your intended target, the dot will hit that spot even if the dot is centered in the optical window itself (if all goes well).
We chose the Trijicon RMR for testing, although mounts are available for a wide variety of others: EOTech, Docter, Burris Fastfire, and Leupold DeltaPoint to name a few. This rugged little bugger is well known in military circles for good reason. Incredibly strong and battery life
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Our sample put a very accurate 3.25 MOA dot on our hands. The 8-inch plates made a cinch out to 50 yards (without a break), and the 12-inch did over 50 percent.
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