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Riflery Basics For (___________) You Fill In The Blank..... Ladies Welcome, too! | |
| Lester Offer Upgrade  User ID: 49488977  United States01/16/2019 12:00 AM Report Abusive Post Report Copyright Violation | |
| Lester (OP) User ID: 49488977 United States01/16/2019 12:54 AM Report Abusive Post Report Copyright Violation | Rifle Basics.... The AR-15 should always be loaded from a magazine. The resistance of the round against the magazine lips slows the impact of the bolt against the round seated in the chamber. Single loading must be done carefully. The rifle ought be maintained regularly with lubricant on all moving parts. This includes the sear and trigger mechanism, the bolt carrier, the bolt locking lugs and possible application of grease to the recoil spring. I use synthetic 15wt 40 oil and synthetic grease. Greasing the bolt raceways in the upper receiver cut down on wear. It don't take much to lube with grease. The lighter oils, and there is a 90wt bicyclists oil that is very good, should be checked everytime the rifle is to be fired and afterwards when cleaned. A coated 36" swivel base cleaning rod, like the Dewey is excellent. A rod guide will prevent tipping and scoring, wearing the barrel or chamber. Always clean from the receiver and when brushing the barrel, don't let the brush exit the muzzle fully. Magazines need to be inspected and cleaned if dirty. Bore cleaning can be overdone. Using a quality copper remover like Barnes' #10 eliminates brushing wear on your rifling. Good Stuff about $10 for long lasting bottle. To patch-out fired powder debris, use carburetor cleaner. Scrub the barrel a few times with a correct sized barrel brush and use carburetor cleaner again. Oil your bore with light gun oil like Rem-Oil or 3-In-One sewing machine oil. You want to Patch-Out your barrel before firing. Oil in the bore can damage your barrel if not removed prior to firing. Maybe not of concern if your gun is a Blaster that you shoot mad-minutes regularly with; but a match quality or precision rifle like a Varmint AR will have an expensive barrel. No need to degrade accuracy by ignorance... Load your 30 & 20 rd magazines about 2 or 3 rds short. It prevents the springs from taking a "set" or weakening. The Sling can be a simple carrying aid, or an accuracy aid. The 1918 Military Sling is extremely versatile, and used for match shooting when made of super heavy leather or polyurethane. A Free Float Tube allows your sling to take much pressure from a firm position without putting pressure on the barrel. Barrel should remain unaffected and free to vibrate and keep its orientation at all times. For same reason, we rest our rifle forend/float tube on a limb or other support but never place the barrel in contact with a rigid surface. Sighting-in the rifle is done to enable hits at a Precise Distance; usually 100yds. The trajectory arc of the fired bullet travels up from the muzzle and then turns down at some distance. If zeroed at 100yds with 77gr match load already given, you will againg be On-Zero at about 275yds. This is called a Battlesight Zero. You can be sure of a HIT withing about 4" anywhere from 50yds to 300yds. The Sierra, and other, Ballistics programs can plot bullet flight based on Ballistic Coefficiency of each bullet design at a given speed. Very worthwhile info to be able to generate... To hit at greater than BSZ distance the rear sight or scope reticle is raised so bullet hits higher or further, if you will. Increasing the elevation causes the rifle muzzle to point at a greater angle. It's all about geometry and elevation and barometric pressure, And The Wind to get hits at longer distances. With a Hashmark reticle, you have a grid by which to raise the rifle a known amount; usually one Mil with sub markings of .10 mils, or One MOA with 1/10 MOA markings. These should correspond to your elevation and windage dials on scope or rear sight. The aperture rear sight is capable of extreme accuracy, but a scope eliminates aligning the front and rear sight by its crosshair design. Only ONE focal point in your sight picture rather than two. It is typically faster to use at longer distances. The Wind blows a lightweight bullet at great distance or when its blowing hard, like over 10mph. The Wind can change due to terrain at long distances. The air is thinner at higher altitudes, and barometric pressure also differs when at the extremes of it barometric register. Lots to consider when shooting over 500yds, or over 300yds if shooting targets competitively. For self-defense and hunting ranges probably not as much to calculate. You're not trying to thread a buttonhole over the heart of an enemy, you just want a hit. Animals have fairly large vital zones center chest or leg-breaking shot captures your game pretty quickly. Handloading gives you the option to use Premium Bullets like Nosler or Barnes for game-getting with your AR-15. The Barnes Partition is exceptionally well-proven. Hunting with an AR-15 with right bullet means you stalk closer for your best shot. The gun is easy to shoot, you've sighted-in with your load of choice. Get as close as you can and take home your meat... |
| Lester (OP) User ID: 49488977 United States01/16/2019 01:06 AM Report Abusive Post Report Copyright Violation | Unable to own an AR-15 in your state? The Tikka T-3 in .223rem in stainless with a 1:8 Twist barrel will stabilize the 77gr match bullet and maybe the 80gr. It is a lightweight, accurate sporting rifle with detachable magazine. Highly recommended. Tikka also offers heavy-barreled Varmint and Tactical rifles. A heavy barrel will absorb more heat before affecting accuracy and gives greater stability because of its weight. A Harris Bipod or other device can enable great precision in the field. In the 2008 issue of Canada's Dominion Rifle Club magazine, a member reported their 1000yd results with a .223rem chambered bolt rifle with 1:6.5 twist heavy barrel which allowed shooting of 90gr VLD Sierra bullets. Groups of 20 rds averaged 2" spreads vertically at 1000yds! 10 or 15 sets of targets were shot, each with very similar vertical grouping at 1,000yds.... The AR-15 when outfitted with heavy barrel and heavy float tube can deliver similar results at up to 850 or 900yds. The AR-15 Varmint rifle models once built by Armalite are excellent, Rock River made a few models with heavy varmint barrels, but custom makers like Whiteoak, Compass Engineering, Wilson, and Satern can build Precision Longrange AR-15s or provide just a Built Upper Receiver. The weight saving on .223 ammunition is about 2 or 3:1 versus the .308win. You can carry 500rds of 5.56x45 versus 200 of 7.62x51, or 175 of .30-06. While a light barreled AR-15 with fiberglass float tube might weigh 7lbs, the AR-10 so equipped will weigh closer to 10lbs. A heavy-barreled AR-15 might go 9.5lbs while a heavy AR-10 will be closer to 12lbs. As to Bullet Construction... The 75/77 gr match Bthp has a super-tough jacket. I have fired my handloads into Rock and Gravel backstop and all bullets I've ever recovered have held together, albeit some bent like pretzels. No matter what they hit, they don't shatter. There is a school of thought that prescribes to light 55/62gr bullets for their Fracturing wound producing effect. These damage any game you take for food, and they aren't effectively accurate beyond 350yds. Remember the 77gr at 2700fps hits at 500yds like a 1600fps .357mag 158gr does at 25yds. Lots of power and Great Accuracy with that bullet. Military uses the 77gr match ammo in the SAW light machinegun. If they issued ONLY this ammo to the troops even the M-4 carbines w/14" barrels would benefit. Yet, nothing beats the 20" barrel except a 22" or 24" An 18" is a decent compromise. The 20" rifle is also equipped with a gas system that is less battering to its brass. Important if you reload your fired cartridges. One last thing, the AR-15 w/20" barrel also looks about the same as any other ordinary AR rifle. A sniper carrying a bolt gun is a more easily identified target. Of course, you do the slow-crawl to avoid detection on infitration and exfiltration; but it don't always work the way you plan... No other rifle has the AR-15's capability for fast precise delivery of rounds on target. Unless you live in Alaska in Brown Bear ranging area, the AR-15 will Do It All... Last Edited by Lester on 01/16/2019 01:24 AM |
