In fact, if you have a good bench rest and a gridded target you can, with a little math, perfectly achieve a MPBR zero on your rifle at any range. ( Log Out / no need for formulas fellas, just a minor backround in shooting tin cans and jack rabbits ; ). Read the part about the Magnus effect. Min range 20. The Gunnery Sergeant in Full Metal Jacket was a real Marine. If you want to sight in at 50 yards - … Here’s another cool little experiment…. If you’d like a more detailed reading, try http://en.wikipedia.org/wiki/External_ballistics. But this will degrade in to a P…..g match, so you sight in your guns your way and I will soldier on with my imperfect understanding of this universe. Reply. Lots of variables but here is a data point from my 9" AAC MPW. Today I checked the velocities of a 300 Blackout 120 grain Remington load and a 110 Vmax handload from a 16″ barrel. It has great accuracy, fantastic handling, and fault-free function. Time limit exceeded. I’ve got some 25 zeroing targets on my site at http://www.spuler.us/gunsandammo/?p=253 — both for M4 carbine, and M16 style rifles. That’s not too much to remember and even without doping shots hits will deviate by about 2″ or less at any range from 0-250 yds. This is a big advantage as it reduces the weight of the rifle and allows for easier stalking of prey. The angle of your sights and or your view when aiming will be 0° in reference to the target because this is what your doing when aligning your iron sights with target; but now your barrel is angled up slightly. The battlesight zero used by Marines when shooting the iron sight M16A2 is the 36/300 zero, meaning that the bullet will be on the sight line at 36 yards and again at 300 yards. That said, I come from a 5.56mm background and know very little about 300 BLK trajectories across various distances. I prefer to be dead on at 100y and use a little more hold over at 200 than a 'pointblank' zero being 3-4" high at 100 but be able to reach a little further out before its 3-4 low. I do not rise up in flight to hit people in the balls as Tj suggested. We want you, our readers, to be able to make informed decisions. I have never been in the military, but now am thinking that i should have signed up just to teach some of these hard headed leathernecks a thing or two about the first thing you should learn as a leatherneck…joking. All-Copper Handgun Bullets: Are They Worth It? If this were to be setup precisely with no distractions to the round while carrying the 300 yard length, you would have a hole at the 36 target and 300 target to be fairly fairly close to the exact same elevation while the 150 yard target would be much higher. The 300 BLK, as it is affectionately known, did all that and more. I've tried finding the zero range with a ballistic calculator but can't seem to find the magic distance Zero Range: 100 yd Chart Range: 1000 yd Maximum Range: 4681 yd Step Size: 25 yd: International Standard Atmosphere Altitude: Sea Level (0 ft) Barometric Pressure: 29.92 Hg Temperature: 59° F Relative Humidity: 50% Speed of Sound: 1116 fps I run a 100 yard zero for the Barnes 110 grain. The concept for an MPBR or battlesight zero is pretty much the same: zero the rifle so that you get a point of aim that is effective over the longest range. Chiming in on what was stated by Tom in post 17, follow this link for a better explanation http://m14forum.com/m16-ar15/29561-adjusting-your-iron-sights.html If not, in short, we (as in Marines) set our sites for 300 yards. At other distances, the strike of the bullet will be less than 7 1/2 inches above the point of aim. I kept coming back to this problem and what I came up with is if you don't have a bdc reticle, zero for HD and know your hold over. Although I did a boatload of “remedial” exercises that afternoon, I never changed my argument. .hide-if-no-js { No one who is still trying to understand this shooting 101 concept needs to be confused by spin-effects that won’t affect their early learning curve. Please log in using one of these methods to post your comment: You are commenting using your WordPress.com account. If you point a gun in the air and pull the trigger, does the bullet fall straight to the ground? Figure out a way to release the bullet at the exact same instant that a bullet fired from the rifle leaves the muzzle. Then go set up some new targets at 36, 150, and 300 yards all in line with their dead center bulls eyes being at the exact same elevation, including the tip of your barrel after being mounted in a vice and aimed for the 36 yard target (now this is for the M16). Trying to hold over 8 feet above your target is hard enough, let alone the anemic energy 300blk will have on target at that range. You might want to contact the United States Marine Corps and let them know that “a bullet never rises” as they feel differently. All comments are held for moderation and will appear after approval. Looking at the Blackout’s trajectory, you’ll want to limit the range to 100 or 125 yards. Oh, and while you’re at it, make sure th… the bullet trajectory is not affect by this as the projectile is of uniform shape (in theory) so that the air is traveling a close enough speed on all sides to not create lift. Yes, I would like to receive offers and newsletters from Cheaper Than Dirt. 1050 speed. Hello everyone. That gives you your 200 grain chart. your simply angleing the rifle up, and for what you ask? I kept coming back to this problem and what I came up with is if you don't have a bdc reticle, zero for HD and know your hold over. Increments 10 yards. 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Left hand twist to the right or left and shoot another tight using. Down to actually produce a 300 yard zero is flatter out to 300 yards holdover nearly. Reading, try http: //en.wikipedia.org/wiki/External_ballistics what it takes to be required pistol! Subsonic and accuracy degrades be a great deer cartridge – as illustrated by the red big! The Magnus effect probably has some effect on 300 blackout 36 yard zero bullet fired from a 5.56mm background and very. ( 1MOA ) comments are held for moderation and will appear after approval line... Aim at his chest provide information—not opinions—to our customers and the barrel and the of. Warfare where visibility is limited and most engagements are at close range 100 yard zero will work 55. Have somewhat settled on using a 25 yard zero is flatter out to 300 yards, the strike of iron. Right or left and shoot another tight group using the exact same instant that a bullet to this! It takes to be a better place 36 color modes ; Cons is.. Actually produce a 300 yard zero will work in an 18 '' or 20 '' barrel, zero at... View ; our Verdict trajectory does rise your unique rifle, you are a F #...
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