You're not zeroing at 25 yards. The sighting axis of my red dot scope is about 2" above the bore axis, so from ballistics tables I figured the Point Of Impact to be about .9" below the Point Of Aim at 25 yards would approximate a 100-yard zero for my 150-grain .308 FMJ BTHP. Wouldn't parabolic zero be the distace at which your projectile drop equals the distance of your scope height above barrel center. Or if your scope ht of 3" and your 300 Win Mag 190 gmm drops 3" at 118y, then parabolic zero is 118y. Actually, MRT occurs a little beyond the half-way point – like around 115 for the 200-yard zero, and 170 yards for the 300-yard zero. How to Zero a Riflescope at 100 Yards. I just put up a bigger target like a 24"x24" and shoot at the dot I put in the center. At 300 yards it has dropped around 13 inches, and at 500 yards it’s just under 60 inches (5 feet). The legend is that a 25-yard zero will be about right at 100 yards, but this is not true. Hey guys, so I am wanting to zero my rifle at 300 yard zero with 55 grainers, this can be achieved by either zeroing at a 300 yard target or a 36 yard target. Initial POA/POI is 55 yards, giving a 50 yard … Since the dope chart above works out to 0.2" low at 300 yards, with a 25-yard zero, I set the MaTech rear sight at 300 yards to dothis 25-yard zero. It’s also easier to find a range that can accommodate sighting in at 25 yards opposed to 100 yards. And with this 50/200 zero when you aim dead […] I use my .223 for varmints out to 500 yards so I shoot a 50g VMax at 3450 fps zeroed at 200 yards. There are ballistics programs that will give you the precise 25-yard impact. But what I really do now to sight in my .308 and .30-06 is sight them in 2 inches high at 100 yards. That means that with a 100-yard zero, the bullet will rise ½ inch above line of sight at 50 yards; 1.8 inches above at 100 yards with a 200-yard zero, and 4.7 inches above at 150 yards with a 300-yard zero. A 50 yard zero allows the shooter to use a simple center-mass hold to ranges of point blank to 200-250 yards, depending on rifle and ammunition combination. 25 Yard Zero – I don’t care at all for sighting in at 25 yards. It adjusts from 200 to 600 in 100-steps, and it's got a 350 step in there, too. Hold over about 3" at 200. I was wondering if it was shooting low because it was bore sighted at about 200 yards or something like that. If so I only want to bring it to the left to compensate for the inch off to the right. I zero ALL of my rifles for 200 yds., .223's, .270's, 30-06's, .308's and my 6.8x43. For the 129g SST in the same rifle 1 inch high gives me apx 170 yard zero and apx 1 -1.5 inches low at 200 yards. One of the most popular “Battle sight” zeros for the AR-15 is the 50/200. 200 meters. TABLE TWO 100 Yard Zero – Not a bad option at all. federal .308 168 GR Boat Tail) You would then go to federalpremium.com and look at where the 50 yard trajectory is when the zero is set to 300 yards. Later he handed me a M16 (.223) and me to sight it in at 25 meters and I should be able to hit a man size target at 250 meters. Because at 25 yards you won't be off paper as much as at 100 yards just by eyeing it. dont have an opportunity to use private property as a range so im stuck to the local one which starts at 100 yards. So if you have a scope ht of 2.0" and your 308 fed 168 gmm drops 2.0" at 85yd, then parabolic zero is 85y. Moderator Tools: Show Printable Version. You can print drop tables to figure where you might hit at 300 but there are so many variables that you need to shoot at 300 to confirm that zero. If you zero for 200 yards, your 100 yard holdover is about 1.4". I am assuming that your Mini-Thirty has a 16" barrel and the velocity is somewhere around 2350 ft/sec. Which essentially means you zero at 50 yards and your bullet will hit the same point of aim at 200 yards. If you desire to sight in any rifle at 300 yards and you only have a 50 yard range you would simply look at the ballistic table for the type of ammo your shooting (I.E. I plan on pushing federal gold match 168 gr. No matter which I shoot I always know where it's going to hit no matter if I'm hunting or killing paper. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. With a zero of 100 yards the .223/5.56 round will impact approx 3/4″ low at 50 yards and around 2.25″ low at 200 yards. If the height of the scope changes (or … When zeroed at 25 yards the round will also be zeroed at 300 yards. Next, let's look at 308WIN, same manufacturer, 150 grain FMJ. So my question to the experts is a 100 or 200 yard zero? At a 100 yard zero, the bullet should be about 7 inches low at 200 yards. Just getting the scope on paper. 08/23/2019 ... at 100 yards instead of shooting dead center in order to better prepare for 200-plus yard shots. I plan on using it for some local competitions that reach out to the from 100 - 700+ yards and use it for hunting in under 500 yard range. That leaves me a 1" holdover at 100 yards and follows mil-dots perfectly out to 500 yards. It should be about 10" low at 225 yards or approx. For those that have attended the courses now know that when it comes to your go-to 5.56 caliber carbine rifle that you would pick because it is best suited for all possible scenarios, the 36 yard zero seems to be the perfect fit. Then I shot at 200 and 300 yards … “With a 100-yard zero, there’s just that easy one-to-one correspondence,” says Vaughn. So with a 200 yard zero, a hunter can hold dead on from 0 to 257 yards and kill the animal, assuming he does his part and fires an error-free shot. The 36 Yard Zero Target. Now you must do some fancy calculating. If you zero that same .308 for dead-on at 25 yards, you'll be 2.6" high at 100y. If I dont have access to a 36 yard target can I achieve a 300 yard zero at 25 yds by shooting .2 inches high at 25 yds? This works, kind of. For example, the cataloged short-range zero for Remington's 150-grain SPCL .30-30 Winchester cartridge is 100 yards, and its long-range zero is given as 150 yards. Zero Range: 0 yd Chart Range: 1000 yd Maximum Range: 5905 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 200 yard group, 308 200 yard zero, black hills match 155, convert 50 yd zero to 100 yard on m1a scout, m14 200 yards, m14 bz at 100 yards, zeroing 308 at 100 vs 200 yards. The following is a 1000 yard .308 ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 1,000 yd mark. At 1,000 yards, that translates to 10-inch or 10 MOA groups. ARMA DYNAMICS recommends a 50 yard zero for your AR-15 rifle. zero. Actually I use the 25 yard first method and don't even eye it at 25 yards. My come ups are 3.5 moa to get centered at 300 yards, another 12 to 12.5 moa to be centered at 600. if you zero at 200 yards you'll never be over or under 3" high or low all the way to around 230 yards. Never been off paper yet. Why a 25 yard zero? The 300 yard zero would be very practical, however if you don't have a range to shoot the 300 yards to confirm the zero, I would not use that. Initial POA/POI is at 36 yards, but now, the difference is .5 inches at the 50. If you have an AR-15, then you need to zero it. In the recent carbine courses we have discussed various yard lines to zero your rifles along with the pros and cons of each yard line. Using an MPBR zero, you can also zero at shorter ranges. Assuming a 168gr .308 cal round at 2700 fps, if your scope is mounted 1.5" over the bore and you zero for 1" high at 25y, you will be 6.7" high at 100y. This places that same .270 bullet 0.4 inches low at 25 yards, 1.41 inches high at 100 yards, 2.51 inches low at 250 yards and finally slips below the 6-inch vital zone at 257 yards. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. I don't have access to a 100-yard range, but I can get about 80 yards at Wilson Shoals WMA. With a 1" low at 25 yards zero, I'm about 1.5-2" high at 80 yards. I shoot 168 grain SMK's 90% of the time through .308. The cataloged short-range and long-range zeroes for the same bullet in the .30-06 Springfield and the .300 Winchester Magnum are the same: 150 yards and 200 yards. Fifty yards is our initial intersection, and 200 yards is our true zero. I zero every high power rifle I own for 200 yards and work off that zero. There are many factors that affect where a certain cartridge will impact at 25 yards with a 100-yard zero. Next, let's look at a Federal Power-Shok 22-250 55 grain PSP...again, zeroed at 200. “You can figure it in your head.” But if your zero is at 200-yards, 250-yards or 300-yards, and your target is at 725 yards? and will max it out the range at 1000 but most of my shooting will probably be done under 800. – You want to zero your rifle in at 25 yards because it will allow you to have accurate shot placement from point blank to about 300 yards. but i dont have any info for 50. whats the average impact at 50 with a 168gr 308 with a 100 yard zero is it high or low. When I shot my new .270 at about 50 yards, it was about 2 inches low and an inch to the right. You've studied that chart, and you know that with a 100-yard zero your bullet will hit about 1.2 inches low at 150 yards, 3.75 inches low at 200 yards, and a whopping 14.25 inches low at 300 yards - should you ever dare to shoot that far. Email this Page. To test this, look at Tables Three and Four, where we again use Blatt's data for this same Federal Supreme round, this time converting the trajectory from a 100-yard zero to a 500-yard zero. Click on a term to search for related topics. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. Display Modes: Step 4: You want your bullet to impact 1-inch low from the center of the 25-yard target to be able to hit your target at 100 yards. I can zero at 50 yards and know I can still land a shot at 200 yards. Take a ruler to the range. 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