tightloop Posted May 1, 2003 Share Posted May 1, 2003 Minute of angle is constant, 1" at 100 yds, 2 " at 200 etc. we know that. Assuming the same bullet at the same velocity, the question is this: If you have .25" clicks at 100 yds, it is .5 at 200 yds and what after that? Does it increase exponentially or how. Is each click 1" at 300 per click and 2" at 400 yds per click or what ? Does it increase exponentially or what. Link to comment Share on other sites More sharing options...
kurtm Posted May 1, 2003 Share Posted May 1, 2003 Tightloop: Think of your .25 inches at 100 yards in a more general sense of .25 of a minute!(which is an arc measurement, hence the "minute of angle"). Each "click" moves the point of impact of the bullet 1/4 of a minute of angle. This is a constant value, not exponential! there fore at 300yds it would move point of impact .75" at 400yds 1", at 500yds 1.25", at 600yds 1.5", at 700yds 1.75", at 800yds 2" at 900yds 2.25", at 1000yds 2.5" and so on... The formula for you would be .25X distance= impact shift. KURT Link to comment Share on other sites More sharing options...
EricW Posted May 1, 2003 Share Posted May 1, 2003 tl, The equation for this relationship is: S = R * Theta S is the arc subtended by the angle theta. R is the distance from the target. The relationship is linear. I'll try to find a pic to clear it up. In short, listen to Kurt.... Link to comment Share on other sites More sharing options...
EricW Posted May 2, 2003 Share Posted May 2, 2003 Here's a picture: For more info, click here. Link to comment Share on other sites More sharing options...
Sam Posted May 2, 2003 Share Posted May 2, 2003 Tight, if he's a hunter, it might be easier to explain "minute of Elk" to your buddy. That's anywhere inside in a 10" circle out to 300 yds. Link to comment Share on other sites More sharing options...
lynn jones Posted May 2, 2003 Share Posted May 2, 2003 damn ericw, you need a real job. Link to comment Share on other sites More sharing options...
KyleL Posted May 2, 2003 Share Posted May 2, 2003 Fellas, If you are interested here is a link to an article written by a friend of mine. Talks about alot of this info as well as Mil Dots. Mildot info Hope it works. ADIOS KyleL Link to comment Share on other sites More sharing options...
Tuner-1911 Posted May 2, 2003 Share Posted May 2, 2003 One inch per 100 yards is a close estimate...The actual figure is 1.0471 inch...if you want to get nitpicky. Geometry! Tuner Link to comment Share on other sites More sharing options...
tightloop Posted May 2, 2003 Author Share Posted May 2, 2003 very nice, thank you all. I try not to shoot at anything past 250 yds but my bud has a deer lease in West Tx, and wants to try his luck at 600 to 1000 yds with his bolt 50BMG. Now I know why I failed trig twice!! If he still has any questions, I will send him to the Math Dept at Rice Univ. Thanks again. T Loop Link to comment Share on other sites More sharing options...
lynn jones Posted May 2, 2003 Share Posted May 2, 2003 thanks erikw and kylel, i checked out this information and there's a lot to learn. : lynn Link to comment Share on other sites More sharing options...
MattBurkett Posted June 4, 2003 Share Posted June 4, 2003 If you want to learn more about MOA and distance shooting go to: Shooter Ready Link to comment Share on other sites More sharing options...
Patrick Sweeney Posted September 11, 2003 Share Posted September 11, 2003 Short answer, one inch per hundred yards is your MOA amount. Long answer, are you talking surveying mils, artillery mils, or who-knows-what mils? Link to comment Share on other sites More sharing options...
DogmaDog Posted December 16, 2003 Share Posted December 16, 2003 A "mil" is an angle that subtends an arc 1m long at a distance of 1000 m (1000m * sin (1mil) = 1 m) A "minute of angle" is 1/60th of a degree. There are 60 x 360 = 21600 minutes in a circle. The circumference of a circle with 100 yard radius is 22619.467" So there are 1.047 inches per minute at 100 yards. DD Link to comment Share on other sites More sharing options...
Gun Geek Posted December 19, 2003 Share Posted December 19, 2003 TL: Did your buddy get a deer with the 50? That's a lot of bullet! The ballistics of that bullet indicate that it has lots of energy at 1000yds - what condition was the deer in after the impact? Link to comment Share on other sites More sharing options...
tightloop Posted December 19, 2003 Author Share Posted December 19, 2003 GG he has actually shot several. None at over about 600 yds I think. Doesn't do much to them. Kind of pokes a half inch hole thru them and they fall down. 600+ grain bullets don't do much on 110 pound deer. He's an idiot for hunting with it. If he wants to shoot 1000 yds get into that type of shooting. No animal deserves to be sniped at from that distance regardless of the circumstances. Link to comment Share on other sites More sharing options...
Merlin Orr Posted December 19, 2003 Share Posted December 19, 2003 Mr Sunshine If he wants to shoot 1000 yds get into that type of shooting. No animal deserves to be sniped at from that distance regardless of the circumstances Maybe a ground squirrel - or a Talaban's Turbin...I agree. Link to comment Share on other sites More sharing options...
Liota Posted December 20, 2003 Share Posted December 20, 2003 TL, 600 yards is kind of wimpy for a 50 BMG, isn't it? My 300 WinMag will go to 900 pretty easily... That's because the range is only that long. Liota Link to comment Share on other sites More sharing options...
tightloop Posted December 20, 2003 Author Share Posted December 20, 2003 Liota Yup, 600 is short for a 50 BMG, he has it sighted in for 800, shooting a 650 gr HPBT of some kind. The guy who built my buds 50 used to work for the company, and said when he was active, he could hit a vehicle sized target at 1.5 miles...That is a little more what it was designed to do, not shoot a 100 lb deer at half a mile. Link to comment Share on other sites More sharing options...
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