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Hunting
The Basics, Starting Out
Bullet drop compensation dials (BDC dials)
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<blockquote data-quote="jwp475" data-source="post: 109295" data-attributes="member: 3776"><p>I think that all of the confusion is because many scope manufacturers directions explain that their scope move 1/4" per click at 100 yards,but on the turret it reads 1/4 moa.We must understand that 1 moa is 1.0472 inches per one hundred yards(1/4 moa is .2618" not .250" which is 1/4"),so if the scope moves 1" per 4 clicks then the scope adjusts in inches and not minutes of angle.The scope makers and many gunwriters add to this confusion by aserting that 1" = 1 moa.If this is not understood then elevation correction at long range will be of by a cosiderable margin.Pretend that you need 20 minutes of angle of verticale adjustment at 1000 yards and your scope adjustments are in quarters therefore 80 clicks adjustment will adjust for 200 inches of correction at 1000 yards.Now let's say your scope adjusts in minutes of angle the same 80 clicks will allow for a correct of 209.4 inches at 1000 yards.</p><p> The programs could easily be made to give correction either way. Also the scope makers could just make the scope adjust in minutes of angle as well</p></blockquote><p></p>
[QUOTE="jwp475, post: 109295, member: 3776"] I think that all of the confusion is because many scope manufacturers directions explain that their scope move 1/4" per click at 100 yards,but on the turret it reads 1/4 moa.We must understand that 1 moa is 1.0472 inches per one hundred yards(1/4 moa is .2618" not .250" which is 1/4"),so if the scope moves 1" per 4 clicks then the scope adjusts in inches and not minutes of angle.The scope makers and many gunwriters add to this confusion by aserting that 1" = 1 moa.If this is not understood then elevation correction at long range will be of by a cosiderable margin.Pretend that you need 20 minutes of angle of verticale adjustment at 1000 yards and your scope adjustments are in quarters therefore 80 clicks adjustment will adjust for 200 inches of correction at 1000 yards.Now let's say your scope adjusts in minutes of angle the same 80 clicks will allow for a correct of 209.4 inches at 1000 yards. The programs could easily be made to give correction either way. Also the scope makers could just make the scope adjust in minutes of angle as well [/QUOTE]
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Hunting
The Basics, Starting Out
Bullet drop compensation dials (BDC dials)
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