Range Report dumb leupold BDC question: settle a bet

[ker2222]

I have gotten into an argument with a friend and don't have what I need to settle it.....


he insists that the leupold M3 BDC dials for 308 168 grain and the 223 77 grain are identical. I have a hard time believing that....can anyone settle the bet???

 

[MitchAlsup]

Re: dumb leupold BDC question: settle a bet

http://www.opticstalk.com/forum_posts.asp?TID=15845

The 223 is calibrated for the 55 gr 3200 fpd loading.

Also:
http://www.snipercountry.com/hottips/ScopeLeupold_M3BDC.asp

 

[ker2222]

Re: dumb leupold BDC question: settle a bet

I do know that there are multiple 223/556 bdc's........

 

[Sandbogg]

Re: dumb leupold BDC question: settle a bet

I ran Blackhills 77 gn 223 at 2750fps and Blackhills 308 168 gn at 2650fps through the JBM calculator and they are very similar until 700 yards.
....223 / 308
100- 0... 0
200- 2... 2
300- 5... 5
400- 8... 8
500- 12.. 12
600- 17.. 17
700- 23.. 22
800- 29.. 27
900- 37.. 35
1000- 47.. 45

Your mileage may vary but I think your friend is right.

 

[JSTARSZ]

Re: dumb leupold BDC question: settle a bet

they may be ballistically close but they are two different cams.

 

[zink14]

Re: dumb leupold BDC question: settle a bet

The BDC drop is identical out to 500m then starts to deviate, i can take pics if need be...but it better be a big bet, and I want a cut lol!

 

[ker2222]

Re: dumb leupold BDC question: settle a bet

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: zink14</div><div class="ubbcode-body">The BDC drop is identical out to 500m then starts to deviate, i can take pics if need be...but it better be a big bet, and I want a cut lol! </div></div>


thanks.......while 500 yrds isn't nothing, it sounds safe to say that leupold does not simply "re-paint" the 308 dial.........I think that calls me the winner....

thanks guys.

 

[MitchAlsup]

Re: dumb leupold BDC question: settle a bet

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: zink14</div><div class="ubbcode-body">The BDC drop is identical out to 500m then starts to deviate, </div></div>

ONLY at those two velocities, and ONLY at whatever atmospheric conditions dialed into the BDC.

 

[zink14]

Re: dumb leupold BDC question: settle a bet

we are talking stock BDC i would assume