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Posted: 7/28/2006 8:01:06 AM EDT
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Hello, I've got a Nikon Buskmaster 4-18x42 mounted on my Bushmaster A3 flat top with Larue riser block and cl mount to bring the scope up so I don't have to pintch my cheek against the butt all the time. I tried zeroing it in yesterday. At 25 yards I was getting nice tight groups at 6:00 at the bottom of the bullseye ring. When I went to 50 yards the darn holes jumped up to 12:00, but about 7-8",s higher than at 25 yards. At 100yards they were somewhat lower but not much. Do these 223's have that much varaition in their tradjectory? I figured at their speed it would be much flatter. I really wanted to mount this scope on the carry, but didn't know if being that much higher than the bore would make it impossible to zero. I've read that some scopes have something built into their optics that compensates for that scope to bore difference. Any advice and explanations you have to offer would be appreciated. Thanks, Jim |
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Ammo Faq tacked to the top of the Ammunition Forum will have your trajectory issues covered.... Mounting a scope such as yours on the carry handle normal makes getting a consistent cheek weld difficult. (unless ya plan on using a Delta or similar cheek-rest) YMMV but I don't see that you have an actual problem zeroing here other than deciding at what range you want to zero at. For my scoped AR I zero at 100 yards, as that's where my come-up card is keyed, this way I can crank in the proper "minute" corrections and be on the money from 100 to 1000 yards. Mike |
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