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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Overbore???
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<blockquote data-quote="H-BAR" data-source="post: 27727" data-attributes="member: 1281"><p>I hear 3030fps is the magic number for 1000yd 223. When I work it out on my ballistics program 2900fps will have the bullet at 1152fps at 1000yds. I would say the extra 130fps is an insurance policy. If I were you I would prefer to shoot Berger or JLK or Hornady rather than Sierra. I have had excellent performance from the Hornady bullets from 75gr and down. My Colt will not stabilize an 80gr bullet due to it being a 1:9 twist. If your rifle has a 1:7 or 1:8 twist then the heavier bullets are for you. The powder to use for this achievement is is vv540. I use blc2 with the 68 and75gr hornady bullets but cannot get near the magic velocity for 1000yds. There are a few drawbacks to vv540. One is that guys rip case rims off and another is broken extractors from this powders slower burn curve cycling the action too hard!!! I have only shot critters out to between 5-600yds with my223. It is great for head shots on deer at those distances. What kind of 223 do you have? Mine is the 24" stainless barrel Colt elite HBAR 6724. Tis a fine shooting iron!!!</p></blockquote><p></p>
[QUOTE="H-BAR, post: 27727, member: 1281"] I hear 3030fps is the magic number for 1000yd 223. When I work it out on my ballistics program 2900fps will have the bullet at 1152fps at 1000yds. I would say the extra 130fps is an insurance policy. If I were you I would prefer to shoot Berger or JLK or Hornady rather than Sierra. I have had excellent performance from the Hornady bullets from 75gr and down. My Colt will not stabilize an 80gr bullet due to it being a 1:9 twist. If your rifle has a 1:7 or 1:8 twist then the heavier bullets are for you. The powder to use for this achievement is is vv540. I use blc2 with the 68 and75gr hornady bullets but cannot get near the magic velocity for 1000yds. There are a few drawbacks to vv540. One is that guys rip case rims off and another is broken extractors from this powders slower burn curve cycling the action too hard!!! I have only shot critters out to between 5-600yds with my223. It is great for head shots on deer at those distances. What kind of 223 do you have? Mine is the 24" stainless barrel Colt elite HBAR 6724. Tis a fine shooting iron!!! [/QUOTE]
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Overbore???
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