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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cold bore blues.
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<blockquote data-quote="Greyfox" data-source="post: 1351416" data-attributes="member: 10291"><p>I agree with this, and comments about dry firing practice. I will test for cold bore accuracy at least 6 times on separate days before I am confident of the actual performance. While I have rifles that will print sub .25MOA groups in controlled warm bore conditions, expecting cold bore performance to this level may be unrealistic. I'm happy when I can get at least .5MOA on different days, temperatures, etc. Most of my rifles require a bore that is fouled at least 10 shots to do this. If a rifle doesn't produce cold bore accuracy but is reproducible, I will set up for the first shot POI (for hunting) and adjust for follow-ups if required. This all assumes the bedding, mounts, scope has checked out OK and cold bore vs warm bore velocity is within 10-15FPS. If first shot performance continues to be erratic/problematic(+.5MOA) I go back to basic load development. Last point. I have found that some barrels need 100-200 rounds through them before they stabilize and produce stabile velocity and cold bore consistency.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1351416, member: 10291"] I agree with this, and comments about dry firing practice. I will test for cold bore accuracy at least 6 times on separate days before I am confident of the actual performance. While I have rifles that will print sub .25MOA groups in controlled warm bore conditions, expecting cold bore performance to this level may be unrealistic. I'm happy when I can get at least .5MOA on different days, temperatures, etc. Most of my rifles require a bore that is fouled at least 10 shots to do this. If a rifle doesn't produce cold bore accuracy but is reproducible, I will set up for the first shot POI (for hunting) and adjust for follow-ups if required. This all assumes the bedding, mounts, scope has checked out OK and cold bore vs warm bore velocity is within 10-15FPS. If first shot performance continues to be erratic/problematic(+.5MOA) I go back to basic load development. Last point. I have found that some barrels need 100-200 rounds through them before they stabilize and produce stabile velocity and cold bore consistency. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cold bore blues.
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