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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 ultra twist rate
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<blockquote data-quote="jkehley" data-source="post: 126234" data-attributes="member: 2136"><p>Thank you to all who responded. The thought process behind shooting the lighter bullets was to obtain better expansion on groundhogs. I have placed some good hits with 180gr Nosler BTs, 190gr Sierra MKs and Hornady A-max's and have not had clean kills. I understand that these bullets are intended for large game. I thought that if I drive a 150 to 165gr bullet to the max in the 300 ultra I might see expansion more like my 22-250ack on small game. </p><p>Kirby, I read your post and what you stated makes sense to me as to the accuracy issue with the light weight bullets (should have thought of this myself). In my mind I was blaiming the accuracy problem entirely on the 1 in 10" twist. Now I am scratching my head wondering if I should persue this idea at all. I crono almost every time I go to the range and will have to see if I saved my data from shooting the 165-168gr bullets. I think in my frustration with less than desired accuracy I may have thrown out this data.</p><p> Any recommendations on a twist rate for 180gr Nosler BTs and 180gr Siccroccos only at 3350-3375fps??? Thanx Jim</p></blockquote><p></p>
[QUOTE="jkehley, post: 126234, member: 2136"] Thank you to all who responded. The thought process behind shooting the lighter bullets was to obtain better expansion on groundhogs. I have placed some good hits with 180gr Nosler BTs, 190gr Sierra MKs and Hornady A-max's and have not had clean kills. I understand that these bullets are intended for large game. I thought that if I drive a 150 to 165gr bullet to the max in the 300 ultra I might see expansion more like my 22-250ack on small game. Kirby, I read your post and what you stated makes sense to me as to the accuracy issue with the light weight bullets (should have thought of this myself). In my mind I was blaiming the accuracy problem entirely on the 1 in 10" twist. Now I am scratching my head wondering if I should persue this idea at all. I crono almost every time I go to the range and will have to see if I saved my data from shooting the 165-168gr bullets. I think in my frustration with less than desired accuracy I may have thrown out this data. Any recommendations on a twist rate for 180gr Nosler BTs and 180gr Siccroccos only at 3350-3375fps??? Thanx Jim [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 ultra twist rate
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