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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Extreeme spread and tight groups
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<blockquote data-quote="308175" data-source="post: 29990" data-attributes="member: 1102"><p>Hey guys,</p><p></p><p> The other day I was out testing my favoraite load and come up with 120 FPS extreeme spread. The funny thing is this load will shoot groups in the mid .300's (5 shot) daily. Most of the velocities are very concistent, but 3 out of 10 got me thinking. What will this do at 600 or 800 or even 1k?? Is there something in barrel harmonics that will dictate good groups to 1k despite this 120 FPS differance? There is just a little air space in the loaded case. Is it possible for that little bit to do this? I am not sure what else could make 120 FPS of differance. Cases are matching and weight within 2 grains, bullets and powder are all off the same lot, primers too. All charges are the same and OACL is right on, necks are turned and tension is the same round to round. Should I be looking for a more dense load? Or am I beating a dead horse?</p><p></p><p>Load is: 308, RL15, Fed GMM primers,178 AMAX, 2.830" 24" BBL</p><p></p><p>Thanx guys</p><p></p><p>[ 12-18-2003: Message edited by: 308175 ]</p></blockquote><p></p>
[QUOTE="308175, post: 29990, member: 1102"] Hey guys, The other day I was out testing my favoraite load and come up with 120 FPS extreeme spread. The funny thing is this load will shoot groups in the mid .300's (5 shot) daily. Most of the velocities are very concistent, but 3 out of 10 got me thinking. What will this do at 600 or 800 or even 1k?? Is there something in barrel harmonics that will dictate good groups to 1k despite this 120 FPS differance? There is just a little air space in the loaded case. Is it possible for that little bit to do this? I am not sure what else could make 120 FPS of differance. Cases are matching and weight within 2 grains, bullets and powder are all off the same lot, primers too. All charges are the same and OACL is right on, necks are turned and tension is the same round to round. Should I be looking for a more dense load? Or am I beating a dead horse? Load is: 308, RL15, Fed GMM primers,178 AMAX, 2.830" 24" BBL Thanx guys [ 12-18-2003: Message edited by: 308175 ] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Extreeme spread and tight groups
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