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Rifles, Reloading, Optics, Equipment
Reloading
7 RUM 195 berger
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<blockquote data-quote="TheDerkster" data-source="post: 1193943" data-attributes="member: 92447"><p>So in general, your twist rate is somewhat based off RPM. So velocity definetly comes into play here, but not totally. I dont wanna get reamed for saying something incorrect...</p><p></p><p>But Im running a 1:8 28" krieger on a 7mm Sherman shortmag and I was getting great results with the 195 considering I had no load developement. Probably running 2800 ish FPS but I haven't chronographed it yet. I was cloverleafing or leaving one jagged hole at 100. </p><p></p><p>My point is that 1:8 is sufficient, but Ive never heard anybody say 1:9 is gonna perform like you want it to. Especially when velocity starts to drop off and you get out to long range. You may waste your time developing a good load that wont hold its own at range.</p></blockquote><p></p>
[QUOTE="TheDerkster, post: 1193943, member: 92447"] So in general, your twist rate is somewhat based off RPM. So velocity definetly comes into play here, but not totally. I dont wanna get reamed for saying something incorrect... But Im running a 1:8 28" krieger on a 7mm Sherman shortmag and I was getting great results with the 195 considering I had no load developement. Probably running 2800 ish FPS but I haven't chronographed it yet. I was cloverleafing or leaving one jagged hole at 100. My point is that 1:8 is sufficient, but Ive never heard anybody say 1:9 is gonna perform like you want it to. Especially when velocity starts to drop off and you get out to long range. You may waste your time developing a good load that wont hold its own at range. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7 RUM 195 berger
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