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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Length and Bullet Velocity Ratio
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<blockquote data-quote="TOM H" data-source="post: 805004" data-attributes="member: 306"><p>I shoot longer barrel than the loading data I'm using. Working up my loads I see an increase in velocity with my start loads and most times I'm at published velocity gr or two under max load.</p><p></p><p>Nosler start load for the 280AI with 26" long barrel was 57.5gr/IMR-7828 @ 2856fps with 160gr AB that same start load in my 27" long barrel was @ 2916fps which was gain of 60fps with 1" more barrel. </p><p></p><p>One of my 30-06 was playing around with some of Hodgdon data using H-4350 and 150gr E-Tip their barrel was 24" long mine was 25". their max load was 57.8gr/H-4350 @2927fps and my max load was 58gr @ 2998fps. Another 30-06 with 26" long barrel with 180gr Partition max in Nolser data is 2825fps I can run that easy 100fps more with varies loads.</p><p></p><p>I build a 300WSM with 26.5" long barrel and it's easy getting that extra velocity. I have pretty good list on gains with some of my barrels but in the end I stay pretty close to max velocity and nice to know don't need max powder. 30yrs ago when I was in my 40 looked at velocity little different. Well good luck</p></blockquote><p></p>
[QUOTE="TOM H, post: 805004, member: 306"] I shoot longer barrel than the loading data I'm using. Working up my loads I see an increase in velocity with my start loads and most times I'm at published velocity gr or two under max load. Nosler start load for the 280AI with 26" long barrel was 57.5gr/IMR-7828 @ 2856fps with 160gr AB that same start load in my 27" long barrel was @ 2916fps which was gain of 60fps with 1" more barrel. One of my 30-06 was playing around with some of Hodgdon data using H-4350 and 150gr E-Tip their barrel was 24" long mine was 25". their max load was 57.8gr/H-4350 @2927fps and my max load was 58gr @ 2998fps. Another 30-06 with 26" long barrel with 180gr Partition max in Nolser data is 2825fps I can run that easy 100fps more with varies loads. I build a 300WSM with 26.5" long barrel and it's easy getting that extra velocity. I have pretty good list on gains with some of my barrels but in the end I stay pretty close to max velocity and nice to know don't need max powder. 30yrs ago when I was in my 40 looked at velocity little different. Well good luck [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Length and Bullet Velocity Ratio
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