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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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<blockquote data-quote="Michael Eichele" data-source="post: 633003" data-attributes="member: 1007"><p>The VV N500 series powders are alot like RL-17. Lots of velocity potential. I used to run N-540 in my 308 for 168-190 grain bullets and N-550 for the 208 AMAX. I used RL-17 a bit but to get top velocities with it the seating depth of the bullets was out of where I like to be. N-540 and N-550 allowed for less powder at similar velocities and the powder was a bit finer which let it settle better. 46.0 under the 208 AMAX allowed for 2615 FPS and could seat them deep enough to fit my 700SA with an extended magainze.</p><p></p><p>I agree on the TOF and subsequent laser flat trajectory but you are right also about the windage sucking. </p><p></p><p>Max, I realize you are prepared for 'relatively' short barrel life but do you know how short? I would be suprised if it went 100 rounds running 120's at 4000 FPS. Even if you had a 28" barrel. Her life will be not relatively short it will be downright non-existent. RUM case rifles (7mm-300) can last a good bit IF you don't hot rod them. You hot rod it, you pay the price.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 633003, member: 1007"] The VV N500 series powders are alot like RL-17. Lots of velocity potential. I used to run N-540 in my 308 for 168-190 grain bullets and N-550 for the 208 AMAX. I used RL-17 a bit but to get top velocities with it the seating depth of the bullets was out of where I like to be. N-540 and N-550 allowed for less powder at similar velocities and the powder was a bit finer which let it settle better. 46.0 under the 208 AMAX allowed for 2615 FPS and could seat them deep enough to fit my 700SA with an extended magainze. I agree on the TOF and subsequent laser flat trajectory but you are right also about the windage sucking. Max, I realize you are prepared for 'relatively' short barrel life but do you know how short? I would be suprised if it went 100 rounds running 120's at 4000 FPS. Even if you had a 28" barrel. Her life will be not relatively short it will be downright non-existent. RUM case rifles (7mm-300) can last a good bit IF you don't hot rod them. You hot rod it, you pay the price. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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