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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Could I be losing 350-400 fps in my rifle vs factory ammo published data
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<blockquote data-quote="Fursty" data-source="post: 1005537" data-attributes="member: 85023"><p>So here is my challenge. Shooting. Remington 783 7mm mag with Bushnell Trophy XLT scope with DOA reticle. </p><p></p><p>Zeroing rifle at 100 yds and then using Ballistic calculator and bullet published velocity and ballistic coefficient to figure bullet drop. (Using Ballisitic AE App)</p><p></p><p>Then adjusting turret for bullet drop and shooting at 400-500 yd targets. </p><p></p><p>Shooting Federal Fusion 150 gr 3050fps .509 bc. And Hornady 154 gr SST 3100 fps .525 bc. </p><p></p><p>The results have me always low at the 400-500 yard targets. When I use the ballistic calculator to find my true velocity, I come up with 2712 fps on the Federal ammo and 2791 fps on the Hornady. </p><p></p><p>So it is not the ammo as tried two kinds with same result. </p><p>Brand new range finder so I suspect it is ok but not verified. </p><p>I verified the scope with a yard stick on the wall, stationary scope and adjusted the turret to see that the clicks match the expected vertical distance change. </p><p></p><p>Is it possible to lose 350-400 fps from the gun?</p></blockquote><p></p>
[QUOTE="Fursty, post: 1005537, member: 85023"] So here is my challenge. Shooting. Remington 783 7mm mag with Bushnell Trophy XLT scope with DOA reticle. Zeroing rifle at 100 yds and then using Ballistic calculator and bullet published velocity and ballistic coefficient to figure bullet drop. (Using Ballisitic AE App) Then adjusting turret for bullet drop and shooting at 400-500 yd targets. Shooting Federal Fusion 150 gr 3050fps .509 bc. And Hornady 154 gr SST 3100 fps .525 bc. The results have me always low at the 400-500 yard targets. When I use the ballistic calculator to find my true velocity, I come up with 2712 fps on the Federal ammo and 2791 fps on the Hornady. So it is not the ammo as tried two kinds with same result. Brand new range finder so I suspect it is ok but not verified. I verified the scope with a yard stick on the wall, stationary scope and adjusted the turret to see that the clicks match the expected vertical distance change. Is it possible to lose 350-400 fps from the gun? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Could I be losing 350-400 fps in my rifle vs factory ammo published data
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