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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Rem 700 VS w/ 20 moa mount question
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<blockquote data-quote="NZZYTB" data-source="post: 15988" data-attributes="member: 1011"><p>Milanuk</p><p></p><p>In response to your question about bullet drop and seating the bullets long, I expected to need a total of about 43 additional moa to get from 100 yard zero to 1000 yards. Since my sight adjustment required 52 additional moa, I suspected that the bullet velocity was slow causing the exessive drop. My speculation was that the increased case volume, as a result of seating the bullet .110" longer than the suggested 2.800" over-all length that ammo manufactures such as Black Hills use, was a contributor to decreased velocity (less initial pressure). Since I don't presently own a chronograph, I had no way of telling what the velocity of my hand loads were, and if seating the bullets long (within .010" of the rifle lands) was having an adverse affect on my long distance shots. That is why I asked if seating the bullets closer to the rifling might be a cause of my problem, and if I needed to compensate with a slightly higher powder charge. I've been holding until I could afford the Ohler 35P chronograph. Another $120 for the Nightforce mount keeps me just that much further from my goal. I didn't want to spend the $ for the 40 moa mount without asking for advise from more experienced shooters.</p><p></p><p>I spoke with Jeff at Nightforce this morning and his suggestion was to replace the 20 moa mount with the 40 moa mount and see if that corrects the condition. I ordered the mount this morning.</p><p></p><p>I'll reply back after I have installed the new mount and checked my zeros.</p><p></p><p>Any comments on reduced velocity as a result of increased case volume (seating bullets longer)from anyone? Any other advice is appreciated.</p></blockquote><p></p>
[QUOTE="NZZYTB, post: 15988, member: 1011"] Milanuk In response to your question about bullet drop and seating the bullets long, I expected to need a total of about 43 additional moa to get from 100 yard zero to 1000 yards. Since my sight adjustment required 52 additional moa, I suspected that the bullet velocity was slow causing the exessive drop. My speculation was that the increased case volume, as a result of seating the bullet .110" longer than the suggested 2.800" over-all length that ammo manufactures such as Black Hills use, was a contributor to decreased velocity (less initial pressure). Since I don't presently own a chronograph, I had no way of telling what the velocity of my hand loads were, and if seating the bullets long (within .010" of the rifle lands) was having an adverse affect on my long distance shots. That is why I asked if seating the bullets closer to the rifling might be a cause of my problem, and if I needed to compensate with a slightly higher powder charge. I've been holding until I could afford the Ohler 35P chronograph. Another $120 for the Nightforce mount keeps me just that much further from my goal. I didn't want to spend the $ for the 40 moa mount without asking for advise from more experienced shooters. I spoke with Jeff at Nightforce this morning and his suggestion was to replace the 20 moa mount with the 40 moa mount and see if that corrects the condition. I ordered the mount this morning. I'll reply back after I have installed the new mount and checked my zeros. Any comments on reduced velocity as a result of increased case volume (seating bullets longer)from anyone? Any other advice is appreciated. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Rem 700 VS w/ 20 moa mount question
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