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LR varmint .257 bullet options
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<blockquote data-quote="MOA" data-source="post: 9353" data-attributes="member: 237"><p>JD-- This rifle is my LR varmint rifle so I have only worked up loads for the 75 VMAX and 85 NBT. I'm getting about 3700 and 3550 respectively. I ended up with about a max charge with both loads (59.0 grains H4831. First day to the range holding .75 MOA at 200 yards for 5 shot groups is hard to beat. As with everything in life there are tradeoffs when it comes to bullets and deciding the optimum weight for the application. The lighter bullets for the 25 explode (can you say red mist?) on impact but have relatively low BC's. The heavier bullets will definitely have a higher BC but won't give you the "blow up" effect. The lighter bullets shoot flatter but I would rather have a heavier projectile that is affected by wind drift to a much lesser extent. We can't predict wind, but I can correct for elevation all day (gravity is constant). Overall I think With all things considered I think I'll go go for the 115 NBT--I won't have to work up another laod if ever want to use it for deer.</p><p></p><p>Here are some drop figures for you to get an idea of what the BC difference will do to traj.</p><p></p><p>Balistic tip 115gr = BC .453</p><p>Berger VLD 115gr = BC .522</p><p></p><p>115 NBT at 3000 FPS with 100 yard zero std.cond. drop in inches</p><p>400-25.4</p><p>500-46.7</p><p>600-76.4</p><p></p><p>115 berger</p><p>400-24.3</p><p>500-(my pocket PC just crashed but you get the idea)</p><p>600-72.0</p><p></p><p>Not too much of a difference. I will go with the NBT--$10 per 50. What kind of velocitites are you getting? Does anyone have good 115 grain load data?</p></blockquote><p></p>
[QUOTE="MOA, post: 9353, member: 237"] JD-- This rifle is my LR varmint rifle so I have only worked up loads for the 75 VMAX and 85 NBT. I'm getting about 3700 and 3550 respectively. I ended up with about a max charge with both loads (59.0 grains H4831. First day to the range holding .75 MOA at 200 yards for 5 shot groups is hard to beat. As with everything in life there are tradeoffs when it comes to bullets and deciding the optimum weight for the application. The lighter bullets for the 25 explode (can you say red mist?) on impact but have relatively low BC's. The heavier bullets will definitely have a higher BC but won't give you the "blow up" effect. The lighter bullets shoot flatter but I would rather have a heavier projectile that is affected by wind drift to a much lesser extent. We can't predict wind, but I can correct for elevation all day (gravity is constant). Overall I think With all things considered I think I'll go go for the 115 NBT--I won't have to work up another laod if ever want to use it for deer. Here are some drop figures for you to get an idea of what the BC difference will do to traj. Balistic tip 115gr = BC .453 Berger VLD 115gr = BC .522 115 NBT at 3000 FPS with 100 yard zero std.cond. drop in inches 400-25.4 500-46.7 600-76.4 115 berger 400-24.3 500-(my pocket PC just crashed but you get the idea) 600-72.0 Not too much of a difference. I will go with the NBT--$10 per 50. What kind of velocitites are you getting? Does anyone have good 115 grain load data? [/QUOTE]
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