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LR varmint .257 bullet options

 
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  #1  
Old 02-06-2004, 07:41 PM
MOA MOA is offline
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LR varmint .257 bullet options

I have been working with loads for a 25-06 sendero and am trying to decide on projectiles. It likes the 75 grain VMAX and 85 NBT. These are the only true "varmint" (read: advertised as=explosive) bullets that I would consider. The sendero also happens to like the 100 grain SMK but I am geting pass-thru's with critters getting back down their holes (will be hunting from squirrel to coyote). I am considering the 100 or 115 NBT but am worried that they won't be explosive enough since they are really meant to be for deer. Can those with experience please comment on what has worked in the past. BTW "LR"=~500-600 yds.
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Old 02-06-2004, 08:15 PM
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Re: LR varmint .257 bullet options

I shot Nosler 140gr B-Tip's (deer bullet) from my 7mm-08 while groundhog hunting. The body of a groundhog is enough to initiate expansion of this non-varmint ballistic tip.
Give the heavier BT's a try. They may work better than you expect.

VH
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  #3  
Old 02-06-2004, 09:52 PM
 
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Re: LR varmint .257 bullet options

You may want to try some other match style bullets that use the J4 jackets as theyr are pretty light and tend to expand pretty well. I've had good luck with the Bergers and Nosler J4s on coyotes , they have all opened up real fast and that is out of a 308 win which is a step down the velocity ladder.
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Old 02-06-2004, 10:09 PM
MOA MOA is offline
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Re: LR varmint .257 bullet options

Thanks guys--I think I'll try the NBT's first. Here's what I found
115 NBT .453
100 NBT .393
85 NBT .329
Lost River 90 grain J36 .479 and .529 for the 100 grain.

The lost river would be awfully flat and exceeds even the 115's BC-- the problem with these are the price--almost $2 per bullet. I'd like some more feedback on these. Not only would these make a good varmint bullet but would also make a good LR deer bullet for the small blacktail we have around here. I could do it all with one load.
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  #5  
Old 02-06-2004, 10:23 PM
 
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Re: LR varmint .257 bullet options

MOA the Berger VLD has a BC of .522 at 115grs ,I'm trying to decied now wiat the differance is going to be in the drop of the Balistic tip opposed to the Berger.

Balistic tip 115gr = BC .453
Berger VLD 115gr = BC .522

MOA what kind of velocities are you getting and what powders are you using ??
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  #6  
Old 02-06-2004, 11:32 PM
dwm dwm is offline
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Re: LR varmint .257 bullet options

FYI, I shoot the 115 Nosler BT/Partitions and am getting right around 3160 fps with 61 grains of Retumbo in a REM700 Sendero SF.

It's a little hot but not bad, don't start there.

They shoot consistently at .3 to .5 MOA, I am probably the llimiting factor ...

My 25-06 loves all the Nosler BTs, 85, 100, and 115 and the 115 Partitions shoot surprisingly well also. I shoot the 85s and 100s with H4831SC. Seat them all to the same length.
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  #7  
Old 02-06-2004, 11:35 PM
MOA MOA is offline
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Re: LR varmint .257 bullet options

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?
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