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Best bullet weight for 300rum

 
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  #8  
Old 01-18-2009, 08:22 PM
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Re: Best bullet weight for 300rum

Quote:
have had a little experience with formulas for vehicle accidents and skid distances calculating speed. The formulas used for this don't consider the weight of the vehicle but the friction increases in line with weight due to gravity but this obviously isn't a consideration in bullet penitration.

A collision between two vehicles and a bullet and a deer are the same. One calculates the momentum of each body before impact and then calculates the energy loses from object deformation during impact and then recalculates the momentum after impact.
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  #9  
Old 01-20-2009, 01:36 AM
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Re: Best bullet weight for 300rum

So wind aside, the 150 grain bullet should have the best knock down ability since it has the most energy at the 1000m mark.
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  #10  
Old 01-20-2009, 05:06 PM
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Re: Best bullet weight for 300rum

joel,

Go back to the JBM Calculations and try it again. Use muzzle velocities out of a loading manual for bullet weights. Use the bullet selections that are programed into the calculator and check it again. The heavier the bullets get the harder they hit at 1000yrds out of the 300 rum. I'll go try it again myself, and if I come up w/ something different I'll re-post.

Steve
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  #11  
Old 01-21-2009, 05:23 AM
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Re: Best bullet weight for 300rum

I did use a reloading manual ADI's Smokeless Powders Handloaders Guide and bullet pre programed

I'm guessing you have a long barrel Steve. The fastest I can find a 180 grainer in ADI, Nosler or Barnes reloading is 3300 not 3400 that you quote.

Last edited by joel0407; 01-21-2009 at 06:21 AM.
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  #12  
Old 01-21-2009, 06:14 AM
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Re: Best bullet weight for 300rum

Dam I just typed this huge post with all my results from different bullets, weights and speeds.....then I hit the back button by accident.

Any way I found b.c has a lot to do with the end figure at 1000 yard. Nothing comes close to the Nosler AccuBond 180 Grainer at 3300 ft/s.

I could'nt find any 200 grainer that would come close.

I got better results when I entered the b.c manually than using the preprogram, stuff
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Old 01-21-2009, 10:45 PM
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Re: Best bullet weight for 300rum

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Originally Posted by joel0407 View Post
I could'nt find any 200 grainer that would come close.

Hugh????????????????????????


Try the 200 AB at 3200 (.588 BC) Also try the 208 AMAX at 3100-3150 (.649 BC)
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  #14  
Old 01-22-2009, 04:40 AM
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Re: Best bullet weight for 300rum

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Originally Posted by meichele View Post
Hugh????????????????????????


Try the 200 AB at 3200 (.588 BC) Also try the 208 AMAX at 3100-3150 (.649 BC)

Yeh right, I'm finding it's all down to b.c.
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