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Bullet weight vs velocity

 
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  #1  
Old 10-29-2013, 10:38 AM
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Bullet weight vs velocity

We all know heavy and fast bullets resist outside forces the most but we can't have it all and we're shooting projectiles, not lasers.

So when does the time of flight become a hinderance to heavier projectiles? Of course this will vary gun to gun but surly we can get it down to a generalization of calibers.

Is it better to push a 210gr 2400fps or a 168gr at 2700fps? Where is optimum performance found?
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Old 10-29-2013, 07:50 PM
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Re: Bullet weight vs velocity

I would argue that it depends almost entirely on what you are asking the cartridge to do. For instance, if you are looking to hunt deer at ranges between 50 and 350 yards, speed and flat shooting might be your key criteria (little to no hold-over).

If you are setting up for elk at 1200 yards, you would want the most retained energy / highest bc/ most wind resistant bullet as possible.

Moose at 50-150 yds, you may look at heavy controlled expansion bullets with no consideration for bc.

I don't subscribe to the one-size fits all approach - there are enough options out there to let you pick what is best for your application.
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  #3  
Old 10-29-2013, 08:15 PM
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Re: Bullet weight vs velocity

Killing paper up to 1000yds maybe further. Out of a 280 and 308.
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Old 10-29-2013, 09:12 PM
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Re: Bullet weight vs velocity

Maybe some of the BR guys will chime in with more/better advice than I can give. My opinion would be to pick the highest BC bullet that is practical in the rifle/caliber, that shoots accurately, and that will remain supersonic past my longest expected range...
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  #5  
Old 10-30-2013, 10:18 AM
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Re: Bullet weight vs velocity

Quote:
Originally Posted by ohiohunter View Post
Killing paper up to 1000yds maybe further. Out of a 280 and 308.
Whatever bullet is most accurate in your rifle. Most will be using a heavier high BC VLD type bullet for this type of shooting. My process of elimination would be to run the the bullets BC's and velocities to see which is bucking wind best at that range, then develop loads for maybe 2 or 3 and pick the most accurate in my rifle.
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Last edited by MontanaRifleman; 10-30-2013 at 11:05 AM.
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  #6  
Old 10-30-2013, 11:26 AM
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Re: Bullet weight vs velocity

Since your hunting paper I would go for the heaviest high b.c. bullet I could get my rifle to shoot well.for me that would be something in the 200 grain range for the 308 and probably a 168 out of the 280. The difference in flight time between a 168 Berger at 2700fps and a 210 at 2400fps is only .02 seconds at 1000 yards because of the higher b.c. bullet being able to retain velocity better at long range.
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  #7  
Old 10-30-2013, 12:10 PM
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Re: Bullet weight vs velocity

I would also think that paper does not care about terminal ballistics so speed is not as important. For example berger says 1800 fps minimum for expansion so techinically that means when your bullet is under that speed at whatever distance that is, your done. Pick the distance you wish to shoot and find the chambering that gets you there. I think a 308 is a proven chamber for paper work out to 1000 but probably not something you would ever shoot an elk with.
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