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Fastest, most accurate .257, .284, .308 ??????

 
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  #1  
Old 03-02-2004, 08:33 PM
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Fastest, most accurate .257, .284, .308 ??????

Hi all!

Just getting into LRH -

I just want to confirm what the latest fastest and most accurate long range cartridges are for the following bullet diameters (given 26-28" barrel length...)- please let me know!! From several books and internet sources, I have come up with a short list below. The cartridges can be wildcats, factory or proprietary as long as they have achieved a high degree of respect and credibility against their peer cartridges for velocity and accuracy.

1. .257 - is it the .257 Scramjet or the .257 STW (hot tomale)?
2. .284 - is it the 7mm RUM or 7.21 Firebird, other?
3. .308 - is it the 300 RUM, 300 Pegassus, 30-378WM, 30-338 Lapua mag (wolf), 7.82 Warbird, other?

This should be fun [img]images/icons/grin.gif[/img] Thanks.
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Old 03-02-2004, 09:10 PM
MAX MAX is offline
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Re: Fastest, most accurate .257, .284, .308 ??????

Insufficient data to compute. This question cannot be assimilated.

Oh, I'm sorry [img]images/icons/wink.gif[/img] I was having a Borg flashback. Perhaps if you provide bullet weights some of the folks here 'bouts could give you some help.

Welcome aboard BTW.

The question strikes me oddly. Are you considering a purchase or building one? Most here are more concerned with high BC rather than velocity, though they get some of that too. Retaining velocity is more important than what you start with. Accuracy is up to you and the quality of your rifle/loads, not so much the cartridge. The .257 caliber, though one of my favorites, does not really qualify for LRH on big game, at least not in the same sense as the .30's and .338's and larger. Not bad for pottin' varmints out there a ways though.

Anyway, if you have the time, hang out awhile. You're sure to pick up some VERY GOOD advice now and then. The archives are interesting if you're looking for particular info. Most of it's been addressed along the way.

Well, I'm off to the unknown boundries of ballistic possibilities and the far side of THE curve. Catch you later... [img]images/icons/smile.gif[/img]
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Old 03-02-2004, 10:22 PM
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Re: Fastest, most accurate .257, .284, .308 ??????

Bullet weights?? ahhhh... [img]images/icons/smile.gif[/img]I will choose bullets with the highest BC given the bullet weight I want to use.

I am interested in these calibers for eventual use in a new custom rifle or 3- I can dream cant I?! [img]images/icons/grin.gif[/img]. Bullets weights for the .257 will be between 100-120 gr; .284- 140 to 168 gr; and .308 - 168gr to 190gr.

Hope that helps out. I now do my own reloading too.

Also, can any of these cartridges be AI'd ackley improved to 40 degrees for even more efficiency and velocity?

thanks

[ 03-02-2004: Message edited by: CanadianLefty ]
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Old 03-03-2004, 08:16 PM
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Re: Fastest, most accurate .257, .284, .308 ??????

Would anyone comment, I'd like some perspectives from the regulars at this forum.

Thanks!
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Old 03-03-2004, 10:10 PM
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Re: Fastest, most accurate .257, .284, .308 ??????

All 3 cartridges seem to be entirely too hot for accuracy work. In My Opinion.

That in itself will draw many answers to your post.

There is very seldom a cartridge which is both most accurate and fastest.

IN MY OPINION Your bullet selection is at least at the lower end of the weights that will yield the best result for your purpose. I will assume that because you are asking here, that you have not done a lot of shooting at long range and that you think that fast bullets are the answer. They can be in rare circumstances, but, being realistic, you would be better served by building a simple cartridge and going from there. You will find it a pile cheaper and far more rewarding. You can kill something with a lot less gun than what you describe above, at most any realistic "first year of LR hunting" range.

I have to add that opinion disclaimer to all my posts now because of the infinite wisdom of others who disagree and call me out on everything I say. Sorry.

Try a 7mm WSM or 30WSM. They're cheap, efficient, and there is no way to get caught in the speed trap that lures shooters to just keep adding powder like the RUM's. You also get a lot more speed per grain from a WSM over a RUM (like 30% or more)

Again, "In My Opinion"

[ 03-03-2004: Message edited by: 4mesh063 ]
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Old 03-04-2004, 10:55 AM
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Re: Fastest, most accurate .257, .284, .308 ??????

Thanks- I actually have a .300WSM, 24" barreled Savage Weather Warrior-Model 16--I have been very successful with it up to 400 yards on game. I need to practice more with it as I want to consistently hit 10" paper pie plates out to 800 yards (max. distance at shooting range available to me). My rifle system currently shoots .75-1MOA out to 400 yards.

The reason why I ask about these cartridges? I am planning ahead for when I want to ge another rifle [img]images/icons/smile.gif[/img]I may want to experiment with something more powerful later on...

To answer your question on the lower end bullet weights- I plan on using any one of these cartridges at a MAX. of 800 yards- that to me is considered extreme range [img]images/icons/smile.gif[/img](at least until I practice more and hang out at this forum [img]images/icons/wink.gif[/img] )--as a result, I do not feel a need to go for any heavier weights (please corect me if I am wrong).

A semi or full custom rifle will take another year to build and I do not plan on ordering one for at least 6 months. Thus, I have another 2 seasons of lead time to improve my skills.

Thanks for helping me out!
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  #7  
Old 03-04-2004, 11:33 AM
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Re: Fastest, most accurate .257, .284, .308 ??????

The WSM is an easy 800 yard deer rifle. A 300RUM would give you a little less drop and more retained energy. 300RUM is the top end for 800yds.

The 7STW or WSM might be your best bet if you are looking for flat shooters.

JB
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