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300 win mag brass

 
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  #8  
Old 12-08-2012, 04:10 PM
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Re: 300 win mag brass

OK thanks for explaining that to me.
Jon
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  #9  
Old 12-09-2012, 02:42 AM
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Re: 300 win mag brass

Quote:
Originally Posted by phorwath View Post
The larger the case capacity, the greater the MV, given equal pressures.

If you load a smaller capacity case to a higher pressure than a larger capacity case, of course the smaller capacity case could launch the bullet faster. But if both cases are loaded to equal pressures, the larger capacity case has a greater volume of gas to expel the bullet out the muzzle at a higher velocity.
I see I had an error in my original Post. It's been corrected above, with the bolded word larger replacing the word 'smaller' in my originally posted answer. Sorry for the confusion.
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  #10  
Old 12-16-2012, 04:52 PM
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Re: 300 win mag brass

My hunting loads were developed using Rem brass, target with Winchester. No real difference between the two that I've noticed, just what I had on hand, so it got used.
I'm sure there's better quality available, but I'm getting 1/2" groups with the Rem brass and 165 Accubonds, so see no reason to change anything.
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  #11  
Old 12-16-2012, 08:39 PM
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Re: 300 win mag brass

Quote:
Originally Posted by jskmtd View Post
This maybe a dumb question but, how does the less case capacity of the RWS brass effect muzzle velocity (ie: more or less velocity)?
Thanks, Jon
Not a dumb question at all...

If you already have a favorite load, then you put the same amount of powder into a case with smaller capacity, the pressure can be higher due to the smaller case capacity. That increase could be too much pressure and blow the rifle.

Kinda like stuffing the same amount of compressed air and fuel from a Harley's cylinder into a briggs and stratton and then light the plug. BOOM!!

The general rule of thumb is to back off the load anytime a component changes, then work back up to make sure that change doesn't causes extreme pressures. If you don't have a load yet, start at the "start" load and work up, looking for pressure signs on every round fired.

Chris
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  #12  
Old 12-16-2012, 11:07 PM
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Re: 300 win mag brass

Thanks for all the info guys. I ordered 10013 pieces of RWS brass, so I will start low and work up.
Jon
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  #13  
Old 12-17-2012, 12:23 AM
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Re: 300 win mag brass

Quote:
Originally Posted by jskmtd View Post
I ordered 10013 pieces of RWS brass, so I will start low and work up.
Jon
Now that's a lot of 300 win mag brass! You must be independently wealthy...
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  #14  
Old 12-17-2012, 08:05 AM
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Re: 300 win mag brass

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Originally Posted by phorwath View Post
Now that's a lot of 300 win mag brass! You must be independently wealthy...
He needs the 13 for load development; the 10,000 will be loaded with the best load after development.
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