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243 WSSM VS. 25 WSSM

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Unread 04-17-2007, 09:42 AM
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Join Date: Sep 2004
Location: on the rifle range in Utah
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Re: 243 WSSM VS. 25 WSSM

Mikecr is right. They should have started with the 25 and gone UP from there. I love the idea of a 26 wssm. A friend of mine improved it and gets 6.5x55 swede ballistics with less powder and it shoots scary, little groups.

I have worked on one 25 wssm thus far and found that while it would get into the mid range 25-06 speeds, it shot much better about 100 fps slower. Deviations were normally pretty good and accuracy from the little Browning pencil barrel was surprisingly good once I let it cool. Once the proper load was found, I could hold 4 inch groups at 650 yards with the Nosler 115 BT. Energy was still enough to kill any deer living.

The 243 wssm has nearly identical case capacity to a regular 243 win except it usually will go slightly faster, have better standard deviations, and wider charge nodes according to the fellows that have them. But I would still rather have a 6br. [img]/ubbthreads/images/graemlins/wink.gif[/img]

The 223 wssm is a complete waste of time in anything other than an 8" twist and even then it is VERY hard on barrels.
Find it
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If it's not far, it's boring.
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Unread 04-17-2007, 08:34 PM
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Join Date: Sep 2003
Posts: 347
Re: 243 WSSM VS. 25 WSSM

They will both work very well. With turned brass in the 243 wssm its just like a 6 br on steriods. It will work and there is a place for the wssm on proberly set up rifles. If the brass wasn't any good , the 1000 yard shooters wouldn't be shooting small groups with them. [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Unread 04-17-2007, 09:06 PM
Join Date: Aug 2006
Location: Wyoming
Posts: 1,098
Re: 243 WSSM VS. 25 WSSM

has any body toyed with a 300wsm necked down to 6mm? i think it would be good for bullets above 107grs in a 8 twist.
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Unread 04-18-2007, 12:09 PM
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Join Date: Nov 2005
Location: Texas
Posts: 226
Re: 243 WSSM VS. 25 WSSM

Alot of comments have been made so far. I have worked with both these caliber from a loading stand point because some friends have purchased them. The 243 and the 25 wssm brass is horrable to work with there are 2 ways to get around this 1.) anneal the necks to begin with. 2.) Like someone has already said turn some of the thickness off but unless you have a tight chamber this may accelerate brass life. I've took a good look at alot of things with these cartridges but I feel (like a few others do) that we already have comperable rounds availiable. the 6mm rem is a great round and gets real good if you ackley improve it. for the 25 selection the water volume is almost the same as the 257 roberts AI
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Unread 04-19-2007, 09:48 PM
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Join Date: Jun 2007
Location: Buenos Aires, ARGENTINA
Posts: 131
Re: 243 WSSM VS. 25 WSSM

Really, do we need them??? [img]/ubbthreads/images/graemlins/wink.gif[/img]
regards, Gus

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