.257 STW

Yep. Throat erosion from overbore cartridges. Unburned powder still in the barrel.........Course, did I mention I have a 6-06......grin. Still, I'd think a 257STW would be much worse..........
 
Its only bad if you dont have the barrel length to use to its full potential...

If you only have a 24" tube, then yah its probly going to be a worthless POS.

If you stick a 26", better yet a 28", stick a 8 or 9" twist and shoot some heavy for caliber .257" bullets, your going to get some smoking velocities, performance in a .257" like you've never seen before, and you wont have "unburnt" powder promlems..

Personally, I think the 25-300 Win Mag is the better route to go. You have the option of using Lapua brass. There isn't chit for quality brass for the STW...Thats its only limiting factor..

Barrel life probly aint gonna be much more then 1000 rounds with the hotrods, but if you break the barrel in, and work up a good load, that takes what 75 rounds, practice a litle bit every year, say 100 rounds a year, that rifle will still last almost 10 years.

Still, 6.5" is better route to take. Ballistically they spank anything the .257" has to offer, afterall, since I like to shoot long range, thats what I"m looking for...As much as I love .257"'s, when my 25-06 barrel is toast, its getting rebarreled to a 6.5-06 AI w/26" tube, set up to shoot 140g AMAX or VLD"s...
 
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Now that you have al this information to deal with consider this.
The 257 STW is no more expensive to build than the standard 25-06. The dies cost more as does any wildcat, brass is about the same or so close pennies don't seem to count. It will stomp an 25-06 AI into the ground as well as the 257 WBY. Loading data is available for all weights of 25 caliber bullets. There are more of these rifles around than one might think, I've built at least 20 of them and own one myself. If you want a super fast 25 the 257 STW will fit the bill.
I have shot some 3 shot groups that were at and under 3/8" using Sierra 100 grain match kings with RL 22 powder.
With the right bullet it will kill any animal in the lower 48 other than the big bears, that you can't hunt anyway.
9 years ago, I killed a 6X6 bull elk at 513 yards with mine, he went to the ground in seconds and never tried to get up.



Exactly what I thought it would do and the reason why I want one. What would be the ball park here sir for building one? Considering a basic setup and nothing super fancy. It might be 6 months to a couple of years before I get one but it seems like this would be the perfect mainstay caliber for muley's and antelope up to elk. Could you give me an idea of what the gun might cost(not exact or binding of course), and maybe down the road I can scrounge up enough cash to have you make me one.
 


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