1 in 7.5 Twist 257 Weatherby
- Thread starter Totch94
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A 1:7.5 twist would be my choice for a 257 Weatherby and stay with heavies. I shoot the 131 Blackjacks in both a 25 CM and 25 PRC using RL26 from 1:7 twist barrels. The two (hunting and competition) CMs run about 3000 fps while the PRC is running 3260. Never had a blackjack fail but I have been told that 3300 is about the limit for the 131 in a 7 twist barrel. We use the 131 for hunting and competition and it has been flawless for both. Took two shots at our 2000 yard target a few days ago just wondering if my BC would hold when really stretched out. Saw no dust so wasn't sure it was even close. Drove down to take a look later that afternoon and both shots hit within 6 inches of each other on a 18" plate. I am ready to sink my 25 CM reamer another .100" and fire form some 260 brass for my hunting CM to see if I can push it a little more. I have no stock in blackjack but it has been a great performer and I order a box of 500 regularly. Would be nice to have 130-140gr Berger EOL, ELD-X, ABLR hunting options. I have some heavy Hammers on my shelf but haven't had time to work up a load. Since I tested the 131 Blackjack I have been all-in on the 1/4 bore.
I have been wondering that, but in the website it says 1:8 should work for the mags like 257 weatherby. If I can't get find a good load I will probably drop down to the 121gr Hammers or wait to see where Berger's heavy 25 cal falls once it is released.
The 121s shoot 0.5 in my 25-284 @3200+, 7:5 twist. I just don't have access to range beyond 400 to test
You make a strong point there.
Anyone else test the heavier 128 grain or higher weight bullets out of a 257 Weatherby Mag. I am still waiting on my custom build also with a 1-7.25 twist. Got both 128 grain hammers and 133 grain Berger Elite hunters. Just hard to find any hard info on 257 Weatherby Mag loads. I got a couple loads from Berger but that's about it.
Would you please advise where you acquired the Berger 133s?
Precision Reloading had both the 133 and 135s in stock last month. I got a couple hundred.
Copy, thanks!
The current status is out of stock. I have had a few items in their notification list for a while now.
Ed
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^^^This!^^^ I went with 1:7" on my . 257 WBTY and hopeful more heavies will follow.
Yeah just checked myself. Glad I jumped on them when I did. One thing I have found when it comes to notifications, if you do not go back and update monthly it will not keep you notified. So I revisit all these sights monthly and update notifications. In doing so at times I have found projectiles I have been waiting on in stock with out being notified.
Yeah, it's hard to keep up with all the notifications from various online stores; if I snooze, I lose.
Warbird2006
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Mile high shooting supply had some, sending me 300 by Tuesday!
