.25 cal question

[Mustang72]

I m not putting a 243 down, it's just not for me. Part of the problems I had was bullet choice. Figured if I stepped up from a 223 to a 243 I could take body shots,but every one that had any size ran off if I took a body shot.Went back to head shots with a 223. I 've also shot some 243s that kicked just as much as some 25/06s. But to each their own. I still think it's a good little round and have considered getting another since I have dies,lots of brass and bullets.

 

[257 Blackjack]

I do not see this happenning. They would have to introduce new 257 cal cartridge for using heavier bullets, 120-130s with bc over 600, but you would need a large twist.

They exist.

0.345 G7 / 0.674 G1 = 131 ACE. They scoot and they hit hard. : )

 

[MudRunner2005]

I do not see this happenning. They would have to introduce new 257 cal cartridge for using heavier bullets, 120-130s with bc over 600, but you would need a large twist.

The .25-06 AI 40º will probably be pushing the 131's in the 3200 FPS range... You can buy dies and reamers for it right now.

 

[Nimrodmar10]

Love mine. Extremely fun to shoot.

It's been done by Jim Carmichael and another Gentleman. It's call a 25 Cheetah. They did a whole set of Cheetahs made from Remington BR Brass, which had a small primer.
I had a 22 Cheetah that was awesome. 4150 fps with a 55 gr. Bullet.

 

[Warbird2006]

They exist.

0.345 G7 / 0.674 G1 = 131 ACE. They scoot and they hit hard. : )

Thank you. Thouble is the rifles have not enough twist. The Weatherby have 1 : 12 twist, which mey not be enough to stabilize your bullets.

 

[257 Blackjack]

Thank you. Thouble is the rifles have not enough twist. The Weatherby have 1 : 12 twist, which mey not be enough to stabilize your bullets.

Definitely not going to work in 1:12". Just physics. High performance 25 Cal takes equipment adjustments but in the next year or so 1:7 and 1:8 are not going to be "new" anymore.

 

[Brian Wheeler]

Now 1 in 10 twist.

"And besides, I learned that early .257 Weatherby rifles often had a 1:12 twist rate as opposed to today's more common 1:10 twist, and the 117-grain loading is more appropriate for guns with that older twist rate. If you happen to have a .257 Weatherby rifle built before 1964, you probably have the older, slower twist."


http://www.shootingtimes.com/editorial/weatherby-vanguard-series-2-synthetic-review/99096#