Bullwhacker
Well-Known Member
25 PRC with 133 Berger's, 24" Bartlein 1:7 at 3315 with RL26.
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Heavy bullets in .257 Weatherby ?
- Thread starter milestown
- Start date
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I specifically asked Berger if the 115gr would be ok in my 1:7 twist barrel and they said yes. Now if you start shooting light constructed bullets super fast I bet you have problems.
That is awesome. 257 Roy performance with less powder.
Currently I shoot 100 gr Barnes at 3550 fps with 7.5 twist but i would definitely be didn't some leg work before ordering a barrel. Just on a long list of things to do.
I got the same response from them.
Barnes and other Monos would be ok I think in fast twist. The light varmint type bullets though would probably come apart.
MagnumManiac
Well-Known Member
I run 3 1/4 bore rifles, 257AI, 25-06 and 257Bee, all have 10" twists and I use 100-115g bullets in all.
In my Bee and 25-06 I run a lot of RL25 and H1000. Haven't tried anything else other than Retumbo. I love the performance of either 110g Accubonds or 115g Partitions, never had an animal get away from a hit with either, years ago I ran Speer Hot Cor 120g and found them a bit hard, so switched to Grand Slams…fantastic bullets.
Cheers.
In my Bee and 25-06 I run a lot of RL25 and H1000. Haven't tried anything else other than Retumbo. I love the performance of either 110g Accubonds or 115g Partitions, never had an animal get away from a hit with either, years ago I ran Speer Hot Cor 120g and found them a bit hard, so switched to Grand Slams…fantastic bullets.
Cheers.
Mike Matteson
Well-Known Member
Hoss 50: 2 things, do you still have that old barrel? If so I would be interested in purchasing it. I am setting up a dummy action to fire-form my cases. I am having a 257/280AI rifle being built. So I will have a reamer to rechamber that barrel, and a new Bartlein barrel order out in a 7-1 twist rate. The rechambering will be done a a gunsmith. That above my pay grade. When the Bartlein barrel get here is another story.
I don't. They had to relief cut the old barrel to get it off.
Will setting bullets out closer to the lands in Weatherby cartridges cause higher pressure/stiff bolt lift? Seems once rifle gets a little warm it gets tighter and bolt lift is stiff. 2 shots may be fine then the third is tight. Is a recent development. Half grain below max charge with 7828ssc and 115-120g bullets, 20-30 thousandths jump. Rifle is older vanguard stainless, 257 WBY.
Bghunter338
Well-Known Member
This is the heaviest one that I was able to find. For those of you who likes the heavies here you go 
