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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257 Wby --> .25-06 AI
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<blockquote data-quote="Trickymissfit" data-source="post: 460589" data-attributes="member: 25383"><p>personally I'd do a .257AI before I'd do the 25-06 or the Weatherby. Been around all three a good bit. The 25-06 is a little over max capacity for a 25 caliber bullet, and even Ackley says you won't see much of an improvment (if not worse), but will see better case life. Forget the loading manual crap about the .257 WBY.! This round can really be pushed at least another 150 to 200 fps faster than most manuals claim. 3350fps is easilly obtainable with it, and still be safe. The downside is that the cases are expensive, and often hard to come by. Before I'd build a .257 mag, I'd do a .270 mag (or better yet a 7mm WBY mag).</p><p> </p><p> You might want to give this some thought. All Ackley cases have the same taper per inch, and the 25-06 and a .257AI have the same case head diameter. So the shoulder diameter will be very close on both rounds (less than .0015"). Both have the 40 degree shoulder as well. So why not just take the 25-06 reamer and run it in a little short for a .257AI headspace, but with the long 25-06AI neck! This round would be fantastic at the minimum. Should push a 120 grain bullet to 3100 fps. Yet fit in your magazine well very well with very long bullets. For dies you simply take 25-06AI full length die and cut it off at the bottom. Take a .257 Roberts Forster seater and run the 25-06 reamer in the sleeve till it's at the right head space depth.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 460589, member: 25383"] personally I'd do a .257AI before I'd do the 25-06 or the Weatherby. Been around all three a good bit. The 25-06 is a little over max capacity for a 25 caliber bullet, and even Ackley says you won't see much of an improvment (if not worse), but will see better case life. Forget the loading manual crap about the .257 WBY.! This round can really be pushed at least another 150 to 200 fps faster than most manuals claim. 3350fps is easilly obtainable with it, and still be safe. The downside is that the cases are expensive, and often hard to come by. Before I'd build a .257 mag, I'd do a .270 mag (or better yet a 7mm WBY mag). You might want to give this some thought. All Ackley cases have the same taper per inch, and the 25-06 and a .257AI have the same case head diameter. So the shoulder diameter will be very close on both rounds (less than .0015"). Both have the 40 degree shoulder as well. So why not just take the 25-06 reamer and run it in a little short for a .257AI headspace, but with the long 25-06AI neck! This round would be fantastic at the minimum. Should push a 120 grain bullet to 3100 fps. Yet fit in your magazine well very well with very long bullets. For dies you simply take 25-06AI full length die and cut it off at the bottom. Take a .257 Roberts Forster seater and run the 25-06 reamer in the sleeve till it's at the right head space depth. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257 Wby --> .25-06 AI
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