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I never did get my answer.
I am inquiring if an Improved version of the 25-06 will equate to a 257 Roy?
I think the Ackleys are kinda sexy, and the brass would be easier to obtain. Thinking this way I would be certain to get the 3300 fps the standard version is supposed to get.
Think I pist JB off, so can anyone explain his theory of "4" in terms of fps increase vs case capacity?
Last edited by Jesse Jaymes; 10/23/08.
Please God, give me some good tags this year....
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Campfire Ranger
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Campfire Ranger
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Jesse Jaymes,
One of my friends hunts with a guy who has a .25-06 AI. He shoots 100 grain Barnes at 3,600 feet per second. This has infuenced me to abandon my quest for a .257 Roy. If I can't find a used Mark V Ultralight by February, I am going to order a new one. It will then get the .25-06 AI.
"Only Christ is the fullness of God's revelation."
Everyday Hunter
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Campfire Tracker
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Think I pist JB off, so can anyone explain his theory of "4" in terms of fps increase vs case capacity? I think what you are asking is the rule of 1/4, meaning that for every percentage gain in case capacity, you get 1/4 of the gain in velocity. ie. 8% more powder, 2% more speed. I think. But I could be wrong.
This is a shooting forum, there is no place here for logic.
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Campfire Tracker
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Im running 3500 with a 100gr TSX out of mine. That was with WW brass and 60g of RL22. I dont think you can match the 257roy but you can be right on the heels. With Nosler brass im running 3400fps and 57grs and the 100 b-tip. Keep in mind thats 8 grs less of powder then the roy for the same speed. When I went to build this gun I looked real hard at the bee but its a lot cheaper to shoot the poor mans version 
"It's my main love for all things Ackley. Plus the dude was cool before cool was cool."
SH08
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Campfire Ranger
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I asked myself the same question (not whether it would equal, but would it get close). Obviously capacity is not there to equal.
I got some good input here about the 6.5/06 AI; according to the fellas here who have done it, it gets scaryclose with less powder than the 257 BEE.
Look in the latest reloading manuals and you will see the std. 6.5/06 not far off, nor the 6.5-284 Norma.
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Campfire Tracker
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My 25-06 AI runs 3568 fps with 60 grains of RL-22, 100 tsx bullet. But figure that's hot, and perhaps grey. You can get within 100-150fps of a Roy, but the Roy always wins.............even a Vanguard version with a 24 inch barrel.
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Campfire Tracker
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I guess I should have said mine runs a 24inch barrel.
"It's my main love for all things Ackley. Plus the dude was cool before cool was cool."
SH08
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Campfire Outfitter
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Campfire Outfitter
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The standard .25-06 WILL get 3300fps with a 100gr bullet. My 22.5" barreled Tikka averages 3307fps with the 100gr TSX and 2995fps with the Sierra BTSP. 53gr of IMR4350 gets me there...
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Campfire Ranger
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Campfire Ranger
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25-284 will put you at 3400ish with 100gr TSX, in a short action. It's really hard not to like.
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Campfire Kahuna Emeritus & Campfire Outfitter
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Campfire Kahuna Emeritus & Campfire Outfitter
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Capacity equals velocity. The .257 Weatherby wins.
Steve
"God Loves Each Of Us As If There Were Only One Of Us"
Saint Augustine of Hippo - AD 397
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Campfire Tracker
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Yup, We can chase all we want be we are never going to beat it 
"It's my main love for all things Ackley. Plus the dude was cool before cool was cool."
SH08
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Campfire Kahuna
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Campfire Kahuna
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I am inquiring if an Improved version of the 25-06 will equate to a 257 Roy?
Not quite, but it gets you closer.
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Campfire 'Bwana
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Campfire 'Bwana
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Capacity equals velocity. The .257 Weatherby wins.
Steve We have a winner!!That's the end of this thread 
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Campfire Ranger
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IIRC, there is no replacement for displacement, correct?
Selmer "Daddy, can you sometime maybe please go shoot a water buffalo so we can have that for supper? Please? And can I come along? Does it taste like deer?" - my 3-year old daughter
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Campfire Ranger
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25/378..... Dober
"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy
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Campfire Ranger
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Campfire Ranger
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Only you Mark, only you....going to run 75's, 85's or 87's (grins)?
Well, Steve Timm has been known to eat barrels too......
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Campfire Ranger
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Campfire Ranger
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;)Me thinks I'd use the new 70 TTSX for about 5K, and yeah DZ and JB and I all went to the same school of light em up...grin
Dober
"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy
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Rob
// Light travels faster than sound. This is why some people appear bright until you hear them speak.//
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Campfire Kahuna Emeritus & Campfire Outfitter
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Campfire Kahuna Emeritus & Campfire Outfitter
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Remington's missed opportunity. Steve
"God Loves Each Of Us As If There Were Only One Of Us"
Saint Augustine of Hippo - AD 397
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