I am thiking of buying 25-06, If i get it Akley improved how much velocity should i expect to gain? Oh ya 26 inch barrel, rem 700.

Based on a little practical experience with the 375 AI cartridge and what I have read on this board, I would say 50-100 fps. IMO, it's not worth the hassle. If I need anymore from a 25, I would go to a 257 WBY. Lou

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I would say 50-100 fps. IMO

From experience at equal pressure I would call it 35-50. Some will get larger gains but I feel those have a fast barrel and a chamber that will allow them to really push pressures. For a couple $$ more than doing an AI correctly you can go 257Wby or if you want to push the limit go 257STW.

if it is a factory rifle and you are re-chambering, youll end up with a better chamber cut to closer SAMMI tolerants, you could also get a tight-necked chamber if you so desired. hopefully doing that you could get a little more accuracy from the rifle, and i think youll gain around 50FPS. on the other hand dies are more expensive and youll have to fireform. If you want a 25-06 ackley go for it

Might want to look at this site
http://www.reloadersnest.com/frontpage.asp?CaliberID=293

I owned and used a 25-06 IMP on mule deer for many years. Any animal I ever shot with it could have been harvested with a .257 roberts just as well. A plain Jane 25-06 should be more than adequate.JMHO roger

In my work with the .25-06 I've found that its case capacity to bore ratio already requires the slowest powders for optimum velocities. This suggests that increasing the case capacity would provide very little benefit in terms of velocity.

If you are building a custom rifle and, like me, have no use for factory loads anyway, then having it chambered for the improved version might provide you with a little more accuracy potential and possibly less case stretching, but you'll use a little more powder to achieve a VERY little more velocity. On the other hand, you can achieve the same velocities with a little less pressure. Bottom line is, if you are purchasing a factory rifle, then it offers insufficient potential benefits to bother to have it rechambered.

I have a 25-06AI and a plain old 25-06. Haven't had the chance to shoot the AI over a chrony yet, so can't give you hard performance numbers.

I like the AI version and don't mind the 'messing around' that the Ackleys take. Part of my gunnuttery, I guess. I do know one thing- the Ackley version has WAY less case stretch.

If you want an AI go for it.

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Originally posted by Paul from nz:
if it is a factory rifle and you are re-chambering, youll end up with a better chamber cut to closer SAMMI tolerants, you could also get a tight-necked chamber if you so desired. hopefully doing that you could get a little more accuracy from the rifle, and i think youll gain around 50FPS. on the other hand dies are more expensive and youll have to fireform. If you want a 25-06 ackley go for it

My thoughts exactly. I had an old Rem 700 30-06 that was always a dog in the accuracy dept. I figured that a cheap accuracy fix might be to covert this old dog to an AI. Well, it worked. I am very pleased with the improved accuracy.
As for the extra expense for the AI dies, I duno. My Redding AI dies were less than $60 whereas my standard Redding 30-06 dies were around $35. The fact that my AI brass will last much longer will certainly outweigh the measly $30 extra cost for a set of dies.

Either one would suit me... brass would last longer with a AI version, but the trouble isn't worth it to me unless I just found a good deal on an AI gun..

Well, let's see, my 25-06 AI loaded with 100 gr TSX's run's at 3600 fps, all over, or near a 257 wby mag. Rem 700 CDL with a 24 inch barrel.