250 Ackley
- Thread starter Pinoniper
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kiwikid
Well-Known Member
If you are referring to the 250 Savage AI then you are right to be intrigued!
Due to some fortunate circumstances I bought my wife a Copper Model 54 Custom Classic 250 Sav AI and it has exceeded my expectations in every way. With 40 grains of Rel 15, Fed 210 M primers in Winchester fire formed cases this cartridge drives a 100 grain Sierra GK projectile at 3088 fps with no pressure signs from a 22" barrel. The max load listed by Sierra is 41 grains of Rel 15.
The 250 Sav AI is a very efficient cartridge, my Cooper Model 52 in 25-06 with a 26" barrel drives the same 100 grain projectile at 3300 fps but uses 56 grains of Rel 22 to achieve that velocity. So 16 grains more powder to gain 212 fps.
Sierra Bullets use the 250 Sav AI for their daily accuracy testing of their 25 cal bullets and with the accuracy I have seen I can understand why.
Due to some fortunate circumstances I bought my wife a Copper Model 54 Custom Classic 250 Sav AI and it has exceeded my expectations in every way. With 40 grains of Rel 15, Fed 210 M primers in Winchester fire formed cases this cartridge drives a 100 grain Sierra GK projectile at 3088 fps with no pressure signs from a 22" barrel. The max load listed by Sierra is 41 grains of Rel 15.
The 250 Sav AI is a very efficient cartridge, my Cooper Model 52 in 25-06 with a 26" barrel drives the same 100 grain projectile at 3300 fps but uses 56 grains of Rel 22 to achieve that velocity. So 16 grains more powder to gain 212 fps.
Sierra Bullets use the 250 Sav AI for their daily accuracy testing of their 25 cal bullets and with the accuracy I have seen I can understand why.
lancetkenyon
Well-Known Member
Kiwikid nailed it.
I had one for years. It is an amazing little round. Light recoiling, small.powder consumption, efficient, accurate.
Building one now, if you go with a faster twist than the old 1:10" max, the possibilities soar.
In my 24" 1:10" barrel,using H414, I ran a 100 SMK @ 3190, or a 115 HVLD @ 3080 with ease.
I had one for years. It is an amazing little round. Light recoiling, small.powder consumption, efficient, accurate.
Building one now, if you go with a faster twist than the old 1:10" max, the possibilities soar.
In my 24" 1:10" barrel,using H414, I ran a 100 SMK @ 3190, or a 115 HVLD @ 3080 with ease.
One sweet round for sure. Easy to fire form and extremely accurate with the medium burning powders I tried. I am loading 43.5 grains of IMR 4350 behind a 100 grain ballistic tip to 2850 fps out of a 15" tc encore pistol.
Eagel Builder
Well-Known Member
Have Rem 700 classic in 250 sav, now in 250 AI. Very accurate rifle sub moa at 200 yards. Sierra 90 grain hollow point and Barnes bullets.
gemihur
Well-Known Member
nobody gets it.
A common misnomer of nomenclature was that the .25 Ackley or .250 Ackley was derived from the use of a belted magnum case (300 magnum) and NOT utilizing the parent of the 22-250, or the 250 Savage.
Obviously, the latter, the 250 Savage Improved, was received with much more acceptance and sice the passage of time and popularity have all but obscured the big, quarterbore's references
A common misnomer of nomenclature was that the .25 Ackley or .250 Ackley was derived from the use of a belted magnum case (300 magnum) and NOT utilizing the parent of the 22-250, or the 250 Savage.
Obviously, the latter, the 250 Savage Improved, was received with much more acceptance and sice the passage of time and popularity have all but obscured the big, quarterbore's references
gemihur
Well-Known Member
I actually bought a FL die stamped 250 Ackley MG manufactured by RCBS on the remote possibility that I could use it on a 250 Savage should I rechamber. Imagine my surprise when it's base opened to over 1/2"!
std7mag
Well-Known Member
I'm hoping Pinoniper has figured it out in the almost 4 years since the thread was posted. 
Me too, but he was last seen on Sep 15, 2022, and no update.I'm hoping Pinoniper has figured it out in the almost 4 years since the thread was posted.
WV Hitman
Well-Known Member
I've had a .250AI for 35+ years, but not in a rifle. Mine's a XP-100 handgun made by SSK Industries. It's extremely accurate with WW760 powder. Shoots almost all 85-110 gr. bullets to the same POA. Killed groundhogs out to 503 yards & deer out to 450 yds. Very shooter friendly with minimal recoil.
