Anybody have a 30-40 Ackley Improved? I read about it in the Ackley books and am intrigued by it. It looks like alot of velocity for not much gunpowder. Any info appreciated. Barlow
get an '06
So the .30-40 AI must be a hobby project huh?
No, I don't want to build one, I am curious about it and would like to know if it's as good as P.O. Ackley said it was. Barlow
I'm sorry Barlow, I just noticed this is the wildcat forum. I don't know enough about re-loading to carry on an intelligent conversation here.
When I read your thread, it came to mind that the .30-40 was the predocessor to the 06.
Forgive me please. I didn't mean to sound like a smart alec.
defcon9, No offense taken, and chime in anytime. Barlow
I have a 14" contender chambered in 30-40 Imp. Haven't had a chance to use it much but this might be of interest...
30-40 Ackley Improved - Developed with the object of attaining approximately 308 Win/30-06 level velocities in small actions like the Model 97D rifle and TC Contender. The narrower body diameter and Ackley Improved shape produce minimal bolt thrust. These loads were worked up in our Model 97D falling block rifle using Dry Remington Brass and a Dry Chamber to take advantage of the Ackley shape in reducing bolt thrust. Primers were CCI Large Rifle. Three pressure indicators were watched for: Primer Flattening, Chamber sticking, and Block Dragging. After firing the maximum load (below) the Model 97D action always opened easily (without dragging) and the cartridges ejected freely (without sticking). Primers were not excessively flattened. Different guns (even different Model 97Ds) could behave differently. Always start low and work upwards gradually (.5 grain increments). Watch for pressure signs in primer flattening, chamber sticking, and/or block dragging and STOP INCREASING.
* For Reference Only - We Do Not Build 97D Rifles nor Contender Barrels in 30-40 AI!
Cartridge Bullet Brass Primer Powder Starting
30-40 Ackley Improved 178 gr Hornady Amax Rem CCI-200 V-160 47.0 gr 52.0 gr 2,541 fps 30-40 Ackley Improved 150 gr Hornady SPT Rem CCI-200 V-150 47.0 gr 52.0 gr 2,954 fps
Any time you can increase case volume the velocity will go up when loaded to the same pressure. gin11's reference loads scare me if they were fired in a Krag with it's one locking lug bolt. With it's case head spacing on the rim, fire forming is made easier. Shooting in and original Krag where it's collector's value is not an issue it makes sense. You can gunsmith the action to improve it's strength by lapping the locking lug a few thousanths until the guide/safety lug bears against the receiver. This is a feature which allows the Norwegian KIrag to fire the still mild in pressure 6.5X55 in it's original loadings. AC