Thread: 250 Savage Ackley Improved

Greetings,
Layne Simpson did an article on the 250 Savage Improved in the October 2018 Handloader. His version had a 30 degree shoulder but results would be close to the AI. I found the article on the open internet so you should be able to find the article by searching. He used 42 grains of AR2209 with the 100 grain Sierra Pro Hunter for 3,068 fps. As always start low and chronograph to validate the data before working up. Each grain of powder should yield around 50 fps, You could also look for data for the .25 Creedmoor which is close to the same capacity but as an in wildcat pressures are liable to be super hot. Lastly I believe that Sierra may have data in their latest manual.
Regards Grandpamac.

Much appreciated guys, thank you. Yes BB, be keen to see your data, can never have too much info. Thanks Tech, I'll use that recipe for fire forming, I have Rel 15 so well on track.