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250-3000 AI

4350 is a good powder to work with, and don't forget to seat at .050 off the rifling until you have it figured out......
 
My dad just built one of those and is having really good luck with RL15. Sorry, I dont know the charge weights, but that powder is working well.
 
You may want to check out Sierra's data on the 250 AI in their last manual - they have data on bullets up to 115grs. Judging by the comments made on this cartridge in their manual, it seems to be one of their favorite cartridges.
 
Sierra will tell you that they use the 250AI for their accuracy testing in 25 Cal.I have one now on a Remington 7 Action with a Lilja and it shoots "Bug Holes" with H4350 with the 110 Gr Sierra and a real suprise is 2015 with the 75 gr bullets.
Jim
 

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