257 Roberts Ackley Improved
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Old 10-31-2013, 05:32 AM   #1
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Default 257 Roberts Ackley Improved

i might be getting rid of my tc venture in 25-06, reloading dies, and 80 some pieces of rem brass. i'll be buying a encore in 257 Roberts Ackley Improved, 1 in 10" twist, in a 21" mgm barrel. i sent an email to mgm barrels to make sure it has a 40 degree shoulder, so that is taken care of. i have 2 full boxes of 115 grain nosler ballistic tips. do these work for deer, busting a shoulder, etc, or should something else work?
should fireforming be 87 or 100gr? would imr 4350 work? the ack imp is new to me, any help will be greatly appreciated...

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Old 11-10-2013, 12:04 AM   #2
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I can't help with personal experience and you can probably find the same info I did. Sound like your gona have a sweet rifle when done.
basic loads-
http://www.reloadbench.com/cartridges/w257ackimp.html
http://www.accuratereloading.com/257ackleyimp.html
http://www.handloads.com/loaddata/default.asp?Caliber=257%20AI&Weight=All&type=rifle &Order=Powder&Source=

Fire forming on a 257ai-


and - http://gunsmagazine.com/fireforming-brass/

Good luck
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