257bob Posted December 3, 2006 Report Share Posted December 3, 2006 I am in the process of getting together the components to build a Custom 7mm Ultra Mag off a Rem 700 action. I have decided to go with a Hart barrel. What rate of twist should I order? I plan on using a 140 grain bullet most of the time, but will also play with some 160-168 grain bullets. I have searched the web a little but have yet to find the info. Any input would be appreciated. Quote Link to comment Share on other sites More sharing options...
CDubWSR Posted December 4, 2006 Report Share Posted December 4, 2006 Re: Question for the Gunsmiths Josh, you know im no gunsmith, but in that fast of a caliber a 1:11 or 1:10 outta get the job done. AJ can probably give you a for sure answer though. Also you may want to go to www.longrangehunting.com and post over there. There are a lot of guys that know what they are talking about, inparticular a gunsmith by the name of Kirby Allen who goes by fiftydriver on that forum. He specializes in big magnum calibers. Ive got a 300 rum in layaway right now too... Quote Link to comment Share on other sites More sharing options...
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