Hello, Iam new to the site and looking for some info. Iam building a gun for my daughter and looking for a little help. I have a Carl Gustaf 1915 model m/94 carbine in Swedish 6.5x55 cal. I am looking for the best caliber to re-barrel this mauser action in to be a solid sporter/shooter in a 24" +/- barrel. I know that this is not a high dollar gun but it has a great sentimental value as it was my fathers gun and I want to do this as a gift to her. I have kicked around several choices .243, 6mm, .257 Roberts etc. I would like a caliber that performs well and ammo that is easy to find. any help on this would be great.... Thanks Page