The 44 mag would be a fun gun, the price really makes me miss the old H&R handy. That would be another topic.
I am glad to see Ruger has offered a full line up (plus one) in No1 rifles. I will wager the 7x57 aka Rigby will sell. Nice option. Classic caliber in a good hunting gun.
I have to wonder, if you build a No1 with a long enough and heavy enough barrel can you expect top notch accuracy. I mean the 6.5 is for what purpose?
