
   Hi there o'wise & knowledgable Contendervolk, I am but an unwashed & ignorant Contender pretender seeking to figure out a few things about the new T/C Contender carbine that I have paid for but not even got in my hot little hands yet.   But seriously, educate me and affirm (or not) some choices I am thinking about making for this little gun.  It's coming with a 22lr barrel, which I'll keep (everybody's got room for ONE more .22, right?) but, I want to pick up a barrel in 7X30 Waters for it.  I'm thinking about a length of 20-21" for that, but I see that will be a used or custom shop proposition.  
  So, questions: 
 That length should get as much ballistic performance as a feller should need to whack a medium sized deer out to 250 yds, right?
  Would that barrel length be legal with a Choat folding stock?  
  What is the shortest length, over 16" of course, that a guy can use with a folding stocked Contender (pre G-2) that meets the ATF minimum overall length? (26", I think?)
Next: 
  375 JDJ with a Muzzle Tamed 16-18" barrel, what type of MV should I expect with say a 220 gr bullet?  
  375 JDJ on a limited basis ain't too much for an original Contender, is it?
Last question (for now):  
  .223 barrel, 21-23" what twist is standard?  I'd be using 55gr, most likely nothing heavier, but whatever is standard, is it OK with up to 62gr bullets?
Well, thanks a bunch in advance, ya'll...
Chris