For 200 yards I would go with a spitzer nose. If you wanted to go longer range then you would go to a rounder nose. However if you wish to hunt with it you would want a flat nose.

You want a bullet that casts .321 or .322 in diameter.

For 15:1 twist a 190 grain bullet would be the right length. Could go to a 200 grain maximum. 

Leo from Boomer Molds builds custom molds at a good price:

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Larry,
You don't have many choices in 32 GC molds. There are 2 Lymans to look for on Ebay. The 321295 (175 gr) and 321297 (180 gr).

NOE has this one in stock if you want to spend this much. It will cast about .324+ and you'll have to size it.

Boomer will be your best option for a single cavity. Have him add at least 1/8 to the above bullet for your twist rate. I can shoot at least a 1 1/8 long bullet in my 15 twist and your is a little faster.

If your looking at using it for target work, there are no target GC molds available. If that's the case PM me.

Frank

Edit:
I forgot to add the link 

Here it is:

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FWIW, Leo (Boomers Moulds) will also cut 2-cavity moulds - I have a 2-cavity .308 mould he cut for me...
Used it yesterday to cast up some bullets.