315 is good. Also, if closer to 1", one of my favorite layouts is a 1 x 1 x 1 set up. Pin over cg, both pin and cg 1" from PAP. Very even, arcy, good for drier and spotty stuff.
--------------------
"I do desire that we may be better strangers." Willie the Shake, As You Like it(III,ii)
"I'll bet that Jesus would have used HIS turn signal!!"