Trying to predict college bigs 3 point shot is risky, many bust if they don't have it. Here are some PFs/centers over 35% their year in college
Reliable NBA 3pt range (35% + )?
Derrick Williams - nope
Anthony Bennett - nope
Kelly Olynyk - nope
Markieff Morris - nope
Chris Singleton - nope
Patrick Patterson - yes
Michael Beasley - nope
Kevin Love - yes
Ryan Anderson - yes
Some of the "no's" may eventually turn into reliable 3 point shooters but its a crap shoot. With Kaminsky's low release, I'd say at best, he only has a 50/50 chance.