Now, I'm going to stop right here for a moment to mention that I don't spine these shafts whatsoever. At least, not this particular set. Sometimes I sort them a bit by hand, but they are unspined for the most part. I leave 'em long to help with this, seeing as 3/8" ramin carries alot of spine with it.
Now, most of my small game shots are far from, well, far. These shafts still fly okay, and I still kill game with them. But, if you're going to hunt seriously with these shafts, buy/make a spine tester. It should really help in the long run. Or at the very least, shoot your finished products into a target and cull the ones that don't meet your preformance standards...