Ok, change of plans. Since 330's are pretty expensive, I've opted for some 110's and 160's. So, I've got some coming - 2 dozen 110's and 1 dozen 160's, which wound up being cheaper than the price of 1 dozen 330's!! I would have gone with 220's, but the price on the 160's was darn good, and I didn't think 1 inch would make a terribly huge difference.
Yes, I know 110's and 160's won't work on beaver. lol I figured I'd trap the smaller critters until I can get enough to buy some 330's.