Semi Chisel, Skip Tooth in .325?

I've been reading through a lot of the posts on here, enough so that everything is getting jumbled together. But I have determined that I would like to try a semi chisel, skip tooth chain. But I'm having a hard time locating any in .325. Is there such a critter, without buying a roll of it? I'd like to try just a single loop first, see how I like it.

Saw is a MS290 with an 18" bar. And I've done the muffler mod.

I'm cutting standing timber, clearing some trees on my property. I'll also be scrounging trees to feed the habit of an insert I'll be installing shortly. If nothing is available in what I was asking for, I'll take any recommendation as to a good chain for my purposes. Thanks

I've used full chisel, in fact it's all I've ever used. But it dulls rapidly, and I can never seem to get it sharp enough on my own so I'm always dropping them off to get sharpened. From what I've gathered, the SC is easier to sharpen. I'd like to find out.

CB - See that's one of the things I might be confused about. I'm under the impression that if I wanted to use 3/8, I'd have to have a different drive sprocket, and nose sprocket? And thanks for the link - can you tell me how I go about determining how many drive links I would need to order? I'm not sure how to figure that out.

Awesome. Thanks for that info!