That 's a pretty common grade and is easy to work with. The shops I have worked in usually cut it with a bandsaw and then bevel it with a tri-tool or equivalent (most I've seen are pneumatic), and you'll want a good sharp bevel with no land. Plasma cutting is an option, just depends on what you like (this option takes a lot of grinding afterward to get a good clean weld surface). Go with a 1/8" gap, a good argon purge, and GTAW with 1/8" 308 wire. It's just about as fast to just use GTAW all the way out, I've also seen shops go to FCAW after the root, SMAW is definitely the last choice you want to go with when welding stainless, I've yet to find a s.s. stick rod that welded worth a sh!t! Be sure to keep a good purge on until the filler is in, if possible leave it on until you're capped out. Amperage is about the same as carbon steel welding, the biggest trick is to not let the pipe get too hot. We will often cool it down between passes with water in spray bottles, preferably de-ionized water. Hope this helps.