I need some suggestions for OAL to use for 158 grain X-Treme brand plated semi wadcutters in 38 special. I'll be shooting a S&W 686 with 5 inch barrel. Mostly plinking and punching paper and I'd like it to be reasonably accurate. I'm thinking of around 3.5 grains of Bullseye powder. I'm thinking [from what I've read using the search function] that OAL won't be especially critical with relatively light loads but the load manuals seem to be all over when it comes to OAL and I find nothing specific to X-Treme plated. Any suggestions? Thanks.