I have just aquired an unopened pound of this from a buddy of mine and was wondering if anyone has used it for any of the above named applications. I couldn't find anything in their reloading guide.

Im sure you have probably already looked... I just looked on their site and they don't have a load for 38/357 for that powder

Are you sure you don't mean V-V 3N37? I've loaded that in the past and it's a great powder for mid-range loads in 357. Clean and powerful, 7.0 grains will give 1150f/s with 158 grain LSWCs.