Thanks you both for the comments.
I did a couple hours of research on using Mobil 1 as a gun lubricant, and wow, do I feel like a fool!
With few exceptions, from what I can tell, most of the experienced folks out there seem to say that it runs every bit as good and even better than most gun oils. Summing up a few of the comments in response to shock and resistance to using synthetic oil as a gun lube: "you use Mobil 1 in a $40,000 machine that runs at sustained high heat, pressure and extreme friction but you're worried about using it as a lube on your gun"? LOL. Mobil 1 is one of the best engineered lubricants ever and has added corrosion inhibitors too.
Wow, I feel like a total sucker who got totally drawn into the gun oil marketing hype. ☹️
Do either of you recommend any particular viscosity? 5W-30, or 0W-30 perhaps?
Thanks again for the helpful info, I really appreciate it.