Last summer I took my ruger 50 cal with me to the range and shot it some when I got home I was in a hurry to get the rifles clean (8) and I remembered that some were useing windex to swab with found some under the sink with ammonia tried it on the ruger and it worked great and fast.I usually just use soap and water also but will have to try the windex again.I use the rem oil with teflon or any other oil with teflon,I think it helps seal the pores in the barrel and makes it smoother.
In my savage I just use 50 bmg same as I use in my reg rifles.
I also if shooting either a bit through the year,give the barrel a good 50 stroke cleaning with JB bore cleaner about twice a year depending on how much I shoot it.