Need advice on soldering STEEL parts together

I have a jar of Swif 95-5 TIN-ANTIMONY SOLDER AND FLUX IN PASTE FORM that I got 10 years ago from Brownell and have never used it. My questions is: Should it work for the bolts and other stuff (made form steel) that needs to be soldered on the RG-G gun. How much should I use. Should I just bush some on the parts then clamp them together. Should a map gas torch be hot enough to do the job. Should I leave some space between the parts for the solder. The company I work for uses some kinf of epoxy to glue in aluminum sleeves into tiatnum tubes. They never come out.
Thanks for any advise!
RicochetRichard (that\'s my cowboy name. SASS)

[Dave]

Dont leave any space for it, just lightly flux it and solder it, it will find its way in there. I use propane... Clean it well when your done, the flux that is left will make steel rust, fast!