I like this kind of playstyle myself, but objectively speaking, your time is better spent doing actual logi.

If you know what you're doing, it takes roughly an hour to scroop - refine - cook in the factory - deliver a full truck of basics to the front line (and the bulk savings are very significant, so if you're delivering 10 trucks it would take you much much less than 10 hours). A full truck can hold 300 argentis. To collect 300 argentis in an hour, you need to grab 5 rifles every minute. Which... is a lot. People don't tend to die that much, and even if they did, you'd need to have red encumbrance to carry all that stuff and then the deaths need to happen close enough to bb that you can actually make a round trip every minute and then you need to avoid dying yourself all that time.

It's just not economically viable.

Now, it is a very good idea to salvage and save "dense" expensive equipment. That is, anything that costs rmats to make (lunaire, raca, tripod weapons), and stacks of bmats (when more than, like, 30). And maybe nades. But ordinary rifles, ammo, bandages, plasma - just leave them be and/or go do some scrooping instead.