just buy the alcohol wipes for cleaning the odd barrel now n then....
https://www.ebay.co.uk/itm/100-IPA-FASTAID-70-ISOPROPYL-ALCOHOL-SWABS-WIPES-PRE-INJECTION-TATTOO/271227481280?epid=28003298498&hash=item3f266aecc0:g:Wg4AAOSwjVVVu5ji
normally they are folded squares, unfold it to a rectangle, cut with scissors
(you will likely need scissors as the swab doesn't tear very easily)
take one of the two squares, fold in half, stick in cleaning rod, jam in barrel
give it a clean, discard & use other swab to finish off
shove a couple in ya bag in case ya gun gets drowned or buried in dirt etc....
easier than carting a bottle of very flamable liquid about - great for getting bbq's/bonfires started btw
(seriously - that alcohol needs to be stored with some common sense though, it goes up well)
Same as not leaving ya gear in your car with a gas can in ya bag
a couple of car windows have been blown out when gas cans cooked over the summer
OK we have probably had our summer now, but just saying wipes "might" be easier or better suited perhaps
(yeah OK you are not likely to carry a bottle of alcohol around I know, but wipes might be more suitable in bag)
Just highlighting some safety crap as we have had a couple of warm days
But yeah 99.9% alcohol is good stuff for cleaning many things, the bottles are pure 99.9%
wipes are 70% - use what you like or have to hand I guess