There isa difference in the ingredients or composition of the two.I just use the summer blend and have such good luck with it, I am not about to change. I was told by a mechanic that there is an additive in the winter blend that helps it stick to the windshield and not freeze. I am not a chemist so I do not know if he is right or wrong. He was telling me that is why in the winter you will sometimes get a film on the windshield when you clean the windshield. For that reason, because of a suspected film, I stayed away from the winter blend.

Go ahead and use the winter blend. I am sure it will work just fine. The main thing is swab the barrel, and what you use, you want it to start drying itself. The alcohol does that. Mix it 50/50 and you should be good to go. Some people use Windex (or the cheap bargin brand of cleaner)and isopropyl alcohol and have excellent luck with that. Other use pure window cleaner. Some use spit. Some use soap and water. On my tradiitional rifles I use straight isopropyl alcohol when it gets cold. I found it still cleans the fowling but reduces hangfires and misfires.

Not wanting to really confuse everyone, but I have been experimenting with even an a new solution. And it shows a lot of promise. There is a cleaner out there called Simple Green. This is some really good stuff by the way. I mixed up a solution of swabbing fluid using alcohol and water/Simple Green cleaner (because I was too lazy to walk to the garage for the windshield washer fluid) and was swabbing the barrel with that. It really took the crud out of the barrel. I have been using that bottle of solution when I clean the rifle at the end of the day. It really cuts through the fowling and crud.

The important thing is to swab the barrel with what ever works for you, and get the fowling out so each shot is consistant to the next one. That reduces the crud build up, help with loading, and is a safety factor against short loading.