It is impossible to clean one's gun when it is loaded because the parts that need to be cleaned cannot be adequately accessed when a round is chambered.Scripture doesn't tell us that it is a bad idea to clean your gun while it is loaded, yet we can learn not to do something harmful from the "anecdotal evidence".
The "cleaning the gun when it went off" is a euphemism used when someone doesn't want to admit that a person may have committed suicide.
Back to the alcohol discussion. I've seem many of these debates over the years. In my opinion, the anti-alcohol side builds it's case on one or more of the following ideas:
1.) Negative consequences from immoderate/irresponsible use of alcohol. (This is the same kind of thinking that vilifies guns instead of holding people responsible for what they do with guns.)
2.) Out-of-context wisdom statements from Proverbs instead of the careful consideration of the whole counsel of God from both Old and New Testaments.
3.) The assumption that because they (or family members) were previously (or currently) irresponsible with alcohol, that everyone else is as well.
4.) The assumption that those who advocate a scriptural position regarding moderate use of alcohol are really just looking for an excuse to get drunk.
5.) That modern blood alcohol levels for driving while under the influence are an appropriate measuring tool for an appropriate biblical level of drunkenness. (Especially in regard to the mild dulling of the sense of taste that may have normally occurred during wedding celebrations such as the one recorded in John 2 at Cana.)
6.) That there was some sort of anti-miracle going on in New Testament days where a group of biblical believers could get together and all drink some sort of "non-alcoholic wine", yet a few immoderate people were somehow getting drunk off of it.
As I have mentioned in previous discussions, I didn't touch anything alcoholic until I was 33, and have never had enough alcohol at any one time to get my blood alcohol up to a level where it would be unsafe for me to drive. However, I occasionally have a small glass of wine for health and social reasons (not because of peer pressure, but to receive hospitality and serve as a model of moderation for others). It was actually my Christian convictions that has led me in this direction.