I don't think this will ever
be completely resolved! There are SO MANY good points on both sides. Facts and examples abound, so who can say who's right?
Mags loaded for years fire like new. Others say download by one (or even 2) for spring life. I even posed this question to Mas Ayoob in the GATE forum.
In his book "...Gravest Extreme", he recommends downloading. The book was written in the 90's. I asked if his opinion had evolved. Metallurgists have been cited saying downloading is not necessary.
Mas said his springs didn't go to metallurgy school (
) and he still recommends downloading. Now, are you even more confused?!?!