What gets a can hotter -- slow fire or auto? Mythbusters.

[SHIVAN]

It is pretty interesting, to say the least. If I had hypothesized before seeing this, I would have said, "Full auto, 200rds would be a lot more heat transfer..."

Seeing this graph of each is eye-opening.

[mtk]

The graph needs a mark on it showing when the firing stopped for each line.

The different shape of the semi plot is most likely due to the longer time it took to fire 200 rounds compared to the full-auto plot.

[exkc135driver]

I originally planned to use two Beta Mags but they proved unreliable.

The video shows that Beta-C mags were used during the semi-auto portion and 30-rd mags during the FA portion. IIRC, the first B-C malf'd 4 or 5 times and the second B-C malf'd once. There were no malfs using the 30-rd magazines.

I found this very interesting, especially considering that the B-C mags were only being fired at a rate of 1 shot about every 1 or 1.5 seconds.

[rsilvers]

I did not add lube them up with graphite. I assumed they were fine as I had not used them much if ever.