Board Thread:Off Topic/@comment-24993958-20151118083252/@comment-24891101-20151204191328

Arkantos:

Explosives are not my field. But I can give you some comparisons.

You seek a maximum size object that this semblance can affect. A standard drum has a nominal volume of 200 L. For comparison, a Mark 82 500lbs bomb is approximately 129 L, of which only 40% (87kg) is Tritonal (marginally more powerful than TNT) or about 50 L. The Mark 83 1000lbs bomb has a filling weight of 202kg, 122 L, with the bomb itself about 300 L. The Mark 84 2000lbs bomb has a filling weight of 429kg, 260 L, with total volume of 540 L. The Mark 82 has a nominal energy output of 863 MJ, which is about 60% of a lightning strike.

Some visual aids:

A Mark 82.

An AGM-123, which is a Mark 83 with rockets and guidance strapped to it.

A GBU-31, which is a Mark 84 converted to JDAM.

Now, if you're converting the object roughly to TNT, the explosion of an oil drum should be somewhere between the 83 and 84. If the closest equivalent is a lesser explosive, I can't really help you, because I don't know enough. But since TNT is basically a standard candle of explosives, I'd say you need a maximum size much smaller, because as it stands it's suicidal to use and gratuitously overpowered.