[Hardastarboard]

I used to have that many, but then I stood up in my canoe and. . . .

When it tipped over, so many guns spilled out that the level of the lake rose. Fortunately it was a very deep lake.

[HartleyMBaldwin]

An accident such as you describe would cause the level of the lake to fall, not rise. When the guns were in the canoe, they were displacing their weight of water, but after they spilled, they were only displacing their volume of water.