firing into a grapple

[MarkB]

i dont know about a, but i think the 50% chance of hitting the other grappler phases out the rules on cover.

So, how do people handle grappling situations with different-sized creatures? The rules say that the target struck when firing into a grapple is determined randomly, but they don't define how randomly - it's never stated barely as a 50% chance.

Personally, I make it a 50/50 chance with grapplers of equal size, but for other situations I tend to go by the number of squares occupied by each opponent. So for instance, when an ogre is grappling a human, they share the same space, but the ogre is taking up eight 5-foot cubes, and the human can only be in any one of those cubes at a particular moment - so I'd ask a player firing into melee to roll 1d8, and have him strike the human on a 1.

This requires a degree more number-crunching as size differences increase, and as the number of grapplers increases, but it seems fairer than a straight 50/50 chance.