The weight might tell us more. But if it is a weak strike, why? Most of the times a weak strike will be a thin planchet.
http://www.error-ref.com/rolled-thin-planchets/But with the circulation factor, that might alters the surface also. So if the weight is close to normal, there may have been some grease in those devices that are weak?
The die is also in the VLDS when your coin was struck. (note the die flow lines) So a lot of factors could be going on with your coin. (It could even be a combination of events)