Silhouette Rules

[deepwater]

Is it permissible to retrofit a crescent butt plate with a leather/padded cover to create a shotgun profile butt plate?

[Don McDowell]

I haven't seen anything that would prohibit that.
You can find the rules on the NRA's web site.

[excess650]

That should be fine provided you don't exceed the 5-1/4" (?) dimension heel to toe.

[runnin lead]

Or 12# 2oz weight limit