Indeed there are tolerances + for all products.
The point in mentioning what is essentially a step down from traditional 00B size to traditional 0B size is that smaller pellets are now the norm for U.S. made high performance small pellet buckshot (ie 000, 00, 1). It is part of the price paid for pattern performance.
Advertised 00B diameters for European ammunition run from .29" to .34".
Last edited by RMcL; November 24, 2012 at 03:32 PM.