HSLD LLC tries different BB weights if they affect the accuracy of airsoft guns... "In today’s video we will be looking at the practical accuracy from a VFC/Cybergun Scar H (MK17) and evaluating the differences that a change in bb weight can make to the accuracy of an airsoft replica.

NOTE: every replica from every manufacturer will be different and may prefer one BB weight over another. Just dropping in heavier BB’s will not immediately create advantages, you will need to spend some time fine tuning the set up to maximize the effectiveness of a heavier weight bb."