Slightly lower the shield freeze rate (when you take it out) to give the user the feel of "blocking" the bullet. Basically, pull out the shield at the last second before the bullet hits you to absorb some damage. With just enough time to recover from the bullet spam. The shield freeze rate nearly has a freeze rate of a Peacemaker which is a long freeze rate. Make KSG feel like it's a combat shotgun. With a shield that has some freeze but not a lot of freeze can make the combat more interesting as now you can block bullets to reduce damage.