I am curious how many 375 to 480 grams rats have you fed to your BP unless of course you do not have 2500 grams - 3500 grams BP.
Ideally feeding smaller preys to adults is recommended for safety reasons as well as allowing them to feed with more constancy.
Large animals including 3500 grams animals do not need large preys to thrive.
In general I feed hatchlings and juvies a prey = their girth size without ever feeding anything larger than 120 grams rat even to my largest adults.
Can they take down larger preys? Yes, do they need to? No