I think what you are getting at is "will an uncrimped hull of a certain size fit my chamber....or be safe in my chamber" ? If it fits, it fits. My side by side has looong chambers, so an uncrimped 3" hull just slides right in, with room to spare. Whether a certain length hull will fit YOUR chamber, you'll have to find out for yourself. But, if it fits....and you are not jamming the mouth of the hull into the forcing cone...then there is NO problem.
The other two condiderations would be : 1) Is the load safe in the first place ? Crimped or uncrimped with wax - that is the same deal. Uncrimped does NOT cause a pressure increase. 2) You need to save about 1/4" of hull length, in the mouth, in order to have enough room for the overshot card plus wax seal.
I hope that answers your questions.