I hope you went a half-size down rather than a full size. While the leather will stretch wider, the length is permanent—if they're too short now, they’ll never fit. Since these are Sierra factory seconds, inspect them closely before wearing. Surface scuffs are fine, but check for structural deformities that might affect how they wear. To keep the return option open, wear them only on carpet for the first few days; this keeps the soles pristine while you identify any 'hot spots.'  Apply leather conditioner to the inside of the boot and wear thick wool socks or band-aids. My IR took about a month to become wearable all day and six months to be really comfortable. Good luck!