The only caveat is seating depth. The lead bullet has lube grooves, so if that makes it longer below the crimp groove, it will seat deeper, and that raises pressure. Unfortunately, BTB's site's View Details database is broken so you can't bring up the bullet details any longer. The Hornady bullet, seated into a 1.285" long case with a COL of 1.600", has 0.525" seating depth into the case.
In this case, for calculation purposes, measure the length of the BT bullet (they make 300 grains in WFN and LMN DCG, so I don't know what you mean by LFC?) to compare to that 0.525" number, use:
Seating Depth = 1.285" + bullet length - 1.600"
QuickLOAD suggests a tenth of an inch deeper seating would raise pressure about 37%. This is not a linear thing, so actual numbers are needed. At 14 grains, with a lead bullet, that looks like it is still under the line, pressure-wise. The Hornady maximum load would not be.
Edit:
If you have the LMN DCG, the two crimp grooves would let you choose the longer cartridge length, so I am guessing you are talking about the WFN. That one is stubby enough that its seating depth should be the same or slightly shorter than the Hornady, using its crimp groove, so that would make it OK to go with your charge.