Origin short action, Origin long action and TL3/SR3 long action barrel tenons are all the same. The TL3/SR3 short action is the only different tenon.
Using a TL3/SR3 long action barrel on an Origin action is totally safe, but the engraving (if a pre-fit) will be 180* off as the thread start is at 12 o'clock on Origin's vs 6 o'clock on TL3/SR3's.
Thank you - Ray