I have the Bighorn TL3. It has the small shank Savage thread that can be either shouldered, or used with a the Savage/nut Pre-fits. The TL3 has an integrated/machined recoil lug. The SL3 is the similar except it is machined to accept the Remington magazine box. I use the Criterion Savage nut Pre-fit. The three barrels I have acquired deliver exceptional accuracy and consistency. I like using the nut setting my head space to exactly match previous or other my other rifles(of the same cartridge) die/headspace dimensions. It takes me less then 20 minutes to install a barrel……. without the cost and wait time…
This is very good information, thank you!
BTW, I have a Zermatt TL3 SA, contemplating barrel options...