Talley PSM8160ACI Picatinny Base Weatherby 307 Short Action 20 MOA

Description

The Talley PSM8160ACI is a purpose-built Picatinny base for the Weatherby Model 307 short action, and it does more than just give you a place to clamp your rings. This rail carries a 20 MOA forward cant to stretch your usable elevation range, plus a built-in anti-cant indicator (that's the ACI in the part number) tucked into the rear of the rail so you can level your rifle without hanging a separate bubble level off the tube.

Talley cuts these rails from high-grade 7000 series aluminum alloy and finishes them with a hard-coat anodizing rated to 65 Rockwell, which is where that tough black surface comes from. The result is a base that holds up to hard field use and weather without adding the heft of a steel rail. Every base runs to what Talley calls the industry's tightest tolerances, so it drops onto the 307 receiver and lines up the way it should.

Why the ACI on the PSM8160ACI Matters

Rifle cant is one of those quiet accuracy killers that gets worse the farther you shoot. By machining the level directly into the rail, Talley removes the guesswork and the alignment errors that can creep in when you bolt a level onto the scope tube separately. Combine that with the 20 MOA slope and this base is aimed squarely at folks who want to dial for distance and trust their zero.

Fitment and Setup on the Weatherby 307 Short Action

This one is cut for the short action version of the 307, so it matches that receiver footprint and uses 8-40 screws. A quick note from the pros at Talley: blue Loctite (242) on the receiver screws is fine if you want it, but skip anything stronger, and skip Loctite on the ring screws entirely. Always check Weatherby's torque specs for the receiver and use a calibrated wrench so you don't overdo it. Once it's on, you've got a MIL-STD-1913 platform ready for any Picatinny rings you like to run.