Weatherby 6.5 WBY RPM Unprimed Brass, 20ct – Select Plus

Description

This is genuine Weatherby brass made for the 6.5 WBY RPM, the beltless magnum that Weatherby purpose-built for its slim six-lug Mark V action. The cases ship unprimed with no powder, so you've got a clean slate to work up your own loads. If you're running a Backcountry, a Model 307, or anything else chambered in this round, these are the cases cut to the right dimensions for the job.

The 6.5 RPM is an interesting cartridge to load for. It's based on a lengthened version of the .284 Winchester with a large body diameter, minimal taper, and a steep 35-degree shoulder, all of which pack in more powder for serious velocity. The rebated rim is where the "R" in Rebated Precision Magnum comes from, letting it headspace on a standard .473 bolt face while the case body runs wider to make room for that powder column. In the right rifle you're looking at a 127-grain bullet in the 3,200 fps range and a 140 cruising past 3,000, so good brass that holds its shape through repeated firings matters.

What Sets This 6.5 WBY RPM Brass Apart

Weatherby runs these cases through tight tolerance checks on things like case dimensions, primer pocket measurement, weight, internal volume, webbing thickness, neck concentricity, and case hardness. The primer pockets are CNC-machined to match-grade specs, which helps with consistent, reliable ignition shot after shot. That attention to detail is a big part of why reloaders reach for factory Weatherby brass instead of trying to form their own.

Getting the Most Out of Your 6.5 RPM Cases

Start with a solid load manual and work up gradually, keeping an eye on your primer pockets as a sign of brass life. These cases are built to take multiple reloads when you treat them right, so trimming to length, cleaning the pockets, and consistent sizing will stretch how many firings you get. For anyone chasing repeatable accuracy out of a 6.5 RPM, starting with quality brass takes a big variable off the table.