Looking over the posts today about the Wyatt's extended magazine boxes for a Sendero in 338RUM. Since I'm wanting to load up 300gr SMK's I turned to Brownells and it looks like they offer a couple of different kinds of boxes for this application, the extended box, and a long window box.
Which is the one to get??
I already have an HS Precision floor plate and magazine system but I'm thinking the longer length is more important than the mags.