freebore

For those who have 300 mag Chambers with increased freebore what kind of velocities are you seeing? I think I've decided on a custom 300 wm barrel over a nosler or RUM and I'm curious how much I'll be leaving on the table.

I need help figuring out how to calculate Freebore (FB) for a 6.5 WSM custom chamber reamer for a new rifle build I want to do. Over the last few years I have had a number of custom chamber reamers made for various builds. In each case I either had a SAAMI reference chamber and drawing I could...

I've got my Vanguard First Lite 257 bee shooting .8s with the Nosler 100s and the Speer 120s at the manufacturer's suggested OAL. It's a pencil barrel, but I think I can tighten this up. I'm curious to hear from more experienced Weatherby loaders if seating depth is a significant factor in the...

I’m getting ready to order a reamer for a 284 Winchester build and was wondering if anyone can tell me the freebore in their chamber that is being used with the 162 ELD-X? I’m wanting to seat the bullet so the shank is above the neck/shoulder junction. The rifle will be built with a Remington...