7mm Backcountry 1st shots

[AP2020]

20" barrel getting these velocities!

 

[dantiff2]

Nice vid! That action looks a lil rough however. I personally don’t like when a rifle takes special attention to “run”. Is extraction tough with steel cases?
Dan

 

[ELR LVR]

Just read - Chamber pressures approaching 80K?

 

[AP2020]

Nice vid! That action looks a lil rough however. I personally don’t like when a rifle takes special attention to “run”. Is extraction tough with steel cases?
Dan

Yeah, my 1st go around with the M307. The magazine was acting funky = drooping and I had to push up to get the bolt to strip the next round. I am contacting Weatherby to see what the issue may be? Extraction was not tough, it was my still trying to figure out the bolt!

I am producing another video comparing the fired brass to a loaded round.

 

[AP2020]

Just read - Chamber pressures approaching 80K?

Yes, in fact, I ran some number is Quickloads using H1000 [not compressed] and the 0.284 175gr bullets. I could achieve 3,000fps albeit at 80,000+ psi in a 20" barrel.