extraction problem

Guys, my problem is nothing special. I've bought older XCR Gen 1 rifle in 338 RUM. I have some Federal cases from factory ammo and new unused Remington cases. The Federal's bottom of the case measures around 0.533", no problem with it. It flies nice far out by repeating. The bottom of the Remmy...

I put together a Remington 700 in 222 remington with spare parts i had around the shop. Factory takeoff barrel, everything stock except for the recoil lug. The problem is it wont extract! I re-soldered the bolt handle to time it, headspaced properly and polished the chamber. I removed the...