I just picked up a Winchester Classic Laredo LRH in 300 Win. I'm wanting to do an extended magazine. I've been looking at the Wyatts MBE-8. It is 3.825" internal, 3.910" External. Who are you guys using for Winchester rifles? This is my first project on a rifle not based off a Remington or Remington Clone. I'm not getting good results with Google searches.