Lassie-not knocking you but 3920 with a 25/06AI and 87's is really out there...either you're toting a 30" plus barrel and or a rubber mallet to pound the bolt open..
What length tube and what is your load data to get a 87 to 3920?
And trust me when I say that I'm not the only one who's gonna call on this one.
Thx Dober
You just need to line up the conditions right...
Move the sensors on your chronograph a little closer together, high elevation, and of course, the critical 500mph tailwind.
