Hi Folks

Just picked up my 110 BA in 338 Lapua today. Here are a few questions:

1 - What do you think about lapping aluminum scope rings?
2 - What powder(s) and charge(s) do you used for 250 grain bullets?
3 - Do you have any issues with the rail that comes with the rifle?
4 - What is your opinion about barrel break-in?

Thanks