I think you'll find the information that you are looking for at this link.
http://www.vihtavuori.fi/vihtavuori/index.html I have shot lots of Lapua factory ammo and have encountered it in use my many military snipers around the world, mostly in SE Asia. The typical load is the D46 using a 185 gr. full metal jacket boat tail.
Personally, (my own humble opinion), the Lapua bullets are superior to the Sierra bullets. I have used both in 1000 yard competition and the Lapuas consistently gave me higher scores.
I used the 185 gr. FMJBT (yep the full metal jacket bullet, not the HPBT) pushed at 3150 fps, using 91.5 - 92.5 grains of H-1000 powder. This is a high pressure load in a rifle with absolute minimal headspace. DO NOT USE IT IN A STANDARD CHAMBER.
The 195 gr. FMJBT is a great setup also. Take care and Merry Christmas