Re: Loading solids in 338
Longshot,
You are really making some dangerous suppositions!
#1, How much bearing surface difference is there between bullets? You cannot just go by weight.
#2 A Super-Mag case like .338 lapua with 10% less powder charge could be unsafe and prone to detonation.
#3 A solid, like the Barnes 250gr .338 (I have a box I'll sell you!), is a close-range high velocity penetrator. At distance, a matchking will likely perform better as its better BC and thick jacket will retain more velocity and not yaw or tumble on penetration the way a slow moving roundnose bullet will. If you are looking to destroy machinery, then maybe you want the solid.
Either way, I would contact the bullet mfr for load data and go from there.