Re: 300 - 338Lapua
I have a 30-338 Lap imp. So far I have not run any of the heavy 30 cal bullets. This last hunting season I ran the 180g Nosler E-tips because they have nearly identical bc's as the 200g Accubond and I could push them a few hundred fps faster, making them out perform the the Accubond at all ranges. I am currently running them at 3600fps. I would say this is a bit on the hot side, but so far brass seems to be holding up fine.
If you go with the improved design you should be able to expect 3200-3300 fps out of the 240g SMK. This is going to be a tough combo to beat out at great distance. I am currently waiting for some GS Custom bullets to arrive and start testing them. On paper The 177g GS bullet will beat the 240g SMK out past 2000yrds for windage and drop.
I am leaning this direction for bullet choice simply because I prefer a dedicated hunting bullet that does not easily fragment. This just my preference, and not putting down the SMK choice in any way. Many hunters here have had great results with the SMK.
The 30-338 Lap imp is going to be pretty much the hottest 30cal you can get. There are slightly different designs in this chambering that will run a little + or -. Kirby Allen is the man who talked me into this chambering. I was not able to use his design because I already had my rifle with a different smith. His is a little hotter that mine, I believe his is the hottest design available. I would highly recommend him to do the work for you.
Good luck, Steve
To hunt... or not to hunt...? What a stupid question.