Can you find any data for it with the 338? That's why.
hrm didn't realize how small of case lapua had
adi ar2218=h50bmg adi makes hodgons extreme powder
quickload results 26inch barrel 300g berger
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 104.0 91.7 5.94 2627 98.2 52295 12578 1.474 ! Near Maximum !
Vihtavuori N570 100.4 87.7 5.68 2627 98.1 53301 12272 1.487 ! Near Maximum !
Hodgdon Retumbo 103.9 86.5 5.60 2594 100.0 53301 10678 1.480 ! Near Maximum !
Ramshot Magnum (Big Boy) 94.3 83.6 5.42 2564 100.0 53301 10729 1.490 ! Near Maximum !
PB Clermont PCL 517 94.6 83.7 5.42 2564 100.0 53301 10721 1.490 ! Near Maximum !
SNPE Vectan SP 12 94.5 83.5 5.41 2562 100.0 53301 10693 1.491 ! Near Maximum !
Norma MRP 2 99.0 82.0 5.31 2561 100.0 53301 10857 1.509 ! Near Maximum !
Vihtavuori N560 91.1 77.0 4.99 2551 99.7 53301 10832 1.499 ! Near Maximum !
please do not try these, if you use it for reference work your way up