This Australian company (ADI) also loads the Swift Sirocco II bullet in 150 grain 308 WIN
The 308 is apparently very popular over there for shooting deer, kangaroos and camels.
That is great bullet/round combo.
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There are powders for the reloader were the changes in velocity are minimum with extreme ambient changes. I know Hodgdon and IMR both have such powders.
The Hodgdon powders were developed by this Australian company.
from http://www.chuckhawks.com/outback_ammo.htmlIf you are a reloader, do not despair. Hodgdon partnered with ADI/Thales to market BTI powders in the United States. The Hodgdon Extreme family of powders includes: H4198, H322, BENCHMARK, H4895, VARGET, H4350, H4831, H4831SC, H1000, RETUMBO and H550BMG.