STWs are Pre ultra mag. So no, the STW was not built on an ultra mag action. The port may be the same size, as the early actions were also used on H&H rounds
STWs are Pre ultra mag. So no, the STW was not built on an ultra mag action. The port may be the same size, as the early actions were also used on H&H rounds
.223 Rem AI, .22-250 AI, .220 Swift AI .243 Win AI, .6mm Rem AI, .257 Rob AI, .25-06 AI, 6.5x300wsm .30-06 AI, .270 STW, 7mm STW, 28 nosler, .416 Taylor
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