Collet #3 (no grooves) fits the following calibers: .264 Win., 7mm Rem. Mag., .300 Win. Mag., .338 Win. Mag., .375 H&H, .458 Win. Mag., All Weatherby except .378, .416, .460, .33 Win., .348 Win., .444 Marlin, .45-70 Govt., 50-70 Govt.
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