Lee Large Series (1 1/4×12 thread) 338 LAPUA Factory Crimp Die used with the Classic Cast Press only crimps the bullet in place more firmly than any other tool. Tests demonstrate that even bullets which have no crimp groove will shoot more accurately. A firm crimp improves accuracy because pressure must build to a higher level before the bullet begins to move. This higher start pressure insures a more uniform pressure curve and less velocity variation. Specifications for LEE 90745 FACT CRIMP DIE 338 LAPUA: Manufacturer: Lee Cartridge: .338 Lapua Magnum Gun Type: Rifle Package Contents: LEE 90745 FACT Crimp Die 338 LAPUA The LEE 90745 FACT CRIMP DIE 338 LAPUA is a quality addition to the Lee Precision lineup. For more great deals on Reloading Dies by Lee Precision, please browse our Lee Reloading Equipment page.
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jbx648 –
This die performs exactly as described in Lee literature. No cannelure is required to crimp, and case length is not critical. However, the die is large and has a 1 1/4'x12 thread size. This means it will not fit in a press that only accommodates 7/8"x14 thread size. I have only experience with RCBS presses. The die will fit in a single stage Rockchucker press with the 7/8"x14 threaded bushing removed. Removal is not a problem if you have large enough "Stillson" wrench or equivalent. A pipe wrench might work except you risk damaging the flats on the 1 1/4"x14 insert.