300 wm short cases?

[Red9]

Per title. Lyman book says case should be 2.20. Once fired winchester measure 2.10.
So.. Do I trim them all to 2.10? I know its not much but I plan on crimping them.
Reloading for a semi.

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[ar15barrels]

Are you missing a digit in your numbers?

[reverser]

.300 wsm trim length is 2.090”. Max length is 2.100”. No idea where you got your numbers.

[Red9]

Are you missing a digit in your numbers?

Sorry.
Book lists 2.620 as case length.
My winchester cases measure 2.610.
Thinking to trim all the brass to 2.610.

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[ar15barrels]

Sorry.
Book lists 2.620 as case length.
My winchester cases measure 2.610.
Thinking to trim all the brass to 2.610.

300 Winchester short magnum max case length is 2.100"
Trim them to 2.100" as your chamber should be at least 2.110" long.

[Red9]

.300 win mag. Sorry for any confusion.
However that 300 wsm is on my bucket list.


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[LynnJr]

The post title got them off course.
Trim all your brass to your shortest case whatever that is and you will be fine.