Trimming .223 brass

johnnyreb65

johnnyreb65

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Some trimmers can do their job without having to re size first.Question does it make a difference when the brass is re sized?
 
Good question, and I don't know the technically correct answer...

I usually size first - the cases do stretch a wee bit in overall length (obviously, not the body) during full length sizing, I have found.

The question is, then when I trim, the (mandrel? where the case mouth fits) can potentially stretch the case mouth a bit. Bullets still seat firmly and properly, but I've always thought I should probably run the cases back through a neck sizer after trimming.
 
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johnnyreb65 said:
Some trimmers can do their job without having to re size first.Question does it make a difference when the brass is re sized?
Click to expand...

If you are using range pick up brass = Size then trim

brass shot in your rifle and neck sized = Size then trim but prob. does not matter

my brass shot in my rifle ? i would Full length Size then trim

my 2c

or buy a X-Die
 
i keep sizing and checking brass length,when most hit the max length or very close i trim theme all.i have enough 222 brass so any that are at max or close get set aside while i am loading until i have 75-100 tha need trimmed.depending on how hot your loads are will also have an effect on how often you will have to trim.
 
I'm new to reloading, and vague on what will happen with NOT trimming..

too long of brass will cause chambering issues right?
 
That, or they are get too tight in the chamber and can cause a big pressure spike. Which would be bad. Don't use overlength brass, mkay?
 
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