[dmine]

New brass here seems to be sized but not trimmed, is that normal? Should I trim AND size it? Thanks

DMine

[mongoose33]

If it's too long, new or not, it needs to be trimmed.

You don't say what kind of brass (rifle, handgun) it is, so that will also affect the response. But if it's rifle, you need it to be the right length, whether or not it's new.

[Remo-99]

Are they under the maximum length for your calibre, but over the minimum length?
If it's new brass they should be, but it pays to check 'em.

And do you need uniform lengths for uniform crimps?

[The Bushmaster]

Always full size new brass and measure. if trimming is needed, do it and finish it all off with chamfering...

[SEMNshooter]

I always do, full length size and trim if need be. I follow it up with a chamfer, whether I trim or not. I have heard arguements from both sides. My reasoning: Thats how I was taught by my uncle when I started. Haven't had a bullet seating or round chambering issue yet.

[lgbloader]

Should I trim AND size it?

Nope, you should size it and then trim it.

LGB

[Walkalong]

I...........Size all new rifle brass. Size new pistol brass. (Usually) Trim rifle brass. (Always) Trim revolver brass. (Eventually, but test with untrimmed range brass on occasion) Never trim auto brass. (Yep, never) YMMV

Nope, you should size it and then trim it.
That's right.

[The Bushmaster]

I'm not going to bite, Walkalong...:neener:

[rcmodel]

Somebody has to ask so I will.

WHAT CALIBER brass are you talking about?

Pistol brass? Load it and shoot it.

Rifle brass? Size it and measure it.
It might need trimming, or it might not.

rc