Brass resizing question

[sirmissalot]

Is it really necessary to full length size new brass? I prefer to just neck size on just about everything. The reason I'm asking is I'm buying some new dies for a 375 ruger i picked up recently, and noticed it says new brass must be full length sized and fired before neck sizing. This makes sense to me, but wouldn't new brass be full length sized at the factory? I have several other rounds, 2 for sure, that I don't even own a full length die for and have only shot handloads out of and have never had a problem.

[h20hunter]

I alwasy full lenght size on the first reload. Then, after that, neck size only. I've had some new brass that for whatever reason seemed to be less uniform.

[high country]

It's your gun....you don't "have" to do anything, you can just shove a bullet in a new case off you push hard...but if i am burning up components and barrel life and striving for accuracy.....I start with the best I can. Brass shows up in a bag all beat to Hell and we try to get it as close to consistent as possible.....or not, depending on your needs and desires.

[JackOfAllTrades]

I alwasy full lenght size on the first reload. Then, after that, neck size only. I've had some new brass that for whatever reason seemed to be less uniform.

But, you could also test fit every piece of brass in your rifle's chamber to be sure they fit, neck size, trim, and then load them with a quantity of pistol powder and packed bismouth or cream of wheat topped by a paper wad or wax to fireform them. From then on, neck size.
 
-Steve

[sirmissalot]

Roger. Full length size it is. Thank you

[Heredoggydoggy]

New brass gets beat up just from handling, especially the case mouth.  I full-length resize new brass if for no other reason, to make sure the case neck is round.  It doesn't hurt to run them through the case trimmer, either.  You'd be surprised at how often the case trimmer bit only hits half of the mouth on a new case...