Hi
why should one reseize a new case? i have loaded plent of rounds in new unfired cases and never resiezed them why it would be needed?
regards
Yazid E Sahrawi

Needed or not I do it.....there is at least the necessity to round up the necks as they're usually badly dented.

definitely to iron out the necks and also to insure case consistency.

I always run new cases through the re-sizing die. I just bought new Winchester brass in the following calibers: 7mmRemMag, 30/06, 300WSM, and 375H&H. There were quite a few cases that had dents in the necks and I actually had to throw away 2 of the 375H&H cases.

Yes, to iron out the necks.

Seems like everyone has the same idea, it helps even up the neck area.

Steve E.......

i do not flrs new brass for 243win , IF they will chamber in the rifle. If the case mouth is bent , i bump mouth with the expander button just a tiny amount so i can start bullet on seating

My technique is similar to yours, 243WinXB. But I run the expander ball completely through and adjust the sizing die to size most of the neck without bumping back the shoulder.

Whether this is necessary or not...... I don't know. But it makes me feel better because I think it MAY help achieve better uniformity in bullet pull.

quote:

Originally posted by yes:
Hi
why should one reseize a new case? i have loaded plent of rounds in new unfired cases and never resiezed them why it would be needed?
regards
Yazid E Sahrawi

Yazid;

I have always resized them because there can be necks that out of round or something from them getting banged around in transit or packaging...

If nothing else, I at least neck size them prior to reloading new brass... the higher quality of manufacture, probably the less you have to worry about it.. however, Winchester, Remington and Lake City brass, I always at least neck size...

the only other one I have used new, locally, was PMC.. I don't use PMC brass, New, Used or otherwise....It is just junk.. as is Sellier and Belloit... to me also...

cheers
seafire

if you are going to run a load ladder anyway,.it only makes sense to size all the cases to uniform the necks and external dimensions of the cases. Not to mention I always find a bunch or squared off necks that need rounding out.

quote:

Originally posted by DaMan:
My technique is similar to yours, 243WinXB. But I run the expander ball completely through and adjust the sizing die to size most of the neck without bumping back the shoulder.

Whether this is necessary or not...... I don't know. But it makes me feel better because I think it MAY help achieve better uniformity in bullet pull.

I also do pretty much the same thing depending on what caliber and gun I am reloading.
For my Savage 99, I flrs all new cases. For my ‘03-A3 (6mm) I do the same as DaMan.

What I find amazing is the difference in length of new brass. Some are .005†under minimum length. I usually end up trimming to bottom of spec just to make them all kind of uniform. Anybody else find this with new brass?

(Winchester and Remington are pretty much all I use)

I neck size, trim to length, & chamfer.

Out of every bag of new unprimed or primed brass many of the necks are either dented or out of round in some way.

Decided to take a shortcut and not resize some new 45 brass. You know, straight walled case, I prebelled the mouth anyway, all that sort of reasoning... After maticuously measuring out powder into 50 of them...I found that the bullet just fell INTO the case when I attempted to seat it.
Accuracy is a matter of uniformity as much if not more than component selection. Sizing new cases (unless I intend to only fireform them) assures their uniformity.

I Do NOT bother with rifle cases. I use a hornady die with eliptical expander or a lyman-m-die and just do the case mouth. The lyman m-die is cheap and does a great job of getting the wrinkles out of the case mouth. I've found that I still get excellent runnout by just doing the above as most factory ammo is actually quite straight according to my runnout gauge.