do i have to resize brand new brass
 

Do you have to resize brand new brass? If it makes any difference I am using winchester brass.

RE: do i have to resize brand new brass
 

I do, because I have rolled the neck in when seating the bullet. I think this has done done it to me a few times. I resize new brass to be safe.

RE: do i have to resize brand new brass
 

I do as well.I back the die seveal turns away from the shell holder as not to
set the shoulder back and run the expander ball through the mouth of the case.

RE: do i have to resize brand new brass
 

I also just make sure the case mouth is round, but do not resize the case. Good luck.

RE: do i have to resize brand new brass
 

I always resize new brass.

RE: do i have to resize brand new brass
 

I do too

RE: do i have to resize brand new brass
 

Yes.
I tried to cut corners once and primed 100 new cases only to find out while charging powder, that 1/2 of them had necks that were out-of-round[:@]

RE: do i have to resize brand new brass
 

Lapua (maybe RWS too) is pretty much the only brass I've used that didn't require sizing before using it for the first time.

RE: do i have to resize brand new brass
 

yes this is what i do also, many of my new brass i get, have horrible necks on them. this process of turning the sizing die up a turn or two is called partial full length?? I believe thats what bigcountry told me.

RE: do i have to resize brand new brass
 

If you don't resize at least the cheaper brass like remington and winchester, the necks are very tight and when you seat the bullet, this can knock you neck out and cause the copper to peel if not deburred real good.

RE: do i have to resize brand new brass
 

neck size the case and set the shoulder back .001(thousands) should do it. I use a stoney point case gauge when doing this.

RE: do i have to resize brand new brass
 

New brass HAS to be chamfered, the same as once fired brass. Otherwise the bullet will be damaged, AND the neck can be knocked crooked by excessive force used to get by the square mouth of the case. Chamfering out of round case necks, causes excess chamfering in one spot and none on another, resulting in the same bullet damage/ excessive force required.

I simply run each case fully into the FL sizer. Seldom do I need any lube, the cases are at SAMMI minimum so they don't really contact the die anyway. This rounds out the mouth of the case so you get a uniform chamfer to ease the bullet into the case.

RE: do i have to resize brand new brass
 

Up until I recently I've always procured rifle brass by firing factory Winchester ammo. This, of course, fireforms the brass to the chamber in question, and from there I just neck size it.

But recently I did buy a lot of new unprimed Remington 7mm STW brass, and found that they did need to be sized for no other reason than the necks were anything but round (apparently new brass isn't handled with any type of care as some of the necks were really dinged up). I ran them through a FL sizer and found that the die barily touched the case other than the neck, so in this case FL sizing wasn't necessary. The primary purpose was to get the necks back into round so I could trim, camfer and deburr them.

Mike

RE: do i have to resize brand new brass
 

A while back I experenced the same scenario as Driftrider with R-P brass, so I spoke to a R-P Tech., and he told me new Remington brass does not have to be sized they have been sized at the factory, but the case mouth may have to be trued. :) Good luck.

RE: do i have to resize brand new brass
 

I am a full believer you get cheap seconds or flaws when you guy remington brass. Reason I say, I looked over the last 200 pieces from remington and they were so dinged and the the neck runout was so bad. But I then measured the neck runout of some 50 pieces of 270win and 30-06 factory Corelokts and the runout wasn't near as bad, and I didn't see any dings. Also looked at neck thickness of fired factorys and new brass. Big difference. And this acid wash they use on the necks is getting worse and worse.

RE: do i have to resize brand new brass
 

I resize new brass if for no other reason, then to make sure you have good, uniform tension between the bullet and the case neck...

RE: do i have to resize brand new brass
 

Bigcountry:

I also asked the R-P Tech. why the brass is sometimes is dented and the mouths are out of round. He told me because after the brass is anneald from the shoulder up and sized it is placed in large tumblers and the brass dent each other. Good luck.

RE: do i have to resize brand new brass
 

Seems to me it'd make more sense to anneal, then tumble and size last.

Mike

RE: do i have to resize brand new brass
 

Seconds on brass isn't right. I've bought some bad and good RP brass. Its been luck of the draw. Just like factory ammo. But its not seconds at all.

You've been told why the necks are dinged. And there is no acid wash. Thats annealing marks. If you tumbling long enough they'll go away but you'd have to pay RP extra to do that. Why worry? Annealing is good for the brass.

So much mis/dis- information floating around.

Jeff

RE: do i have to resize brand new brass
 

test

RE: do i have to resize brand new brass
 

Easy killer. First off, unless you know, then you don't know. Second, unless you work at the factory, your full of it as I am and are either guessing cause its the only thing you use, and you feel insecure. Third, I said I believe. And have made my case why I believe out of the 1000's of pieces I have worked with. Read my post again.

No misinformation here, just posting "I believe" and why "I believe". That is what these forums are for "I thought".

RE: do i have to resize brand new brass
 

New R-P brass is the stuff that had the necks out-of-round in the case where my first post on this thread was. It must be even more common of a problem than I thought by the responses here.

RE: do i have to resize brand new brass
 

Briman, it used to not be that way. And some 270win stuff I buy isn't that way now. Just noticed it alot more with 300RUM where its really the only gave in town.

RE: do i have to resize brand new brass
 

Big

I dont' work for RP. I have shot all types of brass brand wise. Though I have not shot quite that much last year, I average about 8000 rounds loaded and fired each year. Thats just in competition. Not in hunting ammo. Each brand comes with dinged necks at times. One factor is how much its annealed( IE how soft it actually is) the other is how long its tumbled and how much is in each tumbling batch. Though normally the time and amount are run at the same factor each time.

The misinformation I was speaking of is the notion that the discoloration you see on the neck/shoulder area and down into the body is acid wash. Thats the result of the metualurgy changing as a direct result of the annealing.

I shoot what brass works at a given time is why I know a bit about all this. Some of the most consistent brass I've ever found in 223 is RP nickel. Exacly what I did not expect to find. Yet in other calibers the RP sucks horribly. And there are all kinds of variations in between. Want to see something that'll really toast ya? Try buying a case of 223 from PMC since another match shooter had such good luck with them. I think the count was right at 5000 cases. Open the box and find that about half the flash holes are off center quite a bit. Almost to the edge of the pocket. A call to my buddy and he had the same batch but they were so accurate. I doubted him but loaded some up. Set 3 range records with that screwy looking brass. I've seen just about all. Including cases that came with a primer pocket but no flash hole.... And have seen that exact thing in factory ammo. Makes a mess when the primer pops and has no where to go except into the bolt face and firing pin hole....

What I speak of is not of a mere few hundred rounds of this or that here and there.

Does that make more sense maybe?

Jeff

RE: do i have to resize brand new brass
 

Not really rost. What you will find here is lots and lots of people who shoot alot. So don't feel pregnant.

RE: do i have to resize brand new brass
 

I resize all new brass just because that's how I was tought from a "old-timer" who showed me the ropes...;)

RE: do i have to resize brand new brass
 

Big

Okee Dokee. I'll clam up. I figured since I loaded over 25,000 rounds of ammo a year I would know a thing or two. Since my wife and I burn up appx 14-15k a year and I load a bunch of team ammo for our team practices and the nationals I figured we knew a bit here and there.

Ya'll do what ya'll feel is right. I'm out.

Jeff

RE: do i have to resize brand new brass
 

I do, I dont see the use in taking the time to reload and fuss over your primers, powder loads, bullets ect.... if you aren't going to resize so that you know EXACTLY your case dimensions. Just my thoughts.

RE: do i have to resize brand new brass
 

I always run the bell through the mouth to be sure that it is round. I also check the case length since I have a couple of tight chambers.

RE: do i have to resize brand new brass
 

YEP

RE: do i have to resize brand new brass
 

To be fair, I just bought 100 pieces of Winchester 284 Win brass and many of the necks were dinged up.

RE: do i have to resize brand new brass
 

I full-length resize all new cases, whether I purchased R-P, Winchester or Federals. After resizing, I measure them with a caliper, and if any are quite a bit longer than the average, I trim them. I prefer all my cases to be the same length at the start, so they remain relatively uniform over the life of the case. I then chamfer and deburr all the cases. Again, uniformity. Now, I only handload for rifles, and hunting loads at that, so I normally do not load more than forty cartridges at a sitting, so this process is not that tedious. If I was reloading varmint or pistol/revolver cartridges in batches of hundreds, I might feel differently.

Although all the new cases I have purchased (.30-06, 7mm Rem Mag, .30-30 Win, .338 Win Mag) have been well-manufactured, they do get a little beat up during shipping and handling. Case dents, as long as they are small, do not concern me. Out-of-round necks do, which is why full-length resizing new cases makes sense to me. You are not going to rework the case much, since they come "full-length" from the factory. You are merely trueing them up before priming, charging with powder and seating a bullet.

Brian

RE: do i have to resize brand new brass
 

Yes,vangunsmith

RE: do i have to resize brand new brass
 

Midway states in their catalog to full lenght resize, trim, and chamfer before using new brass. In the rifle section not sure about pistol .... I usually check and see if it will hold the bullet and if it's the right lenght (pistol)

RE: do i have to resize brand new brass
 

I have always had a few cases with dented case mouths so I always run them thru the fl die if for nothing more than to maintain consistency. If one is dinged and will be run thru the die I will run all of them thru the die and then chamfer. Never have had to use lube, account cases are all ready to spec.

RE: do i have to resize brand new brass
 

I always do! Just to Know it is done right. If you wont something done right do it your self..

RE: do i have to resize brand new brass
 

I too always FL resize new brass. For the aforementioned reasons of caved in mouths, etc. The last 2 batches of 35 Whelen RP brass i've gotten have been pretty terrible.. no way you could even begin to seat a bullet in many of them.

on new brass, after i FL resize i also trim, chamfer the mouth, true the flashhole, chamfer it and true the primer pocket... this is the only time i do all of this. From this point on i neck size only and i'll check to see if the mouth is still square after fireforming. other than that it's just check from time to time to see if they've stretched too far and need trimming again.

Reason i do the primer pocket is from the fact that what i thought was excessive pressure turned out to be a primer pocket situation where they were not formed deep enough... the primer was actually flush to slightly protruding above the rim face.

i've also noticed with the 35 WHelen brass a significant amount of runout and perpendicularity... meaning the neck is not true to the C/L of the case and the rim face is not square to the C/L of the case... some are so bad that you can't even get the case trimmer pilot in the mouth...

Fireformed with a good load and they are about as true as you can get them eventhough they "suck" out of the bag...

On another note the 280 rem nickel brass i shoot is pretty danged peachy right out of the bag...

JMHO

Jamie

RE: do i have to resize brand new brass
 

Hello TEX,

Yes, I always do just to be sure everything is right!


KEEP ON ROOTING!!!

RE: do i have to resize brand new brass
 

YES, vangunsmith