Should I FL Resize My New Factory Brass
- Thread starter waynewjw
- Start date
Not by FL resizing. Run the necks over an expander ball or mandrel
- Location
- Western Manitoba
Perhaps is "splitting hairs" - if your Full Length sizer is doing much to a new unfired case body, (other than making the case mouth / neck to be "round") then either that brass or that die is not made correctly.
- Location
- Western Manitoba
How does one create "headspace issues" by full length sizing brass - is several rifles here, and perhaps 5 or 6 sets of steel gauges for checking "headspace" in the chamber - I hope none of my sizing dies get the brass cases "too small" for the chamber - is what SAAMI specs were supposed to be about - a Min and Max spec for chamber, then all brass made within that spec. Or has something changed?
How does that work? Earlier, you said the die won't touch the body... which in most cases it won't, but I have run into enough out of spec cases to still want to check them all full length, while rounding and standardizing the necks.
Function testing empty new brass is a waste of time.
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- Location
- Western Manitoba
I am of two minds about that - when I am reforming 8x57 brass into 9.3x57 brass - I want to create a "false shoulder" for fire-forming, and most definitely do try the empty cases in the rifle in order to get the die set for "shoulder to bolt face" contact.
On other hand - as a kid - was like a "ritual" to go deer hunting - cheap rifles, cheapest ammo - run the loaded rounds one by one through the rifle - enough instances of rounds that did not fit or chamber - maybe dirty, bent or whatever - absolutely no point to carry those on you when they will not fit into the rifle of the day.
On other hand - as a kid - was like a "ritual" to go deer hunting - cheap rifles, cheapest ammo - run the loaded rounds one by one through the rifle - enough instances of rounds that did not fit or chamber - maybe dirty, bent or whatever - absolutely no point to carry those on you when they will not fit into the rifle of the day.
I don't see where you said that, seemed like you were saying something else. But anyway, pointless to check new brass for dependable function. I've never seen new brass that wouldn't chamber, in a factory rifle, except for some dinged case mouths. So I adjust my FL sizer to only neck size on new brass and nothing more. Loaded cartridges used for hunting will be checked for function but not new unloaded cases.
Yes, and also a good idea to function test new brass if it's been run over by a gravel truck.
But I'm going to go out on a limb and say in my experience new, unmolested factory brass usually chambers as is, except for some dings in the case mouth. And IME new factory brass is almost universally undersized, and i won't need to bump shoulder back until it has been fireformed. This for factory chambered rifles and factory new brass.
How does it work? You can run a die down far enough to hit the shoulder. Just because you are hitting the shoulder doesn’t mean you are sizing the body of the case. I really have no idea why someone would feel the need to run new brass through a FL sizing die.
If you new brass is all within spec why are you running it into a FL sizing die?
New case.
Fired case.
Sized case set to die instructions. Do this three times and you will have problems. Why start early? I also have die’s that if set this way would bump the shoulder over twice that much. But I wasn’t changing my die settings for the purpose of this thread.
Fired case.
Sized case set to die instructions. Do this three times and you will have problems. Why start early? I also have die’s that if set this way would bump the shoulder over twice that much. But I wasn’t changing my die settings for the purpose of this thread.
I am primarily standardizing the necks but run it down short of bumping the shoulder... because why not? If you do that enough the die will find "out of spec" cases that you were unaware of by simply eyeballing... am I just unlucky? Cuz I have run into that several times... it takes no longer to do this that just necksizing... I suppose it is possible that swinging your arm an extra 12" could be exhausting for some.
waynewjw
CGN Regular
Had time today to chamber about 30 or so cases before I start reloading them, they all fit as they should. But I did notice that doing the 1/8” gap with the die to round out the case mouth they are now setback 1-10,000” from the factory cases before I placed in the die. Only checked half a dozen but they were all exactly the same. I hope to have the time this week to prime and start to develop a load.
