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Thread: FL size or Neck size for precision loads

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    FL size or Neck size for precision loads



    This is my first long range precision rifle. I've been a re loader for around 5 years now, but this is a new game. I have one question that I hope the members will be able to answer. I am loading the brass for this rifle only, so knowing this... Full length or neck size the brass to be loaded? Thank you for your comments.

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    All depends on who you ask
    "And you shall know the truth, and the truth shall make you free.” John 8:32 (New King James Version)

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    I know, that's what I'm running into. One says it only needs neck sized and the other says FL for consistency.

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    That debate will go on forever

    I have done it all. Neck size with a bushing, neck size with a collet die and use a body die and full length resizing. All methods can create competition grade ammo. I do recommend dies made by forster or redding for.commercial dies.

    What I have found is I don't like donuts and if you are going to have to full length resize every 3 to 5.firings anyway why bother with neck sizing.

    With a commercial full length resizing die die setup is very important. I use a Hornady headspace gauge to measure the headspace of my fired brass. Then I set the die up for a 1 to 2 thousands shoulder bump. Plenty of utube videos on how to do this.

    For the ultimate full length sizing die you need a custom die made from your fired brass. Neil Jones and John Whidden are good sources.

  5. #5
    SidecarFlip
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    End the debate simply... Fire 4 rounds sized with any applicable die and send the 4 (fired and not resized) cases to a reputable die builder such as John Whidden or RCBS and have them machine you a die based on your case dimensions. Problem solved. Keep in mind that the die will be specifically tailored for that particular chamber (and no other) but you state that 'for this rifle only', exactly what I do.

    Every precision shooter I own has it's own die. Expensive? absolutely. The end result is well worth the initial expense.

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    Basic Member Steelhead's Avatar
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    I neck size with a lee collet 3 times then anneal and bump shoulder back with body die and repeat.

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    Quote Originally Posted by Steelhead View Post
    I neck size with a lee collet 3 times then anneal and bump shoulder back with body die and repeat.
    Me too.

  8. #8
    SidecarFlip
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    Quote Originally Posted by Steelhead View Post
    I neck size with a lee collet 3 times then anneal and bump shoulder back with body die and repeat.
    Not trying to start an argument but I've found Lee dies to be on the low end of quality. Having said that I do use them for straightwall pistol brass sizing but that is all I used them for. I absolutely despise the Lee lock rings. Those go in the wastebasket right away. I replace them all with Hornady cross lock rings. In fact, every die I own (Whidden included) gets Hornady rings....

    I do like and use Lee Collet Crimp dies. The rest are marginal in my opinion. You get what you pay for in any product, die sets included.

    Never used the Lee Dipper. I guess you could use it for a cocaine scoop but in as much as I don't do drugs, it just sits in the die box, taking up room....lol

    Lee die sets ate low end, beginner dies for hand loaders starting out. Much more precise and of course more expensive reloading dies out there in cyberland.

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    Thank you for your comments, I will be looking into a custom set of dies.

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    Quote Originally Posted by kd8cmn View Post
    Thank you for your comments, I will be looking into a custom set of dies.
    Make sure the fired.brass you send in has been fired at least.3 times and don't resize the last time. You want.to be sure the brass is fully fire formed to your chamber. One firing does not.always do it.

    I am sure whoever you get the custom dies from will give you the procedure.they want you to follow.

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    Quote Originally Posted by kd8cmn View Post

    This is my first long range precision rifle. I've been a re loader for around 5 years now, but this is a new game. I have one question that I hope the members will be able to answer. I am loading the brass for this rifle only, so knowing this... Full length or neck size the brass to be loaded? Thank you for your comments.
    Please explain/define (long range precision). Because frankly, I didn't know (precision) was possible at long range.
    So if we shoot an 8" 1000 yd group today, and tomorrow a 20" group, would better dies help the cause?
    Fact is any off the shelf die would be capable of loading ammo better than the vast majority of shooters can shoot at long range.
    And, any rifle/shooter combination capable of 1" 100 yd groups from a bench, will also be capable of hitting gallon size milk jugs at 1000 yds.
    Wind of coarse can vary results, as it does regardless of how the ammo was loaded. But that's the shooting part, not the loading part.
    I guess the question becomes is that precision? Or precision enough? Maybe not, at least for some, but it would put a smile on most faces.
    If you cant get to the point of doing that, be looking for reasons other than just the dies you load with.
    Id personaly recommend just using standard dies and then go shoot. You might just find they are precision enough.

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    Understand the concept of John Whidden dies and dies made from the same reamer the chamber was done with. My BIL does all that and anything else you can imagine.

    But will someone please explain to Me why My cases fire formed in My chamber and neck sized with a LEE Collet Die are less precise than than full length sizing. MY PRECISION DIE is MY RIFLES CHAMBER :-).

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    Team Savage 243LPR's Avatar
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    ^^^
    This! And almost 0 runout to boot.
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    "...shall not be infringed" What's the confusion?

  14. #14
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    Quote Originally Posted by SidecarFlip View Post
    Not trying to start an argument but I've found Lee dies to be on the low end of quality. Having said that I do use them for straightwall pistol brass sizing but that is all I used them for. I absolutely despise the Lee lock rings. Those go in the wastebasket right away. I replace them all with Hornady cross lock rings. In fact, every die I own (Whidden included) gets Hornady rings....

    I do like and use Lee Collet Crimp dies. The rest are marginal in my opinion. You get what you pay for in any product, die sets included.

    Never used the Lee Dipper. I guess you could use it for a cocaine scoop but in as much as I don't do drugs, it just sits in the die box, taking up room....lol

    Lee die sets ate low end, beginner dies for hand loaders starting out. Much more precise and of course more expensive reloading dies out there in cyberland.
    I'm sorry, but I'm afraid I have to disagree with this. Yeah, Lee dies are inexpensive, and yeah, the lock rings suck rocks and need to be replaced. No argument there at all.

    But right now, I'm loading for six Savage rifles in 7mm-08 (mine, my wife's, a spare, and one each for the three granddaughters, aka The Senior Minions) and I'm loading them with Lee dies mounted on a Dillon RL-550B, which anyone will tell you is not for precision work. Every one of those rifles will deliver sub-MOA groups out to 200 yards with disgusting regularity. To date, I've probably loaded 3000 rounds with these dies over the last four years or so. No issues, no problems, and no complaints. Now, I don't know if the accuracy is because of the rifles, the exquisite care taken in assembling the loads, the skill of the shooters (three of them teenage girls), divine intervention, or plain old luck, but I'll take it!

    Granted, most of our non-paper targets are deer and hogs, inside of 250 yards, and that probably doesn't qualify as "precision" work. But we're all pretty happy with the results, nonetheless.

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    Basic Member Robinhood's Avatar
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    Hehe, I have "tuned" some Lee dies to deliver the goods in F TR. I have since moved on but It was because I thought I needed to. Waste of money.
    The Dunning-Kruger effect is alive and well.

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    Team Savage 243LPR's Avatar
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    "Precision" means different things to different people.
    "An armed society is a polite society"
    "...shall not be infringed" What's the confusion?

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    SidecarFlip
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    Quote Originally Posted by 243LPR View Post
    "Precision" means different things to different people.
    That is an all encompassing statement if there ever was one...

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    Quote Originally Posted by FW Conch View Post
    Understand the concept of John Whidden dies and dies made from the same reamer the chamber was done with. My BIL does all that and anything else you can imagine.

    But will someone please explain to Me why My cases fire formed in My chamber and neck sized with a LEE Collet Die are less precise than than full length sizing. MY PRECISION DIE is MY RIFLES CHAMBER :-).
    As I have said earlier all these methods can produce competition level ammo

    I too used the Lee collet neck sizer. I like it better than a bushing die because it.doesn't produce donuts.

    Custom dies are not.made with the chamber reamer used on the rifle. The fired brass is measured and the.die.body is.machined from those measurements. Using the chamber reamer would.make.the die too tight. The brass would not chamber.

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    Quote Originally Posted by 243LPR View Post
    "Precision" means different things to different people.
    I thought having to measure groups with calipers was precision, measuring with a carpenters tape not so much.
    But to put that in perspective, think of this. The first (recognized) record group shot at the oldest on earth 1000 yd benchrest club was about 7 3/4" for the 10 shots about 45 years ago.
    The record group today is about 5" smaller than that one.
    So its taken thousands of good shooters shooting hundreds of thousands of record rounds with the best possible equiptment to accomplish that.
    And the group can still be measured with a carpenters tape in inches and fractions of inches.
    The idea of a custom die using the same reamer that cut the chamber originated a long time before John Widden. Many of those shooters used them and still do.
    Have you ever sat and watched a cat chase it's own tail? lol

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    FL size or Neck size for precision loads

    Neck size once you have fire-formed the brass to your chamber. Fire and repeat. Depending on brass, anneal as needed. As in posts #6 and #7.

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    Team Savage wbm's Avatar
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    Have you ever sat and watched a cat chase it's own tail?
    Lol. Yep. Never knew if the cat was trying to catch up or catch on.
    Last edited by wbm; 10-07-2016 at 11:59 AM.

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    I do not think you need custom dies. The answer I like is to size every case full-length and partial neck-size. I use the Redding body/shoulder bump die for those parts of the case. Then size the entire neck with a Redding bushing die that is too large to hold a bullet, but large enough to provide plenty of clearance for the neck in the chamber of the rifle. Then size the 0.15" at the case neck using a smaller bushing which holds the bullet tight enough but not too tight. That should be the best of both worlds. Also, there is less wear on the cases. I only do this for single-loaded rounds. Maybe the bullet would unseat during firing if bullets only have light pressure for 0.15" holding them in the case. I've never experimented to see if that happens, so I don't know. Almost everything I have shoots under 0.5" for 5 shots at 100 yards, and I have shot a 4-shot group of 0.022" at 100 yards using this method, and using random Lake City milsurp .308 Win (7.62x51) cases.

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    Whatever works for you!

  24. #24
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    Quote Originally Posted by First Shirt View Post
    I'm sorry, but I'm afraid I have to disagree with this. Yeah, Lee dies are inexpensive, and yeah, the lock rings suck rocks and need to be replaced. No argument there at all.

    But right now, I'm loading for six Savage rifles in 7mm-08 (mine, my wife's, a spare, and one each for the three granddaughters, aka The Senior Minions) and I'm loading them with Lee dies mounted on a Dillon RL-550B, which anyone will tell you is not for precision work. Every one of those rifles will deliver sub-MOA groups out to 200 yards with disgusting regularity. To date, I've probably loaded 3000 rounds with these dies over the last four years or so. No issues, no problems, and no complaints. Now, I don't know if the accuracy is because of the rifles, the exquisite care taken in assembling the loads, the skill of the shooters (three of them teenage girls), divine intervention, or plain old luck, but I'll take it!

    Granted, most of our non-paper targets are deer and hogs, inside of 250 yards, and that probably doesn't qualify as "precision" work. But we're all pretty happy with the results, nonetheless.
    Your like me. I'm ok with 500-600 Max. Because I'm a Hunter and I don't like to shoot over 300 truth be told. But those guys are on a concrete bench shooting 1,000 yards at paper targets and have 15 pound rifles with 3,000$ scopes . Its a different ball game. I use Lee dies for a few rifles I even have a Lee press And I love it. But I'm good shooting 1" at 200. I don't need 1/4" at 200 or to make 1,000 yard shots. If I did I would buy the best also. I bow hunt mostly for deer unless I'm filling the meat locker and I shoot a rifle. But I'm like that with my archery gear. Heck my bow cost as much as a good used Harley. Do I need it no I killed lots of deer with a 150$ bear ,But I like knowing if I miss its completely my fault. When your in a sport where 1" at a half of mile means winner or second best. It makes a difference. Those guys could still probably shoot just as well useing Lee dies but it's the piece of mind knowing you left nothing to a what if?

  25. #25
    Basic Member Steelhead's Avatar
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    I'm a big fan of the Lee collet die.
    That, a body die and a good bullet seater(latter two from Forster or Redding) and you can make some really good ammo at a decent price.
    I do want tiny 200 yard groups and do a lot of shooting at 1000 and beyond.

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