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Don Fischer's picture
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Fooling with a new idea

On another site awhile back I really caught t for suggesting that I find partical re-sizing a waste of my time except on belted mag cases and rimmed cases. Well got an idea from another guy on that site that suggested I try setting my FL die with a feeler guage. He'd fooled with it a bit but didn't have any thing to say about doing it. So, I went to town today and got myself a new feeler guage and am going to try setting the FL die to partial re-size with it.

I'm partial sizing some 243 cases now, waiting till I get to where they have to be FL sized again to chamber. Then I'm gonna go thru that BS job of screwing down the die till a case just fits. How in the world do you adjust a 7/8-14tpi thread down .001" at a time? With a feeler guage! From there I'm gonna use the feeler guage and try to get the shoulder set back just enough to fit the chamber right but hopefully never need to be FL sized again. That's the plan!

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Fooling with a new idea

sounds like it may be worth a try. Let us know how it goes.

Overall I've just always full length resize all my brass. That help me avoid problems in the field and keeps everything consistant.

Don Fischer's picture
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Fooling with a new idea

WH I do the same thing with cases that headspace on the shoulder. Tried it with cases that do that and getting a die just right to get the shoulder just back off the chamber is nerve racking at best. Then I usually have to FL size again after a couple shots so lose the setting on the FL die, which was obviously set wrong to begin with. And I never found that accuracy improved that much to be worth all the trouble for hunting loads.

Any way Gonna start this project in the next couple days. Will let you know.

Don Fischer's picture
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This was intresting. I found that at even .010" off the shell holder I could close the bolt on a fired case. I started down and found that the rub ended at .001"! I was not only using feel but I can see on the case head where the bolt face is rubbing. I can still close the bolt at .010" like I said but accuracy was better at .001". Maybe, in this rifle anyway, to close a fit is not good. I think that this was caused by not only a min chamber but the die would be close to min also, amazed me!

Got some 100gr SMK's for my 25-06 and gonna try the same thing in it. I do have a neck sizer for it but gonna do this with the FL sizer. Let ya know what happens.

Don Fischer's picture
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Fooling with a new idea

I've come to the conclusion that the feeler guage, while a good idea, is not the way for me to go. I don't like feeling the case rub when closing the bolt nor do I find a big saving in case life with particial sizing and accuracy increase just isn't worth the effort for what you get. Enter the rimmed and belted cases and I like particial sizing and the feeler guage should work.

My own feeling is that if you want more case life, get a neck sizer. Also I've been reading a bit about the collet dies and think I finally get their advantage. They don't have an expander plug to pull back thru the neck. That's where I find most of my case streach come's from. Gonna try one.

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Fooling with a new idea

Don;

I can't see going through the hassle of using a feeler gauge just to resize some brass. May as well go all the way. Sounds like it requires more patience than than I have. Wink

Anyway, I really like the Lee collet dies. Simple and easy. Just make sure you clean them every so often to keep the collet from getting trash in it.

Don Fischer's picture
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I think your right. On the 243 I got down to .001" befor the rub ended chambering the case. Same thing happened on the 25-06. I say befor the rub ended. I was not only feeling it to there but I could also see it on the case head where it rubbed on the bolt face.

Got a Lee collet neck sizer in the mail yesterday. I think it's working but not real sure it sizes the whole neck, must tho! Wouldn't do it at first so I took it apart and fooled with it to see what was supposed to happen, seem's alright now. Thing I really like about it now is there is no expander plug to pull thru the necks.

Don Fischer's picture
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Scratched JC.

In both my rifles I tried it in I got ndown to .001" befor the bolt shut easily with no rubbing the case head. I do use a neck sizer on my 25-06 and ordered a Lee collet neck sizer for the 243 the other day. Took three days to get here. Had one small problenn in that it wouldn't size the necks. Called Lee and cleared it up in about 2 sec. Screw down to the shell holder plus one turn. I'm using Hornady unique case lub inside the necks after I brush them. Seem's to work well. Was going to shoot some today but to much wind, maybe tomorrow.

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Fooling with a new idea

Don,

I think you will like it once you get a little time to play with it.

JJD
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Fooling with a new idea

Don,

If using the collet die, what advantage are you finding in lubing the inside of the case neck?
I was pondering that anything, even lube, allowed between the mandrel and the inside of the case neck would provide a slightly looser bullet fit. A result of the case neck not being able to contact the mandrel completely as a result of lube being between them. In a common neck sizing die, the expander plug being pulled back through the neck removes the largest portion of the lube as it is pushed out ahead of the expander plug on its way out. This allows for a constant neck I.D.regardless of amount or type of lube used. This does not happen with the collet die, as essentially. the brass neck is being pressed agaist the mandrel with nothing sliding in or out of the neck.
Don, I know that after looking at the die, you know how it works, just trying to make my question understandable to others.

In the directions that come with the Lee collet die, it explains that you can decrease the mandrel diameter by a max of .001 for a tighter bullet fit in the neck. They warn that more than .001 may cause a shoulder collapse on bullet seating. I have yet to find this neccessary, even in hotly loaded belted mag calibers.

Don Fischer's picture
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Fooling with a new idea

Hi JD,

Just getting going with it so not much experience yet. But I clean the inside of the necks first with a brush in a drill. Next I got some Hornady Unique Case lube; it seem's to be a wax. First time I wiped a small amount on the deprime rod all the way up, took the die apart. I don't know that that help's or hurt's anything as long as it's not packed on. Now I'm using a Q-tip and putting a small amount inside the necks; again I have no idea if it accomplishes anything. I am sure it doesn't hurt though as the film is likely not measureable by any tools a normal handloader might own.

The biggest advantage I'm finding is that I'm not streaching the necks as I remove the case from the die. I've loaded the same cases several times with no streach at all. Wanted to shoot yesterday but weather has been awful, worse today, lost power last night!

My 25-06 I'm doing with a regular neck size die and it does pull the necks so trimming every few shots even though I inside lube the necks. One thing I found years ago about case neck streaching is that a Q-tip with a small amount of STP on it really slows down the streaching. But the STP needs to be cleaned out very well. I used another Q-tip soaked with lighter fluid to do it. Little messy and one extra step.

Sounds like you got the set of dies? I only got the collet neck sizer for my 243, didn't come with directions. Only had to make one call to Lee and it seem's to be working fine. The zero drag coming out of the case takes some getting used to! I have a 243 bullet on the table and every now and then try to put it in a case just to be sure it's sizing!

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