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Posted: 7/5/2015 11:39:57 PM EDT
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we are doing large quantity of prepping 223's and I was using the Hornady case cam-loc trimmer and said hell with that one night and the hand de-buring tool. I bought a Little Crow Gunworks World's Finest Trimmer 223 Remington and a RCBS trim mate.
The one thing I did not take in consideration is it cuts off the neck distance. I can see there is a small variation in the over all lengths for the case from 1.7545 - 1.7570. Is this much of a problem? Does anyone else use this? I like it for the speed compare to the other way much better. http://www.midwayusa.com/product/997722/little-crow-gunworks-worlds-finest-trimmer-223-remington |
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If you look at the top of the page in FAQ's, it will tell you how to hotlink. Your trimmer indexes off the case shoulder. So you are getting uneven shoulder set back when your sizing. That gives the variation on the trim length. Could be lube, how press is operated, die set up, or wobbly reloading bench. http://www.midwayusa.com/product/997722/little-crow-gunworks-worlds-finest-trimmer-223-remington your link made hot. Can you give more info on how you are sizing? What lube you used, and did you lube the inside of the neck? Welcome to the Reloading Forum.  |
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The wife was doing the decap / resizing. I was watching her and the cases were lubed, The bench does not flex at all. Looks like I will have to restart over on the die...
Will this brass fly on 55gr for plunker rounds till I re set up the die? Quoted:
If you look at the top of the page in FAQ's, it will tell you how to hotlink. Your trimmer indexes off the case shoulder. So you are getting uneven shoulder set back when your sizing. That gives the variation on the trim length. Could be lube, how press is operated, die set up, or wobbly reloading bench. http://www.midwayusa.com/product/997722/little-crow-gunworks-worlds-finest-trimmer-223-remington your link made hot. Can you give more info on how you are sizing? What lube you used, and did you lube the inside of the neck? Welcome to the Reloading Forum.
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Quoted:
What lube? ? [Frankford Arsenal case lube] Were the inside of the neck lubed [Not sure there. She would put them in a tub and spray and shack and start resizing] Should they be lubed inside also then tumble after? We do try to spray in the die if it feels sticky with ONE Shot Case lube If cases chamber, they can be loaded and fired. Don't expect the best accuracy. |
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A variable difference of no more than .003" might be due to nothing more than your wife having a, 'lazy hand' on the press handle. The rhythm is (1) all the way down on the handle, and all the way up on the ram to a full stop - You should feel a slight impingement between the bottom of the sizing die, and the top of the shell holder every time the ram strokes correctly. (2) Then lower the ram, at least, far enough to clear the case mouth so that you can remove the now resized case, and insert another.
Personally, I don't like to trim without using a lathe. The RCBS Case Trimming Lathe was always fast enough and precise enough for the very accurate cartridges I used to build. I've never trimmed freehand; or, at least, I've never trimmed freehand with any degree of precision; but, yes, I do see how the device you're using works. However, to my eye, the whole thing looks like it's got too much potential for free play - like, say, the .003" that you're presently getting. Me? I'd stay with the lathe. |
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Yes the inside of the neck should be lubed. When the case is drawn back over the neck expander it can create enough friction to pull the shoulder forward.
I used to use a nylon case neck brush. When I did it that way I found 1 in 3 was sufficient. Now I use Imperial dry lube and do every one. Oh, yes many, probably most of "us" give our brass at least a quick tumble to clean off case lubes. Motor |
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I was telling the wife that maybe we / she needs to double press when resizing like double clutching a truck. The second round may press easier without having to punch out the primer.
There is a good chance that some of the insides were not lubed being the fact she was throwing them in a container and spraying them down and shacking them around. We may have to go back to the tray and spray them down that way over the top again. I know I was using the hornady hand crank trimmer sizer that did cut them all the same length but was the neck the same length? May not seeing this now trimming off the neck. I was trying to keep them all at 1.7550 if I could. Wife thinks I am anal being this close on things. She just does not understand. I told her shortly we are going to have brass / bullets fitted to each of the Three 223's.. Two AR's and One Rem 700 Tactical. She is learning if she takes her time her groups are getting closer... |
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If you are not crimping (I don't crimp any bottle neck rifle ammo except for tube magazine) the trim lengths are not critical. I doubt you see any significant change in accuracy using cases that were .010" difference in trim length versus ones that were .002" difference. All MUST be at or below maximum length though for safety.
As far as sizing goes, the primer should be out already before reaching full sizing on the press. If you really want to see groups get tight for the bolt action M700 start neck only sizing for it. The 700 should make make most "run of the mill"ARs look inferior when it comes to accuracy. Motor |
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