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Case length trimming

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Old 02-22-2007, 09:08 PM
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Join Date: Jul 2006
Posts: 536
Re: Case length trimming

Try the Giraud case trimmer. Its the cats *****!

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Old 02-23-2007, 01:41 PM
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Join Date: Dec 2006
Location: Dogpatch, NY
Posts: 698
Re: Case length trimming

Yes, my Forster turns the cutter. Sorry.
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Old 02-23-2007, 04:07 PM
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Join Date: Feb 2004
Location: Pennsyltucky
Posts: 2,625
Re: Case length trimming

i've used the RCBS and Wilson trimmers but since i've started using the lee trimming system,i like it much better than any of the others.it is simpler,more consistent,more accurate, and cheaper than the others.it amazes me that more people don't use the Lee trimmer.
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Old 02-23-2007, 07:06 PM
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Join Date: Jan 2007
Location: North Idaho
Posts: 670
Re: Case length trimming

I use the new redding 2400 with the micrometer on it and all I have to say is: Holy Cow!! This thing is awesome. You don't need any shellholders and it's the most accurate cut I have seen.
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Old 02-24-2007, 12:31 AM
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Join Date: Jul 2005
Location: South Africa
Posts: 47
Re: Case length trimming

I used a Lyman case trimmer, which uses a shell holder into which the case is put, a screw then pushes the case rim against the shell holder and locks it down. The problem with this system is that the rim wall thickness is not always that consistent, and varying thickness rims lead to varying case lengths.I now use a Lee trimmer, which cuts at one length only. How do other systems overcome this problem of varying rim thickness?
You're NEVER too old to have a happy childhood!!
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Old 02-24-2007, 11:56 AM
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Join Date: May 2001
Posts: 920
Re: Case length trimming

How do other systems overcome this problem of varying rim thickness?

[/ QUOTE ]

Most systems don't control this "perfectly"... the Forster has a tapered collet, and the distance that it travels to hold the case, determines the case AOL, so the same problem (??) occurs, a smaller rim dia means a shorter case (by the same amount).

I bought the RCBS trimmers (manual and electric) because the holder draws the case back against a fixed stop, and it looked good in theory, but the trimmers were so poorly made that I threw them in the trash after using them for less than a year. I went back to the Forsters (I now have three).

I'm not so sure that the concern of case length differences of +/- a few thou is meaningful (except to an anal compulsive retentive).

Here, kitty kitty kitty.

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Old 02-24-2007, 01:34 PM
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Join Date: Jan 2006
Location: Nebraska
Posts: 507
Re: Case length trimming

The trimmer I use most is a Lyman Universal case trimmer.
It has spring loaded jaws that you snap the case rim groove into, you rotate it and the jaws grab the rim and pull the case head back against a stop so trim length is consistant, as it is indexed off the head of the case instead of the front of the rim.
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