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Old September 8, 2009, 09:31 PM   #1
Darksith
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Trim to length for 30-06 casing

The max length is 2.494, but none of my books tell me the trim to legnth. Is there a standard or should I just trim to the max length?
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Old September 8, 2009, 09:40 PM   #2
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Book mark this site in your favorites
http://www.reloadbench.com/cart.html
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Old September 8, 2009, 10:04 PM   #3
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To make sure commercial cartridges always fit in commercial chambers, SAAMI always gives chamber dimensions as a minimum with the tolerance being no less than those dimensions, plus some number. To ensure cartridge fit, the opposite approach is then taken with cartridges: the maximum not-to-exceed dimension is given in the drawings with a minus tolerance. In the example of rifle cases, the maximum length is given, with a tolerance of -0.020". So the .30-06 can be anywhere from 2.474"-2.494" and be within SAAMI specs. Some shooters ignore that and shorten an additional 0.015" so they never have to trim again during the normal reloading life of the cartridge. Most commercial trimmers that are fixed, though, like the Lee, will trim right at the middle of the SAAMI tolerance: 0.010" less than maximum and more than minimum.
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Old September 8, 2009, 11:19 PM   #4
Darksith
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thanks, thats a great site. I have the sierra bullet reloading manual and the lyman 45th edition. I now see the trim to length in the lyman book, but still can't find it in the sierra
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Old September 9, 2009, 07:24 AM   #5
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Awesome site Shoney!
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Old September 9, 2009, 03:18 PM   #6
wncchester
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"I now see the trim to length in the lyman book, but still can't find it in the sierra"

That's because it really ain't critical.
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Old September 9, 2009, 06:05 PM   #7
Darksith
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another thing Ive noticed, is that I have a lee case trimmer. It only trims the casing to max length not to trim to length, has anyone else noticed this?
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Old September 9, 2009, 07:22 PM   #8
wncchester
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Yes.
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Old September 9, 2009, 10:39 PM   #9
rn22723
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On the Hodgdon web site when you hit print for load data, you get the trim to length.....http://data.hodgdon.com/cartridge_load.asp
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Old September 9, 2009, 10:40 PM   #10
rn22723
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The op needs to get better reloading manuals as the quality ones all have case specs.....
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Quote:
max length is 2.494, but none of my books tell me the trim to legnth. Is there a standard or should I just trim to the max length?
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