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Posted: 3/4/2009 8:49:21 AM EDT
| I am reloading new Winchester unfired bass it measures 1.842 the book says 1.850 and they got trimmed to1.840 so my ? is because I trimmed them to 1.840 are the no good and in the book the1.850 is that as short as a case can be and the info came from nosler #6 book would like some help thanks |
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I always resize new brass. Be sure to clean off the case lube.
Sizing ensures the neck dents will be gone, and the neck tension will be correct. Also case will chamber in my rifle. Once resized, then I trim to "trim to length". Sometimes cases are a little short and I just trim enough to square up the case mouth. Next I debur case mouth inside and outside. So are your case necks dented? How is the neck tension? To check try to seat a bullet by hand in the case. Should not enter case, bullet should be a press fit. With a fired case, a bullet should drop into the case. To answer your question, you can load your brass. Chances are that after they are fired and sized, they will be slightly over "trim to length". Welcome to Arfcom and the Reloading forum. 
Good luck. |
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I took the question as: 'Is it bad to use rifle (bottleneck) brass trimmed shorter than the trim-to length?' In general no, especially if you don't consistently trim them short. I've seen discussion that revolved around long term use of shorter-than-spec brass. One case you often hear about is .270 Win brass, formed from .30-06 brass. (.270 Win is a bit longer cartridge, per the spec, and this reforming has a few downsides, both with overall length that results, and neck thickness.) Over the long haul, it is reported that in extreme cases, the chamber erodes just ahead of the neck, where the chamber is cut to allow room for the longer 'in-spec' neck. In those cases, the neck can flare into the erosion, making extraction more difficult. ("Gunsmithing" by Dunlap covers this in discussion of the .270 Win cartridge.) I would figure that this is an extreme case. As a rule, you don't want to exceed max case length, for pressures will rise, but a long neck is desireable. Hope this helps... |
| thanks for the help I was reading through all my reloading books and couldn't find the answer I was looking for from what I was reading it sounded like if it wasn't this measurement you could not use it used to do some reloading before I joined the marines I was wounded in 2004 I sustained a traumatic brain injury from a rpg I lost alot of my memories the doctors said I would never get to do stuff I did before like walk spell do math well got out of my wheel chair two years ago still working on the math and spelling and reloading so I will probley be on the form alot it's nice to find people to take the time to explain things thank you |
if you live close I would be surprised
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Quoted:
thanks for the help I was reading through all my reloading books and couldn't find the answer I was looking for from what I was reading it sounded like if it wasn't this measurement you could not use it used to do some reloading before I joined the marines I was wounded in 2004 I sustained a traumatic brain injury from a rpg I lost alot of my memories the doctors said I would never get to do stuff I did before like walk spell do math well got out of my wheel chair two years ago still working on the math and spelling and reloading so I will probley be on the form alot it's nice to find people to take the time to explain things thank you Thank you for your service Sir. Any help you need, you just ask.
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