trim length vs. chamber length

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Luke
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Re: trim length vs. chamber length

Post by Luke »

Been enjoying the videos.
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Re: trim length vs. chamber length

Post by 1minute »

Not gone through this exercise yet, but my plans are to load up some stretched cartridges with powder and a wax slug and fire away. Should give me a good indication of precisely where the chamber transitions occur.
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JonnyV
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Re: trim length vs. chamber length

Post by JonnyV »

Thanks Luke!

Right now, I'm of a mind to let the 10 thou gap between case mouth and chamber transition be....I use a lot of lube so I feel that my bullets will be OK, particularly since I seat them into the lands. However, I will not be trimming brass any shorter than 2.1" for this rifle, and I ordered a Giraud case trimmer to make sure I get good trim lengths too. They were also really nice on the phone and will be setting me up for 45-60, 45-70, 45-90, and 45-100 all on the same 3 way cutter head. Yeah, the trimmer is expensive, but my time is valuable too and I would like to be as efficient as possible with mundane chores.
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kenny sd
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Re: trim length vs. chamber length

Post by kenny sd »

anyone out there have a 40 70 SS Shiloh measurement? I trim at 2.497 Ken
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powderburner
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Re: trim length vs. chamber length

Post by powderburner »

Mine is 2.503
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