trimming brass
- Thread starter kochie
- Start date
For the high quality brass like Lapua, Alpha, Peterson, I find they're plenty consistent and easily fit in my chambers to fire form them. I start trimming after the 1st firing. But before the first firing, I do chamfer and deburr the case mouths since it's not done at the factory.
ok thanks i will be using alpha brass
It always seems on the short side when new.
maym1
Silver $$ Contributor
are you manually chamfer/deburr or using case prep machine/henderson/giraud?
i do both i don't have a henderson or a giraud have a cheaper power one but works good.
Depends, I check the length and see if it falls withing the correct measurement. Most often it does, so I only chamfer the neck to see if it looks and feels round. This is done on all brass, regardless if it be Lapua, Nosler, etc. they all can be off some. But if any, new out of the box or fired, if it needs trimmed, it gets trimmed to recommended length, as the loading books show.
NorCalMikie
Gold $$ Contributor
Measure/check YOUR chamber length! Most reamers cut about .020 longer than MAX trim length. Don't trim UNLESS NEEDED!!
With the "proper" resizing dies, trimming won't be needed for a long time.
20 to 30 fired/resized cases and still no trimming needed.
With the "proper" resizing dies, trimming won't be needed for a long time.
20 to 30 fired/resized cases and still no trimming needed.
ok thanks good informationMeasure/check YOUR chamber length! Most reamers cut about .020 longer than MAX trim length. Don't trim UNLESS NEEDED!!
With the "proper" resizing dies, trimming won't be needed for a long time.
20 to 30 fired/resized cases and still no trimming needed.
I don't use my Giraud on virgin brass as they tend to be shorter than what I trim fired to. So, I just chamfer and deburr with my cordless tool:
ok thanks
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