Thread: Do you always need to case trim?

Greg Duley did quite a good write up on how to measure chamber length a few years back. Chamber length is different to throat length. Most chambers are longer than saami length, but how much varies from brand to brand and rifle to rifle.
Do a search on "Chamber length gauge" if you want to buy one, but they are calibre specific. When I looked for one a while back postage was way more than the gauge.