Thread: Do you always need to case trim?

Originally Posted by 10-Ring

I use Sinclair chamber length gauges, have for over thirty years. They're inexpensive and give an accurate reading. You'll need calipers though.

https://www.youtube.com/watch?v=JKnXJxaAw2U

+1 Ditto, and the reamer drawings. Have 5 of them. Made the last one myself out of brass though rather than go to Sinclairs - I had nothing else I wanted off them at the time and the shipping would have been shit.