gifbohane
Member
- Joined
- Nov 7, 2016
- Messages
- 1,185
Guys
I just bought a manual cartridge trimmer to trim 223. I set it up to trim to 1.750. The first few carts are fine then the rest trim shorter and shorter. I wind up grinding them a low as 1.744. I tried once to keep going on an older cartridge and it ground down to below 1.732 when I quit grinding. I have a theory that the brass trimmings left on the teeth of the trimmer head (and there are a lot) are altering the results. Sometimes I can only trim to 1.752 and I have to change the setting. Then the next one is too short at 1.748. I have gotten to the point of ball parking the time spent trimming on each case to get to the desired trim length. Any thoughts on my problem?
Also is a variation from 1.744 to 1.755 acceptable?
I just bought a manual cartridge trimmer to trim 223. I set it up to trim to 1.750. The first few carts are fine then the rest trim shorter and shorter. I wind up grinding them a low as 1.744. I tried once to keep going on an older cartridge and it ground down to below 1.732 when I quit grinding. I have a theory that the brass trimmings left on the teeth of the trimmer head (and there are a lot) are altering the results. Sometimes I can only trim to 1.752 and I have to change the setting. Then the next one is too short at 1.748. I have gotten to the point of ball parking the time spent trimming on each case to get to the desired trim length. Any thoughts on my problem?
Also is a variation from 1.744 to 1.755 acceptable?