I’ve used the EBay trimmers. Mine are the finger guard-less version. The 20 and 12 gauge were very tight inside the hull. I took about .010 off them on my metal lathe. They worked well and I found an X-acto blade which quickly trimmed down to replace a worn out blade. I used my 12 version to trim 5,000 Fiocchi hulls to 67mm and the 20 gauge version to trim 3,000 Remington hulls to 67mm. After this all my low pressure, short chambered loads will go into these two basic hulls. One wad supply for each, one powder for each about as simple as possible for safe, economical loads for my needs.
I think the seller ought to sell packs of new trimmed blades in packs of ten and turn the main shaft about .1mm smaller. On soft hulls they work as is but on stiffer side walled hulls like AA and Remington they are too tight. The finish on them is excellent by the way.
Chuck them up in a drill. I adjusted the bolt so it hit bottom of the inside of the hull with the blade trimming down the hull to 67mm. Put the hull over the bolt end and run the drill as you move the hull upwards until it hits bottom. Withdraw and you are done. I put a bin of hulls on one side and drop them into a second bin once trimmed. I do recommend you get one of those self locking nuts and replace the bolt that comes with it with a longer bolt. You almost run out of threads adjusting to about 62mm length which trimmed my hulls to an overall length of 67mm. Self locking nut kept it from moving when used either tighter or looser. You can spin the blade around to cut in the opposite direction for our left handed users.
Last edited by KY Jon; 03/16/23 03:56 PM.
