Ejcb Posted May 11, 2019 Report Share Posted May 11, 2019 Hello, use the above tool without issue on .303, using the 7.5X55 and it is exhibiting marks which suggest the brass is digging a groove in the steel - which I’d imagine would be impossible? Thoughts please! Link to comment Share on other sites More sharing options...
Popsbengo Posted May 11, 2019 Report Share Posted May 11, 2019 I assume the part shown is the arbor on which the case rotates against the cutter blade? Brass won't damage the steel but hard particles caught between will. Won't be doing your brass any favours either! Link to comment Share on other sites More sharing options...
Ejcb Posted May 11, 2019 Author Report Share Posted May 11, 2019 Indeed - not delighted and have no idea what the abrasive could be, gave the arbor a good clean before use in case there may be some steel particles from machining. am reloading for open sighted K31 so am confident that this shouldn’t be a show stopper. Link to comment Share on other sites More sharing options...
Popsbengo Posted May 11, 2019 Report Share Posted May 11, 2019 was the 7.5x55 clean/virgin brass? is the arbor a snug fit? particles off the cutting blades will be hard, if they can get caught in a sloppy fitting arbor you may have the culprit. Link to comment Share on other sites More sharing options...
Ejcb Posted May 11, 2019 Author Report Share Posted May 11, 2019 Brand new PPU brass and freshly opened cutter. Hard brass may damage brass, but the steel arbor has been given a going over - perhaps particulates from the manufacturing process of either the brass or arbor. Link to comment Share on other sites More sharing options...
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