Originally Posted by Rustystud
What is your reaming method ream and clean or do you use a flush operation?
Do you use a floating reamer holder?
I use a high-pressure flush system with a semi synthetic coolant. lubricant. I also use a floating reamer holder. I use piloted reamers and have about 100 bushings in .0001 increments.
With Carbide Reamers there is a need of speed so the reamer can do its best cutting.
M7 Tool steel will not hold up the more than 175 RPMS.
I ream at 125-600 RPMs.
If you are still manually reaming 25-48 RPMS is Best.
I find the cartridge size influences ny speed and feed.
Custom Guns and Ammunition
+1 Very good advice !!!!!
I do not have a flush system (One day I will) so I run slower spindle speeds (44 rpm and 77 rpm
) because my lathe doesn't go any slower.
Dave Manson said I could run much faster with his reamers but with out a cooling/flush system
I don't want to ruin a reamer. He also said that the way I am using them they should last 20 to
25 uses. so far the most I have used one reamer is 8 times and that thing will cut you if your
not careful .
I run the small reamers @ 77rpm and the big ones at 44 rpm because of surface speed of the
I know it takes a little longer at those speeds but who's in a hurry. I also stop and clean after
20 to 25 thousandth of cutting and reduce it to 10 thousand when nearing the end of
chambering to give the chamber a really nice finish.
SO don't get in a hurry unless you have a high speed setup.
J E CUSTOM