The cylinders on my 69 came in right at .430. A .430 sized, lubed and oiled bullet will push through all 5 cylinder throats with just a bit of help and come out the other side at exacly the same diameter they went in. I run clip-on wheel weights + 2% tin for mild to moderate velocity 260 grain Keith style plain-base loads and Lyman #2 for Heavier 260 grain LBT style WFN-GC bulets pushed harder with Lil Gun or H110. The model 69 is a significantly lighter revolver than my old model 29 and I find the heavier 280+ grain LBT style WFN's pushed hard lead to badly climbing POI's relative to moderate velocity practice loads so I tend to stay with bullets of about 260 grains which is plenty for my uses.
No leading issues have shown up.
Last edited by outahere; 09/22/23.
