So a few months ago I decided to cast up a pile of noe 311299's for the garand. I used a high Lino/tin mix at around 24 bhn, powder coated and loaded up about 500 rounds with IMR 4895
When I loaded them they would just barely chamber due to slight engraving on the bore rider section just behind the ogive.
Wouldn't you know they grew in diameter and now jam when the bolt closes. When you open the bolt the bullet sticks in the bore and dumps all the powder in the action.
Darn! Looks like the collet puller is gonna get used ALOT soon. Did I mention around 500 rounds?
Lab