Don't leave it in the chamber for more than 20min. It can be very difficult to remove. It shrinks for the first 30 min. of cooling to allow its removal from the chamber. It then expands back to the chambers size for about 200 hours, allowing the casting to be measured with great accuracy. After 200 hours it then expands roughly .25% so never make your measurements after that time period. U can emagine the problems that could create. Don't ever overfill past the chamber. If there is any overhang it can be very tough to get out. If it ever does get stuck you can take a heat gun or a blow dryer and warm your chamber untill it slides out. Never use a flame because it can effect the finish on your gun. Plan ahead. Tape off your trigger group. You don't want foreign material stuck inside. It can cause unsafe conditions. You can also go to the SAMMI website and print off your bullet and chamber dimensions so you have a good guideline.
Last edited by rockywyo; 03-11-2012 at 03:37 AM.