Proofhouse.com has Colt sn data.
Look on the barrel, it will be marked with the correct ammunition.
Look on the barrel, it will be marked as to the proper ammunition.
It is marked on the barrel.
It is marked on the slide.
Should be marked on the barrel. If not, take it to a gunsmith.
It should be marked on the barrel.
43 Spansih
It should be marked on the barrel
Measuring cylinder graduation may be marked in milliliters and fluid ounces. Pints are not a common unit used for measuring cylinder graduations.
Graduated cylinders are marked in milliliters (mL).
your pooo
Only if it is marked ".223 Remington" on the barrel.