Best for what? 38 Wadcutter is a flat front bullet used in target competition, that is highly accurate, has low recoil, and clips a neat clean hole in a paper target. Heavier solid bullets are used for hunting, and fast light hollow point bullets are used for defense.
Yes, you can shoot .38 caliber ammunition in a .357 caliber firearm.
Yes, you can shoot .38 caliber ammunition in a .357 revolver because the .357 revolver is designed to also shoot .38 caliber ammunition.
.357
No
It is marked on the barrel.
Yes, a .357 firearm can shoot .38 ammunition because the .38 caliber is slightly smaller than the .357 caliber, allowing it to fit and be fired safely in a .357 firearm.
NEVER FIRE OR ATTEMPT TO FIRE AMMUNITION IN A WEAPON NOT DESIGNED FOR THAT AMMUNITION!!!!!!!!!!!!!!!!!!!!!!!!!!! Danger,danger, danger
The best technique for accurately shooting a .38 caliber bullet in a .357 revolver is to use .38 special ammunition, which is specifically designed for .357 revolvers. This ammunition is slightly shorter than .357 rounds, allowing for better accuracy and performance in the revolver. Additionally, practicing proper shooting fundamentals such as grip, stance, and trigger control will help improve accuracy when shooting a .38 caliber bullet in a .357 revolver.
No, unless it's a frame with barrels that can be changed to suit different caliber ammunition.
Most say 38 special on the barrel
NEVER FIRE AMMUNITION IN A WEAPON IT IS NOT CHAMBERED FOR!!!!!!!!!!!!!!!!! No, No, NO
If this is a .38 cal (check the markings on the frame and barrell) it is chambered for .38 caliber. If it is a Police Positive ammunition would be the .38 PP If it is a Police Positive Special you could use .38 PPS Check with any reputable gun shop/dealer or range and they'll give you the information you need.