Which .50 cal bullet did you have in mind? A standard 12.7x99 (.50 BMG) ball projectile weighs something like 660 grains, while dedicated sniping cartridges might have a projectile weighing more in the vicinity of 750 grains.
If you mean how heavy is the bullet in a .40 caliber cartridge, the answer is, it ranges from about 150 grains to about 180 grains.
Depends on the powder.
Contact the maker of your rifle for their instructions. It will depend on bullet weight. Assuming you mean a .50 cal MUZZLELOADER- and not a .50 Barrett- between 75 and 90 grains of ffG black powder is an average load for a patched ball.
What about it?
what type bullet in 50 cal
There are a lot of variables involved with the number of grains of powder in any given caliber round. Most importantly are the type of powder and the weight of the bullet. After that is the loader's preference as to the velocity of the round. For example, I load a 155 grain .40 caliber bullet using Ramshot Zip powder for a "light" velocity of about 1050 feet per second using 5.3 - 5.4 grains of powder.
22 cal 224 dia bullet.
Let's discuss some terms. GRAINS used in this context is a measure of weight. The weight will depend on WHICH powder is used, and WHICH weight bullet is used. It may vary from 4.5 grains to 12 grains. For your own safety, NO ONE should ask for load data from an open site such as Wikianswers. For all you can tell, I am 11 years old, and Mom does not know I am on the computer. (I'm not, and she knows) PLEASE obtain load data from the powder and bullet maker sites- trusted data.
The bullet itself - no.
NO. Do not attempt this.
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Roughly 40 grains, but it will vary depending on round ball or elongated bullet. We would urge you to contact the manufacturer for an owner's manual for your revolver. Many makers have manuals available on line, or free for the asking from their customer service department.