I am aware of only one chambering in the Browning hi-power,that is 9mm parabellum.
yes
Could be a rifle, shotgun or handgun.
1969
The letters PM in the serial number sequence indicates that your Browning HI-Power handgun was made in the year 1980.
The caliber for one.
9mm Parabellum is a caliber, not a firearm- there were several pistols in that caliber made in Belgium by FN. ONE of them that I happen to own is a Browning P-35, commonly called the Browning Hi-Power. If you go to Google, from the upper toolbar select IMAGES, type in Browning Hi Power, you should see several examples.
No model number. Made in 1969. High Power is what it is called
Browning.com has a sn function under customer service
Your Browning Hi-Power 9mm handgun was made in the year 1959,and will bring between 300-600 dollars depending on overall condition and a good bore.
Size and relative power. A .40 caliber bullet is .40 of an inch and the entire cartridge is 28.8 millimeters long. A .50 caliber (handgun) bullet is .50 of an inch and the entire cartridge is 40.99 millimeters long. The .50 caliber has more powder, more velocity, and more muzzle energy.
Have it examined by a competent gunsmith or send it to Browning.
The .44 caliber handgun was developed primarily for its stopping power and effectiveness in both self-defense and hunting scenarios. Introduced in the mid-19th century, it aimed to provide a balance between manageable recoil and sufficient ballistics for larger game. The popularity of revolvers chambered in .44 caliber, such as the Colt Walker and later the Smith & Wesson models, also reflected the needs of law enforcement and military personnel during that era. Overall, the .44 caliber became synonymous with reliability and power in handguns.