Deer, bear, elk, moose.
.28 and .280 are the same diameter bullet. I know of no pistols in .280, with the possible exception of some of the single shot pistols that fire rifle cartridges. I know of no cartridge called the .28.
Yes, the B78 rifle was produced in .280 Remington caliber. The B78 is a single-shot rifle manufactured by Browning in the late 1970s and early 1980s, and it was available in several calibers, including .280 Remington. This caliber was among the options offered to cater to various hunting needs.
It's rated around 280 FPS. This is average for this rifle.
Both do what they are made for. What is your end use?
Yes- a very good deer rifle.
NFL player Margus Hunt weighs 280 pounds.
Many do, but, not all the time. You will have to call to find out.
0-500 USD depending on condition and accessories.
Tika is a subsidiary of Sako, Berreta, company.
50-500 USD depending on specifics
Nope, they're invisible. If you rephrase the question, maybe next time you won't get such a snarky answer.
Generally speaking, no. You can only fire the caliber for which the gun is chambered. There are some exceptions, but not many.