150 grain Remmington Core-Lokt is a good round.
Really depends on the load, but the .270 is typically the more powerful of the two.
150 grain vld
None of the above. The best, IMO, to start with is the 22lr.
It's the caliber of the cartridge it fires.
Definitely Not !!
Remington .270, 150 grain.
At 800 yards, a .270 caliber rifle shooting a typical 130-grain bullet at a velocity of around 3,000 feet per second may drop around 40-50 inches, depending on factors such as bullet weight, ballistic coefficient, and environmental conditions. It's recommended to use a ballistic calculator or chart specific to your rifle and load for a more accurate estimate.
No one knows.
General rule of thumb is that the best caliber is the one which best suits you. Of the two, .270 would be the more powerful round. Both are substantial for hunting something like deer, although the .243 is probably better suited for the experienced hunter, whereas the .270 would be a little more forgiving to the novice hunter. The .270 is a necked down .30-06, and the .243 is a necked down .308.
300 or so.
Have a gunsmith verify the exact 270 chambering. <><><> Agree. The standard .270 cannot fire the .270 WSM, and vice versa.
Generally speaking, no. You can only fire the caliber for which the gun is chambered. There are some exceptions, but not many.