243 rounded to the nearest 100 (hundreds place) is 200.
Anything from 235 to 244
You round it down to 49600.
You round it down to 19700.
If you round it to the nearest 10, then it rounds up to 30. If you round it to the nearest 100, 1000 etc it rounds down to 0.
243 rounded to the nearest 100 (hundreds place) is 200.
240
most certainly not the m-16 is chambered in 223 or 5.56 NATO a 243 or 6mm is a larger round
No, you cannot, and attempting to do such would be extremely dangerous.
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.
The .243. It's basically a necked down .308 Winchester.
Anything from 235 to 244
no- very much a center fire cartridge. It is the .308 cartridge necked down to a smaller (.243) bullet.
235, 236, 237, 238, 239, 241, 242, 243, 244
Round down
.243 THOUSANDTHS OF AN INCH DIAMETER BULLET. WIN SIMPLY IS SHORT FOR WINCHESTER, THE ORIGINATOR OF THIS CALIBER. THAT DOES NOT MEAN ONLY WINCHESTER MAKES GUNS IN THIS CALIBER. MANY GUN MAKERS CHAMBER THIS ROUND. IT IS A GOOD DEER, VARMINT, COYOTE ROUND.
To round off 430 you will have to round up or down. To round down then it till be 400 to round up it will be 500