originally posted by bspencer:

based on 150 grain bullet

7mmWSM
200 yrds 2648 FPS 2335 ft lbs
300 yrds 2396 FPS 1911 ft lbs

270WSM
200 yrds 2601 FPS 2252 ft lbs
300 yrds 2350 FPS 1839 ft lbs

300 mag
200 yrds 2636 FPS 2314 ft lbs
300 yrds 2442 FPS 1827 ft lbs

270
200 yrds 2336 FPS 1817 ft lbs
300 yrds 2442 FPS 1827 ft lbs



I don't really care whether or not a 7mm WSM is better than a 270 or 300 WSM or whatever.I'd simply like to point out that there's something wrong with the numbers above. For instance, if they're all 150gr.bullets of like kind, then a 150 gr. 7mm bullet is going to have a higher ballistic coefficient than a 30 caliber bullet and, therefore, retain velocity and energy better over distance. Yet above, the 7mm bullet, while traveling faster at 200 yards, is slower at 300 yds.than the 30 cal. This isn't possible if the bullets are the same kind. The bullets must be of a different kind in each example or else the numbers are wrong. Regardless, it makes the comparison less than valid.

More obvious than that, however,is the 270 example. The velocity is higher at 300 yards than it is at 200. Is there some sort of self propelled bullet out there I don't know aboutthat gains speed as it leaves the muzzle? If so I'd like to know about it.

Please recheck the numbers and repost. And if you don't mind, list the bullet used in each cartridge.