1:8.5” The 27 Nosler’s faster-than-standard twist barrel is designed to stabilize modern, long range bullets.
Based on the 404 Jeffrey Same case as the 30 Nosler When compared to the 28 Nosler, the 27 Nosler has a longer neck and a shorter length to the shoulder to prevent the 28 from being chambered in the 27.
The 27 Nosler has a long leade for sleek, high BC, long ogive, ABLR and RDF style bullets.
Fully prepped, Nosler premium cartridge brass in 27 Nosler will be available in 25ct boxes. If needed, 27 Nosler brass can be formed from 30 Nosler brass. 30 Nosler cases are preferred if forming 27 Nosler cases because of the similar shoulder dimension.
Loaded with a 150gr bullet, the 27 Nosler is 400fps faster than a 270 Win, and 300fps faster than a 270 WSM at the muzzle.
Loaded with a 150gr bullet, the 27 Nosler has an additional 800ft/lbs. of energy over the 270 Win and 600ft./lbs. more than the 270 WSM at the muzzle.
At 500 yds. the 27 Nosler drops 11” less than a 270 Win and 7” less than a 270 WSM.
Fireformed case, overflowing to the neck = 98.4 gr/H2O with a 150 AB seated to 3.340” OAL = 89.9 gr/H2O