American Rifleman - June/July 2021 - 57

The 27 Nosler

he 27 Nosler, introduced in 2020, is the fifth cartridge developed by the family-operated company on
the modified .404 Jeffery case. The 26 Nosler came
first in 2014, followed by the 28 Nosler (2015), the
30 Nosler (2016) and the 33 Nosler in 2017. All share
the same 35-degree shoulder angle. Maximum diameter
of the rebated rim is 0.534 " , or the same as that of the
.300 Win. Mag. and other cartridges on the Holland
& Holland-style case. Base diameter (immediately
forward of the extraction groove) is 0.550 " , and from
there it tapers to 0.528 " at the body/shoulder juncture.
During the design stages of the 27 Nosler and its
littermates, cartridge Maximum Overall Length was
kept at 3.340 " for compatibility with the .30-'06 Sprg.length Nosler Model 48 action. Going to .30 cal. and
larger required shortening the case slightly and moving
the shoulder back in order to have sufficient neck
length. Case dimensions were also refined to prevent
cross-caliber chambering. It was decided that bullet

Photos by author

AMERICANRIFLEMAN.ORG

and cartridge neck diameter alone was not enough to
guarantee that someone with arms like Popeye (the
Sailor Man) could not force a 28 Nosler cartridge into a
rifle chambered for the 27 Nosler. Locating the shoulder datum point of the 28 Nosler case a bit farther
forward lessened the odds of that happening. Sound
familiar? Then you obviously already know why the
shoulder of the .280 Rem. is farther forward than the
shoulder of the .270 Win.
Going with a fat parent case made possible the
development of cartridges short enough to squeeze
into the magazine of the Model 48 rifle while maintaining a large propellant capacity. According to
Nosler, with the 150-gr. AccuBond Long Range bullet
seated to a cartridge length of 3.340 " , the 27 Nosler
case has a net water capacity of 91.5 grs. With the
same bullet seated in the .270 Wby. Mag., .270 WSM
and .270 Winchester, their net capacities are 79.4,
71.8 and 62.8 grs., respectively.

JUNE/JULY 2021

57


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American Rifleman - June/July 2021

Table of Contents for the Digital Edition of American Rifleman - June/July 2021

Contents
American Rifleman - June/July 2021 - Cover1
American Rifleman - June/July 2021 - Cover2
American Rifleman - June/July 2021 - 1
American Rifleman - June/July 2021 - Contents
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American Rifleman - June/July 2021 - Cover3
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