Shooting Sports USA - August 2017 - 19

160 CAST

170 FMJ

180 JFP

Excess
Bulge

Long and heavy bullets in Hornady .38 Super Comp cases. The 160- and 170-grain bullets fit with no excess bulging,
but the 180-grain bullet had a measurable bulge at the base of the bullet.

H

RIMLESS CASES
ARE THE BEST
DESIGN FOR
SEMI-AUTOMATIC
PISTOLS, AND
ONE FLAW OF THE
.38 SUPER IS ITS
SEMI-RIM

ornady just released
a new brass case for
.38 Super shooters,
this one a rimless .38 Super
Comp. Rimless cases are the
best design for semi-automatic
pistols, and one flaw of the .38
Super is its semi-rim.
The .38 Super is actually the
.38 Automatic with a different
name. (To be correct, the Super's name is .38
Super Automatic +P.) The .38 Automatic was
created in 1900 by John Browning for his
new semi-automatic pistol produced by Colt.
Mr. Browning designed the case with a semirim, intended to be used for headspacing the
cartridge. It might have seemed like a good
idea at the time, but the semi-rim was unnecessary and would prove to be less than ideal

over time.
When cartridges are
stacked in the magazine, the
rim of the upper round is
positioned in the extractor
groove of the underlying
round. With the semi-rimmed
.38 Super, the rim protrudes
farther into the extractor
groove than rimless cases
like the .45 Auto. The semi-rim greatly
increases the amount of force required
to strip the top round from the magazine.
It actually requires that the underlying
rounds be pushed down slightly so the top
round can slide forward. The semi-rim also
encourages nosedive. A rimless case offers
smoother, easier feeding and higher feed
angles because of less nosedive.

SSUSA.ORG | AUGUST 2017

19


http://www.SSUSA.ORG

Table of Contents for the Digital Edition of Shooting Sports USA - August 2017

In This Issue
Shooting Sports USA - August 2017 - Cover1
Shooting Sports USA - August 2017 - Cover2
Shooting Sports USA - August 2017 - 3
Shooting Sports USA - August 2017 - 4
Shooting Sports USA - August 2017 - 5
Shooting Sports USA - August 2017 - In This Issue
Shooting Sports USA - August 2017 - 7
Shooting Sports USA - August 2017 - 8
Shooting Sports USA - August 2017 - 9
Shooting Sports USA - August 2017 - 10
Shooting Sports USA - August 2017 - 11
Shooting Sports USA - August 2017 - 12
Shooting Sports USA - August 2017 - 13
Shooting Sports USA - August 2017 - 14
Shooting Sports USA - August 2017 - 15
Shooting Sports USA - August 2017 - 16
Shooting Sports USA - August 2017 - 17
Shooting Sports USA - August 2017 - 18
Shooting Sports USA - August 2017 - 19
Shooting Sports USA - August 2017 - 20
Shooting Sports USA - August 2017 - 21
Shooting Sports USA - August 2017 - 22
Shooting Sports USA - August 2017 - 23
Shooting Sports USA - August 2017 - 24
Shooting Sports USA - August 2017 - 25
Shooting Sports USA - August 2017 - 26
Shooting Sports USA - August 2017 - 27
Shooting Sports USA - August 2017 - 28
Shooting Sports USA - August 2017 - 29
Shooting Sports USA - August 2017 - 30
Shooting Sports USA - August 2017 - 31
Shooting Sports USA - August 2017 - 32
Shooting Sports USA - August 2017 - 33
Shooting Sports USA - August 2017 - 34
Shooting Sports USA - August 2017 - 35
Shooting Sports USA - August 2017 - 36
Shooting Sports USA - August 2017 - 37
Shooting Sports USA - August 2017 - 38
Shooting Sports USA - August 2017 - 39
Shooting Sports USA - August 2017 - 40
Shooting Sports USA - August 2017 - 41
Shooting Sports USA - August 2017 - 42
Shooting Sports USA - August 2017 - 43
Shooting Sports USA - August 2017 - 44
Shooting Sports USA - August 2017 - 45
Shooting Sports USA - August 2017 - 46
Shooting Sports USA - August 2017 - 47
Shooting Sports USA - August 2017 - 48
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