Shooting Sports USA - May 2018 - 31

primers had evidence of primer flow. At the
middle charge weight, five of the ten 1½
primers had primer flow. One of these was
severe primer flow, where the firing pin dent
had been completely flattened out. The 5½
primers had minor flow in two primers. None
of the CCI 500 primers had primer flow.
At the highest charge weight, all the primer
brands experienced primer flow. But only
the 1½ primers had extreme flow resulting in
the firing pin dent being completely flattened
out, though some of the other primers were
close to that. No primers were pierced.
The Remington 1½ primers are especially
sensitive to pressure. They are more subject to
primer flow, and produce more serious primer
flow when pressure gets higher than the other
primers tested. However, they showed no
evidence of primer flow at the lowest charge
weight, which is a moderate pressure load.
Since primer flow can be a problem, they
aren't the best choice for high pressure loads.
If in doubt, try them with your load to see
how they react.
I limit use of the 1½ primers in 9mm to
low pressure loads, to reduce the chance of
No Flow

primer flow and primer material plugging
the firing pin hole. I've also used 1½ primers
with good results in small primer .45 Auto
cases. The .45 Auto pressure limit is 21,000
psi, which certainly qualifies as low pressure.
Keep Remington's recommendation for 1½
primers in mind the next time you're shopping for primers. The 1½ primers work great
in low to moderate pressure pistol rounds,
but if you are loading to high pressure, a different primer might be a better choice.
As a final note, Remington's 6½ small rifle
primers also come with a warning about their
use in rifle cartridges. They say, "Do not use
6½ small rifle primers in high intensity rifle
cartridges such as the .17 Rem., .222 Rem., and
the .223 Rem." Remington's catalog shows the
6½ listed only in the .22 Hornet (49,000 psi)
and .30 Carbine (40,000 psi) calibers. All other
small rifle primer calibers use the 7½ primers.
The Remington catalog can be found
at: remington-catalog.com/catalogs/
remington/2017. A downloadable PDF
version can be found here: remingtoncatalog.com/catalogs/remington/2017/
pdf/2017-Remington-Catalog.pdf *

Partial Flow

Firing Pin Dent Flattened

Fired cases illustrate the appearance of a normal fired primer with no flow, partial primer flow (marked with arrow),
and severe primer flow where the firing pin dent is completely flattened.

SSUSA.ORG | MAY 2018

31


https://www.remington-catalog.com/catalogs/remington/2017 https://www.remington-catalog.com/catalogs/remington/2017 https://www.remington-catalog.com/catalogs/remington/2017/pdf/2017-Remington-Catalog.pdf https://www.remington-catalog.com/catalogs/remington/2017/pdf/2017-Remington-Catalog.pdf https://www.remington-catalog.com/catalogs/remington/2017/pdf/2017-Remington-Catalog.pdf http://www.SSUSA.ORG

Table of Contents for the Digital Edition of Shooting Sports USA - May 2018

Contents
Shooting Sports USA - May 2018 - Cover1
Shooting Sports USA - May 2018 - Cover2
Shooting Sports USA - May 2018 - 3
Shooting Sports USA - May 2018 - 4
Shooting Sports USA - May 2018 - 5
Shooting Sports USA - May 2018 - Contents
Shooting Sports USA - May 2018 - 7
Shooting Sports USA - May 2018 - 8
Shooting Sports USA - May 2018 - 9
Shooting Sports USA - May 2018 - 10
Shooting Sports USA - May 2018 - 11
Shooting Sports USA - May 2018 - 12
Shooting Sports USA - May 2018 - 13
Shooting Sports USA - May 2018 - 14
Shooting Sports USA - May 2018 - 15
Shooting Sports USA - May 2018 - 16
Shooting Sports USA - May 2018 - 17
Shooting Sports USA - May 2018 - 18
Shooting Sports USA - May 2018 - 19
Shooting Sports USA - May 2018 - 20
Shooting Sports USA - May 2018 - 21
Shooting Sports USA - May 2018 - 22
Shooting Sports USA - May 2018 - 23
Shooting Sports USA - May 2018 - 24
Shooting Sports USA - May 2018 - 25
Shooting Sports USA - May 2018 - 26
Shooting Sports USA - May 2018 - 27
Shooting Sports USA - May 2018 - 28
Shooting Sports USA - May 2018 - 29
Shooting Sports USA - May 2018 - 30
Shooting Sports USA - May 2018 - 31
Shooting Sports USA - May 2018 - 32
Shooting Sports USA - May 2018 - 33
Shooting Sports USA - May 2018 - 34
Shooting Sports USA - May 2018 - 35
Shooting Sports USA - May 2018 - 36
Shooting Sports USA - May 2018 - 37
Shooting Sports USA - May 2018 - 38
Shooting Sports USA - May 2018 - 39
Shooting Sports USA - May 2018 - 40
Shooting Sports USA - May 2018 - 41
Shooting Sports USA - May 2018 - 42
Shooting Sports USA - May 2018 - Cover3
Shooting Sports USA - May 2018 - Cover4
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