SAAMI Standard Pressures and Dram Equivalents For Shotgun Ammunition

Shotguns and Shotshells

We have received many inquiries regarding shotgun shell dram equivalents, load velocities, and SAAMI pressure standards.  So, in an effort to assist our customers and the shooting community at large, we have compiled the following basic information from ANSI/SAAMI Z299.2-1992, American National Standard Voluntary Industry Performance Standards for Pressure and Velocity of Shotshell Ammunition for the Use of Commercial Manufacturers.*  

SAAMI fired loads in full choke test barrels or improved cylinder test barrels as indicated in the various charts below.

Shotshell Standards - Improved Cylinder Barrels

Gauge Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
12 2-3/4" Skeet
2-3/4
1 1180 fps 11,500
12 2-3/4" Skeet 1 1145 fps 11,500
12 2-3/4" Skeet
2-3/4
1-1/8 1145 fps 11.500
12 2-3/4" Skeet 3 1-1/8 1200 fps 11,500
16 2-3/4" Skeet 1 1200 fps 11,500
20 2-3/4" Skeet
2-1/2
7/8 1200 fps 12,000
28 2-3/4" Skeet 2 3/4 1200 fps 12,500
.410 Bore 2-1/2" Skeet 1/2 1200 fps 12,500

 

 10 Gauge Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-7/8" 4-1/4 1-5/8 1285 fps 11,000
3-1/2" Mag 4-1/4 2 1210 fps 11,000
3-1/2" Mag 4-1/2 2-1/4 1210 fps 12,000

 

 12 Gauge Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-3/4" 2-3/4 1 1180 fps 11,500
2-3/4" --- 1 1145 fps 11,500
2-3/4" 2-3/4 1-1/8 1145 fps 11,500
2-3/4" 3 1-1/8 1200 fps 11,500
2-3/4" 3 1-1/4 1165 fps 11,500
2-3/4" 3-1/4 1 1290 fps 11,500
2-3/4" 3-1/4 1-1/8 1255 fps 11,500
2-3/4" 3-1/4 1-1/4 1220 fps 11,500
2-3/4" 3-1/2 1-1/8 1310 fps 11,500
2-3/4" 3-1/2 1-1/4 1275 fps 11,500
2-3/4" 3-3/4 1-1/4 1330 fps 11,500
2-3/4" Mag 3-3/4 1-1/2 1260 fps 11,500
2-3/4" 4 1-1/2 1315 fps 11,500
3" 3-3/4 1-3/8 1295 fps 11,500
3" 4 1-5/8 1280 fps 11,500
3" 4 2 1175 fps 11,500
3" Mag 4 1-7/8 1210 fps 11,500
3-1/2" 4-1/4 2-1/4 1150 fps 14,000

 

 16 Gauge Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-3/4" 2-1/2 1 1165 fps 11,500
2-3/4" 2-3/4 1 1220 fps 11,500
2-3/4" 2-3/4 1-1/8 1185 fps 11,500
2-3/4" 3 1-1/8 1240 fps 11,500
2-3/4" 3-1/4 1-1/8 1295 fps 11,500
2-3/4" Mag 3-1/4 1-1/4 1260 fps 11,500

 

 20 Gauge Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-3/4" 2-1/2 7/8 1210 fps 12,000
2-3/4" 2-1/2 1 1165 fps 12,000
2-3/4" 2-3/4 1 1220 fps 12,000
2-3/4" Mag 2-3/4 1-1/8 1175 fps 12,000
3" Mag 3-1/4 1-1/8 1285 fps 12,000
3" Mag 3-1/2 1-3/16 1295 fps 12,000
3" Mag 3 1-1/4 1185 fps 12,000

 

28 Gauge Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-3/4" 1-3/4 5/8 1160 fps 12,500
2-3/4" 2-1/4 3/4 1295 fps 12,500
2-3/4" 2-1/4 7/8 1250 fps 12,500
2-3/4" Mag 2-1/4 1 1205 fps 12,500

 

.410 Bore Shotshell Standards - Full Choke Barrels

Shell
length
Dram
equivalent
Ounces
of lead
shot
Mean
velocity @ 3'
(+/- 90)
Maximun
average
pressure (psi)
2-1/2" - 1/2 1200 fps 12,500
3" - 11/16 1135 fps 13,500

 

*Disclaimer: The above information is provided for informational purposes only. Classic Shooting Company, LLC does not guarantee its accuracy, nor warrants it against the inclusion of errors or omissions. We do not recommend the use of this information for any specific or implied purposes.


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