Reference

Velocity of Light Loads with Equal Volumes of Shot and Powder

posted Jun 5, 2011, 2:06 PM by Peter Lucas   [ updated Oct 11, 2011, 9:11 AM ]



 Powder (grains)   
 Shot     Average Velocity
 34 1/2 846
 42.5 5/8 992
 51 3/4 993
 59.5 7/8 1053
 68 1 1044
 76.5 1 1/8
 1048

 
These tests were shot on June 4, 2011 with my sidehammer gun with 26 inch barrels, Schutzen Reenactor Powder and standard CCI caps.  The wad column was a single nitro card over the powder and a single overshot wad. The following represents the average velocity of a six shot string.

Shotgun Bore Diameters

posted Feb 1, 2011, 6:05 AM by Peter Lucas

Gauge 

Bore diameter
(millimeters)

Bore diameter
(inches)

6

23.3

0.92

10

19.7

0.77

12

18.5

0.73

14

17.6

0.69

16

16.8

0.66

20

15.6

0.615
24
14.7
0.58
28
14.0
0.55
32
13.4
0.526

Muzzle Loading Shotgun Velocities: One Ounce Loads

posted Feb 1, 2011, 6:01 AM by Peter Lucas



Velocity of One Ounce Loads
grains drams Lyman Handbook Goex FFg 26" barrel Pedersoli SxS Goex FFFg 28" Barrel Trap Underhammer Goex FFFg 33" barrel
68.4 2.50 1090 1152 1141
70.0        
75.2 2.75   1151 1158
80.0 2.93   1162  
82.0 3.00 1160   1198
85.0        
88.9 3.25 1170    
90.0        
95.7 3.50 1180    
100.0        
102.5 3.75 1200    

Equal Volumes of Shot and Powder by Weight

posted Feb 1, 2011, 5:57 AM by Peter Lucas   [ updated Mar 4, 2013, 10:39 AM ]


Shot
(ounces) 
Black Powder
(drams)
Black Powder
(grains)
 1/21 1/2 41
 5/81 3/447 
 3/4 255
 7/8     2 1/462 
 12 1/2
68
 1 1/8
 2 3/4
 75
 1 1/4
 3
 82
 1 3/8
 3 1/4
 89
 1 1/2
 3 1/2
 96

black powder and black powder substitutes for various volumetric loads

posted Feb 1, 2011, 5:56 AM by Peter Lucas



Drams
(by volume)
Goex  FFg 
Triple Seven
Triple Seven Adjusted 15%  Pinnacle  FFg
Pinnacle  FFFg 
Pyrodex RS


 
 

4109.280.068.096.192.874.7
3.75102.475.063.890.187.070.0
3.595.670.059.584.181.265.4
3.2588.765.055.378.175.462.1
381.960.051.072.169.656.0
2.7575.155.046.866.163.851.4
2.568.350.042.560.158.046.7

Standard Shotgun Pattern Densities

posted Feb 1, 2011, 5:53 AM by Peter Lucas   [ updated Feb 1, 2011, 6:07 AM ]


Choke20 yards30 yards40 yards
Cylinder80%60%40%
Skeet 92%72%50%
Improved Cylinder 100%77%55%
Modified 100%83%60%
Improved Modified 100%91%65%
Full 100%100%70%

Lead Bird Shot: Size Weight and Pellet per Ounce

posted Feb 1, 2011, 5:47 AM by Peter Lucas   [ updated Feb 1, 2011, 6:08 AM ]


ShotPellet DiameterAverage PelletApproximate # of
Number(Inches)Weight (Grains)Pellets per Ounce
90.080.75585
8 1/20.0850.88485
80.091.07410
7 1/20.0951.25350
60.111.95225
50.122.58170
40.133.24135
20.154.8690
BB0.188.7550

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