HOWDY’s TIPS FOR
BLACK POWDER SHOTGUN SHOOTING
PART 2
12 gauge load for
target shooting knock down steel targets is 90 grains of 2Fg
behind 1 1/4 oz. of shot. You can use 80 grains of 2Fg powder,
the pattern is sometimes denser.
SHOT PELLETS PER OUNCE
SHOT SIZE SHOT DIAMETER
(INS) NO# OF PELLETS PER OUNCE
12 .05 2385
9 .08 585
8 .09 410
7-1/2 .O95 350
6 .11 225
5 .12 170
4 .13 .135
2 .15 90
BB 18 50
NOTE: Use a CVA Shotgun
Volumetric Measurer. With this you can use equal Volume for
Volume proportions of powder to shot - NEVER BY WEIGHT.
STEEL SHOT PELLET DIAMETER
NO# 7 .100 B .170"
6 .110 BB .180"
5 .120 BBB .190"
4 .130 T .200"
3 .140 TT .210"
2 .150 F .219"
1 .160
PELLET HARDNESS VARIATION
TYPE SHOT BURNELL HARDNESS
Pure lead ==== 5.0
Remington Bag Shot no.
71/2 - 11.4
Winchester === 71/2 - 13.9
Remington ===== NO#2 -
12.0
Copper Plated Shot === 9.0
Winchester AA Shell NO# 8
=== 17.8
Winchester AA Shell NO# 7-1/2
=== 20.0
Peters Rx P Shell NO# 7-1/2====
l8.0
Lead Shot Plus 10% tin
alloy 11.5
CHOKE PATTERN DENSITY
Extra Full = 80% or tight
Full Choke = 70 to 79 %
Improved Modified = 65 to
69 %
Modified = 55 to 64 %
Improved Cylinder 1 = 50
to 54 %
Improved Cylinder II = 45
to 49 %
Cylinder = under 45 %
RECOMMENDED MAX. POWDER
CHARGES
.32 40 GRS. 3F
.36 50 GRS 3F
.40 60 GRS 3F
.45 70 GRS 3F
.50 80 GRS 2F
.54 90 GRS 2F
.58 90 GRS 2F
CAUTION: Pressure
generated from ignition: 100 grains of 3 Fg powder behind a
patched round ball will generate much more pressure than the
same volume of 2 Fg powder.
A barrel 1" across
the flats; 3 Fg. charge may burst that barrel, You must lower
the charge.
FORMULA: Choosing a charge
- 7:3 --- for every 7 grains of ball weight use 3 grains of
powder.
Now, go burn
some powder!
Howdy
Davis