June 3, 2010

posted Feb 25, 2011, 6:14 AM by Peter Lucas

  Tests using Hart O/U with modified chokes.  Following tests were shot using 2.75 drams (72 grains) of Goex FFFG.  The shot charge was 1 1/8 ounce of 7 1/2s; which is the equal volume of powder.  One over the powder wad and one over the shot wad.  No cushion wad was used:

 Number of pellets at 25 yards percent pellets at 40 yards
 10 inch20 inch30 inchtotal 10 inch20 inch30 inchtotal
load 1233
113
18
364
 32
37.1
18
87.1
load 2214
170
24
408
 26.2`
`44.5
22.4
93.1
load 3266
110
4
380
 40.4
`40.9
`13.5
81.1
load 4262
117
11
390
 38.1
41.4
15.7
95.1
Average
244
127
14
385

34.1
40.9
17.4
89.1

   This load is significantly tighter than a full choke load which would produce 70% patterns at 40 yards.
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