There is so much great knowledge around here .... so I thought I ask my question here.
I want to come up with a subsonic 12ga TSS load that would have a velocity of around 900 - 1000fps. The reason is ... my little 870 Tac-14 has become my favorite woods bumming/small game gun ..... but ufffffffffff ... she is loud with the 14" barrel and without hearing protection.
( link to image )
So, I found a couple of published steel shot recipes and for which I have all the components.
My question now is, what would happen if I substitute the steel shot with equal weight of TSS shot of about roughly the same size, and add some filler to make up for the difference in volume? Would pressures go up or down? And why?
Again the substitution would be same weight .... so same payload.
Here are the recipes .... as you can see they are not subsonic yet .... one is close though ... I would have to decrease the powder load a bit.
Load with Hodgdon International Clays
(from the Advantages Manual)
• Cheddite hull 2 ¾, 12ga
• Cheddite Primer 209
• International Clays Powder - 18 grains
• FS12 gas seal
• LBC30 wad
• ¾ oz of steel shot (#7 or #6)
• 7800 PSI (SAAMI Max: 11,500 PSI)
• 1140 FPS (Speed of sound: 1125 FPS)
Load with Hodgdon Clays
(from the Advantages Manual)
• Cheddite hull 2 ¾, 12ga
• Cheddite Primer 209
• Clays Powder - 18 grains
• FS12 gas seal
• LBC30 wad
• ¾ oz of steel shot (#7 or #6)
• 9200 PSI (SAAMI Max: 11,500 PSI)
• 1300 FPS (Speed of sound: 1125 FPS)
Load with Hodgdon Titewad
(from the Advantages Manual)
• Cheddite hull 2 ¾, 12ga
• Cheddite Primer 209
• Titewad Powder - 17 grains
• FS12 gas seal
• LBC30 wad
• ¾ oz of steel shot (#7 or #6)
• 1050 PSI (SAAMI Max: 11,500 PSI)
• 1330 FPS (Speed of sound: 1125 FPS)