Little work on non-discarding 12ga sabots,You can get SPW
wads without slugs in them and we set up one for a light load.
We put a 20ga Lyman in some and they stay together ok. Just
shorten the bottom skirt of Lyman and bevel the bottom corner.
Total weight sabot and all is 360gr,,Shown In the picture..
We also shrunk the skirt of the 12ga Lyman cast slug and put it
in 12ga SPW wads and total about 550gr. If you have Lyman
12ga mold, can use it as pattern to make a slug to go into a
SPW wad. Leave the top part same as original Lyman and make
bottom so it fits in the SPW with real tight fit.
I like to use P14/M17 Enfields for our testing. Great for my 585HE
case and in picture it shows how we change the sear spring to one
on the back of the sear. So we can open up the bottom to feed
the long cases from singlestack magazine box by removing the
unneeded front of the sear and metal above it in the bottom, giving
room to the back, for cases that are 3.9" plus overall loaded length.
Couple guys who are setting up 585HEs in singleshots are going
to shoot 58cal Minies and other bullets and use black powder
and/or substitutes. So I tested some with Pyrodex pellets,
Used 54cal, 60gr equivalent and they stack in the case ok,
and just beveled corner of bottom one so it set tight to the base.
As the case has good inside radius. Used 3 pellets with 24ga
card over pellets, 3/8" felt wad and another card with 440gr Minie.
There is a certain nostalgia about all that sulfur smell.If you can
stand the cleaning. Slug going 2100.. 4 pellets about 2400.
Here is picture of another long bullet in sabot/wad , in 12ga that
was sent to me. Ajay on Shotgun World put these together.
Did some testing, 12ga plastic & brass with new super slow RE-33 powder.
It fires off ok in 12ga with 700gr and heavier slugs, with shotgun primers
like RE-17 which is much slower than shotgun powders. .
It is made the same way as RE-17 as far as how the rate of burn
deterrent is put into the powder. Which is why it ignites in large diameter
cases like 12ga and BMG with shotgun primers. Really be great for super
heavy 1100 to 1500 grain slugs to get good speed and keep case damaging
peak pressures down. Example in 3.5" Fiocchi 12ga plastic case, 690gr slug in
BPI Helix Driver Wad with 180 gr RE-33 the basecup only expanded .002".
And they are thinner basecup than some..Ed