Some more slug experimenting and developement.
Here are pictures of the full bore Lee Key Slug
we had a guy cast. He took Lee Key mold and machined
it out to cast a .729" full bore slug.
The original Lee mold makes slugs smaller diameter,
so that they fit in a 12ga wadcup.
Slugs are hard cast alloy to take high speeds..
In picture is two MRC 2 5/8" brass 12ga cases with
slugs in them. These slugs with those brass cases are
being tested first in rifled barrels in a guys 1887 WIN,
where they needed short combination to feed from tube.
These slugs have real good shoulder step to
roll crimp against when used in plastic cases.
These first ones are 500 gr.The guys are reworking
another die to get the weight up to about 600gr,
that some of our the brass case guys want to use.
So many guys like the 600 gr size, but these with
the partly hollow base allows them to be longer,
for a little more stability,if used in smooth barrels.
Lee molds are not a real high price so it isn't
a bad deal to get them and change them.
Some newer slug ideas coming around. First is Brenneke,
a locked on base ounce slug, in sabot at factory speed of
16-1700 or so in 3" plastic.Really go in our 3.5" loads.
Brenekke has had full bore slugs with lock-on seal and
cushion, but this new appliction putting them in a sabot.
Third is Dupleks, steel slug riding on a plastic band,
penetrates very well. About 1 1/8 oz.And no steel touches
the bore only the plastic.Should have good penetration
witout breaking apart.These are front heavy will get
fair accuracy in smooth bores.
A new slug from the EU,a new 300gr US-S slug with locked
on base, discarding petals, by European Cartridge. Accurate
in smooth bores, Using the same idea as their all brass slugs
we showed above with locked on base, and discarding front petals.
Only these are mostly aluminum to get a lighter slug combo.In the
first picture.In 3" plastic they load to over 2100 with shotgun
powders. In a 3.5" plastic and our slower powders
we can get 2800. 2nd picture some results of penetration tests
in a sand bank they did. The brass centers penetrate like the
all brass ones they make.They are reporting 2" groups from regular
barreled smoothbore pumpguns at 50 yds with scope.Ed