If you could get slug in a 10ga sabot like 500 gr at 2200 fps
plus you might explode 6gal of water like that. That was
with a 600gr hollowpointed hardened slug at 2700, from
my Savage 210 with heavy barrel we put on. Ed
In my NEF Ultra Slug gun, w/12ga 3" plastic cases,
600 gr Dixie slug, our experimental loads are 1800 fps, with
24" shorty barrel. In 30 inch test gun 1930 fps, at pressures
less than REM factory Buckhammer slugs weighing the same,
going 4-500 fps slower. We tested a bunch of slower than
shotgun powders and found that in guns with modern steel
and heavy barrels, a lot more velocity is possible at
low pressures. In regular 3" chambers. This is all part of
our research. Ed
Here is pic of the NEF Ultra we test with. It came with heavy barrel
and we just lengthened chamber for our long brass case
and added weighted thumbhole stock. We shot 3.5"
plastic cases with slower powder
in NEF and got 600 gr to 2100.
That's 5800 ft lbs from
12ga plastic cases.Ed.
Our heavier slow powder loads are for heavy thick
barrels. You can use lighter loads of 4759 or
4227. How bid diameter is muzzle of your 870. Do they make
heavy rifled barrels. Ed
Got an 8ga barrel blank being made now,
will be here end of the week.Found this
info on plastic 8ga kiln gun loads, they
load a frangible 710gr slug at 2300-
for 8300ft lbs, load 1275gr hard slug to
1700, 8100 ft lbs. We will outdo those easy
with our non-shotgun powder loads, in
a heavy barrel. We setup an Enfield for 8ga.
In the 87 long barreled gun we will be testing
Breneke slugs. Guys are reporting good accuracy
in smooth and rifled barrels. The pictured barrel
on 87 is smooth and we will see how the
slugs in pic stand some speed.Ed
There is others who done some 20ga work. They got 3.5"
20ga brass cases made by Rocky Mtn Brass, and did some
load testing and increasing the speed ove rfactory slugs.Ed
Tested 35" smooth barrel in 1887. Got couple
1 oz foster slugs over 2400, with 110gr
of 4227. 3" plastic case, regular primers.
This is a heavy barrel for that type of load,
don't do this in your 12ga skinny barrels.
The 28GA FH cases on the way.Chambering
bolt gun for it now.. ED
In the 87 long smooth barrel got
1 oz Brenneke to 2400 with 110gr
of 4227, You could use 4759 and
VV110 also at lesser amounts.
Barrel is cylinder bore size.
Brenneke slugs need no wads as the
locked on wad works good.Ed
And going heavier in 87 got 600 grain
Dixie over 2000, got a Buckhammer slug
I took out of factory load over 1900.
Buckhammer and locked on wad is 630
gr. Tested in 3" plastic cases.
The firing pin on the 87 didn't protude out
like I like them to as it comes from factory,
so I removed .015 from the hammer stop.
It fires big and small primers perfect.Ed
10GA FH..a NEF 10ga, medium to heavy wt smooth barrel.
28" long, gun weighted to 14lbs. Factory FED 765gr loads
are 1300 fps. 200 gr of first powder tested is 7383 surplus
and the regular shotgun primers got 765 gr to 1600,
for 4300 ft lbs. Case won't hold anymore 7383.
Federal factory hollowbase slug is .025" smaller than
10ga bore. I bumped it up to the .775" size, by expanding
hollow base. With 7383 that gave another 150 fps.Fast starting
shotgun powders expand base better than much slower 7383.
The Federal factory load has 120gr of wads/seals about 1.4"
long. Better to replace with much more slower powder,
getting better velocity, still at low shotgun pressures.Ed
We will test 4227 with the same slug , and saboted slug
of some design. We roll crimped with crimper in drill press.
Case expansion with 7383 very little(.006") like
the factory loads. 3.5" plastic.Used one .050 wad.Ed
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