Penetration with slugs-Had a bunch of
wood blocks up to 12" through.

20ga load is a 54 cal 410 gr slug glued in wadcup.
Gives the same effect as Brenekke with locked on base..
Good in smoothbore at 50 yds.Goes through
6" block of wood easy/

Buckshot load in 4bore, 9 140gr 45cal balls at 1800,
all zip through 3/4" OSB and keep going.
In 4bore 760gr steel ball zips through 12" block of wood.
going over 3200 fps. Wood is dried hard poplar.

In 10ga 3.5" plastic case, a 900gr hardcast slug at 1800
fps, through same kind of block easy. This slug I put
on a screwed on base with plastic seal and wad.
I've also put plastic seals and fiber wads on 8ga
slugs to test later..These 8 and 10 ga slugs with
seal and wads locked on to them are for smooth bore
use. My 10ga and 8ga are smoothbores.

12ga 600gr hard slug at 2100 zips through 12"
wood block like it was putty.In a 3.5" RMC
case in NEF.

Anyone wanting one of my loaded 585HSMs to
collect or look at, let me know. 750gr
slug in this at 2800 in Enfield test gun.
Soon have barrel in PH and put the real
speed to it. About 33-3400.

Will soon have the heavy 20 ga barrel mono-blocked
into the 12ga barrel setup on the CBC break action.
Make a nice looking gun. Also going to put the 8ga heavy
barrel I had in Enfield for testing into falling block
built like the 4 bore one.Maybe done by summer.
Will be in one piece stock like 4bore.Ed