hubel458

In our 12ga FH testing at the higher speeds for slugs/buckshot, the BPGS (BPI's name for it) plastic seal gets us 100 to 150 fps more than card wads. It is a Gualandi wad. It is a one sided seal, where one side only is to go on the powder.And the top side of it fits a cushion wad as well as some wad cups. For open patterns there are spreader wads and wads cups. Ed

WE shot the plastic case with big buckshot, IE, 45cal lead balls at 140 gr each. One load 7 shot 980gr at 1800 fps.. Other load 9 shot 1260 gr, 1600 fps. Some case expansion, these are about maximum loads at peak pressure of about 12-13,000 psi, without case expansion ruining case. WE use slower than shotgun powders which is easier on the cases, but yet we use more for longer taller pressure curve, gaining some velocity. Interesting case,, It is a shame they don't have a metal base cup like the 8ga Kiln cases made here in US. Then they could handle 20,000 psi.Ed

I'm searching for the limits of what these plastic cases can be used for,and info gathered so far shows me that I will use it for shot, mainly light loads of buckshot at moderate pressures. I have all the wads and cards and shot. Circle Fly carries those items here in the states.Ed

Thanks for all the info, and derbyduck gave me a light shot load and indicated that is the best use, They deform and stretch. I will only test these as a 9 45cal buckshot load, which weighs under 3 ounces. These shot are 140 gr or about 9 grams each. And with our slow powder loads I'll slowdown some of the deforming, giving a little more use per case. My 4bore has a heavy smooth barrel, so I experiment with loads for smooth bore like hollow base slugs. Picture from the business end.Ed

Thanks all for info- I'll call Mr Myers. If I use these cases it would be roll crimped for card over buckshot or maybe crimped on the slugs. I have and/or can get all the wads and cards from Circle Fly here in US. These would go in my 1" bore chamber which is little bigger at the base; with 3 wraps of wide electricians tape on the base above the rim. My falling block will take any pressure the brass cases can hold. I know the plastic can't keep up with the brass, but maybe ideal for buckshot.What I use for buckshot is 9, 12, or 15 45 cal lead balls. Be great for deer and hogs.Ed

Fiochhi- that is interesting, I found these on Gunbroker and the guy didn't know anything about them. And no markings on them. At first I thought someone had left off the basecup.But the primer pocket is correct size. Maybe Myers will post here. Curious to know how heavy they are loaded.Ed

I'm a visitor here from Michigan, USA. I'm on of the guys that tested and experimented with the 12GA From Hell. This work has lead me and others into 8bore and 4bore work. I know some UK hunters use 4bores with shot. And I have a question. I got some red colored all plastic 4bore cases and need to know more about them and who makes them. They are 4" long, all plastic including base and rim, with no steel rim insert like Activ brand cases have. They are 1.040" at base ahead of the rim, and seem to hold a slug of about .935" to .950". With a .950" slug the mouth od is about 1.010" They are not the full 1 inch 4bore case, for my falling block, that we made m20mm brass or the identical turned 4 bore brass case that Ken Owen's doubles hold.Ours are 4" long. Any help would be greatly appreciated as well as load info. Ed Hubel