Equalizer

[outlawjw]

Do any of our members or guest have any idea about what could be used as packing on top of powder , between bullet & powder , to make every case full & almost compressed even though the inside volume is different.
Hoping this would give an even pressure build & more consistent velocity , just as when you fill cases of the same volume to full.
Loading for one calibre & gun. ?

 

[ReloaderFred]

Case fillers have been used for well over 100 years, but for specialized loads. You have to work up your load from the beginning when using a case filler, not just add it to an existing load. You're reducing the case volume when adding the filler.

I use Winchester Super Grex, which is no longer sold to the public by Winchester, for a case filler on selective loads, and I believe Walkalong also uses it. It's simply very finely ground plastic material that's used for shotshell buffer for premium shotgun loads, and a similar material is available from a couple of shotgun component suppliers.

Some people use wadded up Kleenex, and some use a tuft of Dacron fiber, and even cornmeal or Cream of Wheat. There are caveats to using case fillers, and one is the danger of "ringing your chamber", which means causing a ring to be formed in the chamber from the pressure increase due to the filler. The other problem is increased pressure, like I mentioned above, from reducing the case volume.

There are volumes written on this subject, along with the pros and cons, which I suggest you consult before adding a case filler to your loads. It's more complicated than just dumping something in to take up empty space under the bullet, and there can be serious consequences if it's not done properly.

Hope this helps.

Fred

 

[stoky]

Kapoc and dacron are some of the traditional fiber materials. Some fill the empty space with oatmeal. I once used some 28ga vegetable fiber wads w IMR4198 in some .45-70 loads. They shot pretty well, but were a PIA to load and smelled like burning hair after firing.
What you don't want to do, is leave a space between the top of the wad and the bullet, it's (in)famous for making a ring in the chamber.

 

[outlawjw]

Thanks Fred , I will use the caution & read deeply before I attempt such an undertaking.
Sticky thanks also , that reinforces Fred's warning . I will do a lot more homework before making a decision .

 

[Sunray]

You only do that if the cartridge calls for it. And it's about keeping the powder, usually black in big cases, close to the primer hole. Not for fiddling with pressures.

 

[ants]

I've only used it in 45-70 where the data calls for it. I used Kapok.
Cheap and works perfectly. Never had a problem, but 45-70 is low pressure.

Me, personally, never happened to need it yet in modern cartridges so I haven't experimented.
I'd have to spend a lot of time reading and researching first, like outlawjw says. He knows.
This thread is probably his first step in his research. Let us know what you find.

 

[dgod]

1/4 sheet of Toilet Paper, gently tamped. Smells nice when fires, and looks like a small snow has started. I use it on Suppressed, rifle rounds wen using Trailboss, so I get a full case and don;t have to be concerned with power shift away from the primer.

Good Luck,