Harve Curry
Member
Cartridge Case Fillers, info requested?
What is the latest data and type of cartridge case fillers?
What loads if any do you use?
1). corn meal
2). cream of wheat
3). Poly fiber fill ( kapok)
4). PTFE/teflon powder
5). shot buffer (granulated plastic)
The advantages I have found were velocity variation of only 10fps or less,
and excellent accuracy, and keep pressure down.
The only 2 fillers I've used are poly fiber fill and corn meal in 45-70,
and 50-70, and 45lc cases. Not in any bottle neck type cases.
Cases with corn meal I always ad the weight of the corn meal to the bullet weight in consideration of the powder charge.
The corn meal is compressed on top of the powder charge, it has to be.
In poly fiber fill I use enough to be slightly packed but still "airy". The accuracy improvement will be several inches smaller groups.
With poly fiber fill I believe I have avoided the "ringed chamber or barrel" because I keep the pff compact and didn't carry them around bullet nose down to where powder would sift into the pff and create a secondary detonation and hence a ringed chamber.
What is the latest data and type of cartridge case fillers?
What loads if any do you use?
1). corn meal
2). cream of wheat
3). Poly fiber fill ( kapok)
4). PTFE/teflon powder
5). shot buffer (granulated plastic)
The advantages I have found were velocity variation of only 10fps or less,
and excellent accuracy, and keep pressure down.
The only 2 fillers I've used are poly fiber fill and corn meal in 45-70,
and 50-70, and 45lc cases. Not in any bottle neck type cases.
Cases with corn meal I always ad the weight of the corn meal to the bullet weight in consideration of the powder charge.
The corn meal is compressed on top of the powder charge, it has to be.
In poly fiber fill I use enough to be slightly packed but still "airy". The accuracy improvement will be several inches smaller groups.
With poly fiber fill I believe I have avoided the "ringed chamber or barrel" because I keep the pff compact and didn't carry them around bullet nose down to where powder would sift into the pff and create a secondary detonation and hence a ringed chamber.
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