bigted
05-07-2013, 09:00 AM
as many know I purchased an old Remington roller in military form and chambered for 43 Spanish...[.439 caliber]...with a copious chamber dimension.
the quandary I find myself in concerns this large chamber...I know that before standardization of chambers there were some tight and also some generous dimensions. this was done for a couple reasons and I understand this but my question concerns my decision for loading this peach.
the over length and lose neck area in the rifle were to provide chambering in a hot and dirty rifle in battle....not with the re-loader in mind. which brings me to my slight conundrum.
I have filled the chamber length with 44-90 cases that I cut down and fire-formed to the chamber. the neck diameter is where the rub...[if any]...comes into play in my mind.
my fire-formed brass provides a generous neck ...[inside diameter]...of .454 inch. therefore I load a .452 diameter boolit and they fly straight and pretty true. I also paper patch a .444 inch slick to .450 and they seem to also fly straight.
so now at long last is the question for all nimble minded individuals here...what is the danger point in squeezing down a .452 inch slug into a .439 inch barrel...that's sizing down a full .013 inch to flow thru the barrel.
now my concern in retrospect is wondering how much pressure I am creating doing this...my loads are as follows;
1- smokeless = 22 grains 5744 with c/m filler to the point of having the boolit...[.452 inch x 407 grains]...slightly compress the filler with a cci large rifle primer.
2- black powder = 85 grains GOEX cartridge with the same boolit with a .060 veggie card between powder and boolit...compressed to the bottom of neck leaving the wad and boolit inside the neck area ... same cci prime.
3- smokeless = 22 grains 5744 with the same filler behind a buff arms 400 grain .444 wrapped up to .450 inch wet wrapped and again with the same cci prime and filler compression.
4- same black powder load behind the .444 inch patched boolit.
it all shoots well...[except the bp loads ... they are reluctant to perform without blow tubing vigorously between all shots].
the .439 inch boolits wont perform to my satisfaction hence filling the throat with lead. what say yee...I don't want to create a bomb nor do I wanna ruin a good ol roller ...:veryconfu...[smilie=s:...:shock:
the quandary I find myself in concerns this large chamber...I know that before standardization of chambers there were some tight and also some generous dimensions. this was done for a couple reasons and I understand this but my question concerns my decision for loading this peach.
the over length and lose neck area in the rifle were to provide chambering in a hot and dirty rifle in battle....not with the re-loader in mind. which brings me to my slight conundrum.
I have filled the chamber length with 44-90 cases that I cut down and fire-formed to the chamber. the neck diameter is where the rub...[if any]...comes into play in my mind.
my fire-formed brass provides a generous neck ...[inside diameter]...of .454 inch. therefore I load a .452 diameter boolit and they fly straight and pretty true. I also paper patch a .444 inch slick to .450 and they seem to also fly straight.
so now at long last is the question for all nimble minded individuals here...what is the danger point in squeezing down a .452 inch slug into a .439 inch barrel...that's sizing down a full .013 inch to flow thru the barrel.
now my concern in retrospect is wondering how much pressure I am creating doing this...my loads are as follows;
1- smokeless = 22 grains 5744 with c/m filler to the point of having the boolit...[.452 inch x 407 grains]...slightly compress the filler with a cci large rifle primer.
2- black powder = 85 grains GOEX cartridge with the same boolit with a .060 veggie card between powder and boolit...compressed to the bottom of neck leaving the wad and boolit inside the neck area ... same cci prime.
3- smokeless = 22 grains 5744 with the same filler behind a buff arms 400 grain .444 wrapped up to .450 inch wet wrapped and again with the same cci prime and filler compression.
4- same black powder load behind the .444 inch patched boolit.
it all shoots well...[except the bp loads ... they are reluctant to perform without blow tubing vigorously between all shots].
the .439 inch boolits wont perform to my satisfaction hence filling the throat with lead. what say yee...I don't want to create a bomb nor do I wanna ruin a good ol roller ...:veryconfu...[smilie=s:...:shock: