29 January 2014
John Alexander wrote:
Ken Campbell Iowa wrote:
oh yeah ... anybody know why paper patches work ... not what but HOW ? i got the Mathews books ..
but 2600 fps with a dead soft alloy and a paper wrap ? .... paper stops gas blow-by ? ... paper stops bullet slump , even from dead soft lead ? ..
hey, maybe paper cleans the barrel each shot .. like COW .. there are similarities, ya know ::: both allow improvements in velocity, but neither shoot 1/2 moa ... a clean barrel usually throws the first shot, ya know .. maybe a dirty paper patch ( a dirty COW ??? ) ...would be interesting ..
would a big long paper wad crammed behind the bullet do the same thing ?
i have used ” reversed ” paper cups i cobbled up behind the bullet ... but also reversed plastic cups ... gee, didn't try for 2600 fps ... make a note to self ... i remember andy barniskis also played with reversed regular copper checks
paper patches call my name, but then don't talk to me ...( g ) ..
This thread has been the best short discussion of PP bullets that I have ever read by shooters who have obviously made it work. There is absolutely nothing wrong with doing what shooters did in 1880 and getting the same good results which are plenty good enough for practical use ie hunting. However, the fact remains (until proven otherwise) that the very best cast bullet accuracy is obtained with bare bullets. People show up at the CBA nationals who have used PP successfully but they bring bare bullets to win.
Ken has raised interesting questions. HOW does it work. How can pp bullets be improved still more to make them competitive with bare bullets (maybe by taking advantage of the higher velocities possible with pp?) OR if we understood the fundamental reasons PP works we might be able to apply it to other cast bullet shooting techniques and raise the bar for what is the best accuracy.
Worth thinking about.
Yes, John, it has been a good discussion and it's up to we modern shooters, to get the most from our available technology and equipment. After all, the PP shooters of old, didn't have all the modern powders, solvents, lubes, etc, to use, otherwise they would have developed accuracy to a higher level.