Quote:
|
Originally Posted by HOLLiS
There is a formula, Greenleaf??? something like that it establish bullet by length, to match the twist. Sence I don't make bullets and Bullets are sold by weights, I select the bullet by weight and then see which one works. A Hornday 225 grain may work better than a Sirocco 225 grain, I think for many of us, it is trial and error. Sence density and length are closely similar.. it is 6 of 1 half a dozen of the other which is getter. Gene, you way ahead on me on bullets, I don't swage. I was thinking of buying a .318 die to make bullets for my 88 Commission. It has always amazed me, how percise a person can get. I watch a guy go through shims, and he could feel the thickness. He would tell me the thickness of the shim pack, then use a caliper. He was 100%.
|
Hollis and those intrested in trivia of sorts. Here is a decent link for the Greenhill formula.
http://www.loadammo.com/Topics/July01.htm
I find this formula to be interesting and quite useful when swaging as I have jackets in different lengths and barrels with different twists. Best to use a jacket as close to the right length as possible of a bunch of time and money is wasted. Oh yes, jackets draw some when swaging. Doesn't have to be dead on the money but close.
My advice to guys who want to swge bullets is -- don't bother. You aren't going to make a bullet any more accurate than a commercial bullet and one will spend a huge amount of time tinkering until he finds the right mixture of core alloy, holding pressures, and other techniques. Dies are extremely expensive and for the odd ball calibers it may be impossible to find jackets. I figure if you want to swage lead bullets (no jackets) it is an easier proposition but you will end up using very soft lead and the bullet may lead the bore as a result.
My .02$.
Gene