It's not attributed, but the article kind of looks like an early Seyfreid article. Here's a much later Seyfreid article on the same subject, fro Handloader. https://www.docdroid.net/udgc/june-1989.pdf
It's really a neat subject. A friend of mine is trying to buy the plans for the long discontinued LBT Softnose Caster. I hope it works out for him. I want one, even though we could simply reverse engineer them, he wants the original version.
The second article got me started casting. I finally got in touch with Trammco and they told me their machined dipper had been sold out for years, I cast for 3 years before I met another caster and cringe when I remember my mistakes. Shooters board was a Godsend.
This is a really neat idea! As the article stated. . .this would be the PERFECT bullet! I'm just wondering how precise/repetitive one could be making bullets that performed with on target accuracy. With my .44 and .45 caliber bullets and med./lrg. game I hunt, those size holes in and out work good (bigger could be better going out though), but where I think this would really shine is in my 30/30 Win loads. I may just have to give this a whirl. Thank you for the article, it was an interesting read.
I pretty much thought the 'labor intensive' would take from any gain? I agree with Ric that HP's are better and will add at handgun velocities. Actually you have to balance the alloy, the speed, and the bullet shape to velocity.
Most cast their hunting bullets too hard. Many would be surprised how fast one can shoot soft. When you cast for hunting you have to balance 'shear'... you want a mushroom not a shed of bullet material in big game. Varmints dance to a different tune! The butter soft nose on a hard alloy body will enhance 'shear'...at rifle velocity impacts. The soft will smear and shear off leaving you a wadcutter to carry on. How do I know? I come off the keyboard and test! I've shot tons (OK hundreds of pounds!) of wet paper tests and followed up on big game. I've done enough to predict the outcome pretty good. If you balance the alloy, the speed, and the bullet shape to velocity perfectly for operating speed you get another phenomena ...... Downrange impact speeds will show a rivet mushroom!. Maybe the ultimate WFN! I've attached a .38-40 bullet test showing full speed, downrange speed and then game. This is the 'balance' of which I speak.
Exactly, Pete. Got to 'spearment until you get it right, and there's a lot more to it than bhn. For the cartridge in your example, I believe you have achieved perfection.
Above about 2200 fps, bullet shape ceases to matter much unless you want hp varmint grenades. For meat animals, the alloy which will stay together without shattering will generally mushroom nicely no matter if it's a spitzer or flat nose.