10 January 2008
Ed Harris wrote:
"In truth, I prefer a flat nosed bullet like the old style RCBS 30-180-FN and I am very picky about my shot.~"
I fully agree! Most of the deer I have killed with CBs have been with this RCBS bullet. I've used it in a variety of calibers, .30-30, .30-40, .30-'06. But I use another approach to get expansion, that of heat-treated, VERY diluted WW alloys. Try only 1 pound of wheelweights blended with 4 pounds of plumber's lead, and leave them for a long soak in the oven, 6 hours at 475 degs. F, to ensure that every wee bit of Sb is in solution before water-quenching them. After the quench immediately take the wet bullets, place them in a Ziploc bag and throw them in the freezer for 14 days to accelerate the aging. Diluted WW will harden to about 16-20 BHN depending upon how effective your quench is. These are then GC'ed and lubed, and can be driven to over 2000 f.p.s. in a smooth barrel. This method makes it easy to generate several hundred to do careful load development and do some expansion testing. In the .30-30 my loads approximate the .303 Savage, the bullet weighing about 190 grs. and 30 grs. of RL-15 driving it just shy of 2000 f.p.s. In the .30-40 Krag I use 38 grs. of RL-15 for about 2100. In the '06 I use 44 grs. of RL-15 for about the same velocity.
I typically “double-lube” these by filling the lube grooves with 50-50 Alox Beeswax, then giving the entire bullet a light overcoat with either Lee Liquid Alox, which has been diluted 50-50 with mineral spirits, or Rooster Jacket.
These bullets can stand higher velocity than straight WW, but are very ductile and give classic double-caliber mushrooming above 1700 f.p.s.Ed:
I was re-reading some of the posts here and decided to give your method a try as I am aiming to come up with some heavy-bullet loads for my 8x57J Jager Rifle and my 303 Brit Express rifle. Both will be 170+ grain bullets used for brush shooting whitetails.
Thanks for the post!