Checking Lead Hardness With Drawing Pencils - Cast Bullet Forum
2019年6月27日 · The hardness of art pencils is controlled very strictly, and they are designated by a letter-number combination. The scale runs from at less than 6B (VERY soft) and gets slightly harder with each step up, going to 5B, 4B, 3B, 2B, B, HB, H, 2H, 3H, 4H, 5H, 6H, 7H, 9H, 10H, 11H and 12H that I know of.
25:1 lead/tin. What Brinell.? - Cast Bullet Forum
2015年9月12日 · Tin has little effect on the hardness of bullet alloys when they are so close in Tin content and no Antimony is present. Your Lee Hardness test should show a 0.097” imprint size for BHN 9. You should not be able to tell the difference between 25:1 and 30:1 through the use of your Lee Hardness Test Kit.
Lyman #2 - Cast Bullet Forum
2013年2月10日 · The 5% tin and 5% antimony with 90% lead in Lyman #2 has been the most popular hunting alloy for cast bullet shooters for well over 100 years because it has a very optimized mix of hardness and ductility for bullets that only need 1,000 foot pounds impact on game animals for double caliber expansion and 100% weight retention of bullets as they ...
Heads Up...Hardness Testing - Cast Bullet Forum
2008年5月1日 · One of the castboolits forum members is conducting a large scale test of hardness testers. He has recruited 49 forum members to perform hardness testing on 10 sample bullets he sent out. I'm one of the testers, and received my sample bullets today. He has asked that we all do our testing on the same day (May 10) to insure that aging is not a ...
What Brinell hardness for .357 Magnum loads - Cast Bullet Forum
2021年5月14日 · Learn from CBA members that have been casting their entire life. Have a question? Look for your answers in our Forum and in our bi-monthly publication the Fouling Shot. The CBA is a international organization of shooters who enjoy casting and shooting lead alloy bullets for competition, hunting, experimenting, and casual shooting. 1.865.310.4725
Hardness Testers - Cast Bullet Forum
2013年2月27日 · frnkeore wrote: I've never owned a store bought hardness tester. What I use is a steel ball (can be any size from 1/4 to 3/4")and a known ingot of pure lead (hardness of 5 BHN) about the size of the test sample. You just press the ball between what you want to test and the known pure lead sample and run this formula.
Alloy BHN - forum.castbulletassoc.org
2019年6月29日 · The common lead hardness testers (Lee, SAECO, LBT, bathroom scale-Brinell) will be accurate for our usage. The question is the degree that each is repeatable. I have found these to be repeatable enough for my usage, but there is a bit of an art included. The bullet caster needs a repeatable tool and needs to use it the same each time.
lead hardness tester - Cast Bullet Forum
2006年12月5日 · 454PB wrote: Ed Harris wrote: I use a hardness tester made by Tioga Engineering which fits into my reloading press. It uses a calibrated spring and 10mm ball to apply a load to the sample and you read the diameter of the indent using a 10x magnifier with a calibrated vernier eyepiece, then take the BHN from a tarrage table.
Do I need a hardness tester? - Cast Bullet Forum
2013年11月10日 · Longone wrote: joeb33050 wrote: A hardness tester is as useful to a bullet caster as a bicycle is to a fish. Interested in buying some really hard lead? Longone. He buys all his really hard lead at the plumbing supply house. They use the same alloy for sealing old cast iron drain pipe. Brodie
Lead Hardness??? | Springfield XD Forum - xdtalk.com
2008年2月11日 · Lead Hardness??? Jump to Latest Follow 5K views 7 replies 6 participants last post by