The LaserCast bullets are a special case. Much has been written about them, including a lengthy article in a shooting magazine awhile back...forget which one...probably American Rifleman. It seems the fellows who cast these have a source of lead ore out West, which comes from what used to be primarily a silver mining area. As I recall, they were getting their first lead from some of the tailings, waste, from such a mine or mines because it was cheap. The "no leading" quality was an accidental discovery.
Years ago, I bought at Cabela's 500 of their 115 grain .313" bullets to use in my re-lined Winchester Low Wall .32-20 target rifle. On the box, the company unconditionally guarantees no leading at jacketed bullet velocities and mentions the silver alloy.
My experience is that they do what they say. I have had no leading at about the same velocities as M-1 carbine rounds, 1700 to 1800 fps. Would they lead at 2400 FPS or so? I don't know.
I like them a lot and use them sparingly, since prices have gone way up since I bought the first ones.
Will all their bullets be the same? Again, I don't know, as I have only used the little .32s. But if they all use the same lead/silver alloy, they should perform the same way up to whatever the velocity limitation is. My bevel base .32s have a single wide groove containing a blue lubricant of LaserCast's unknown recipe.
i cast my own boolits, but i have used lazer cast. i have never had a problem with leading there boolits are very hard, but i had some i used in my 696 that would not shoot well at all out of a gun that was a tack driver. i found that they were to hard. i don't know what the bhn was but if a boolit is to hard it will not grip the lands of a barrel. a boolit can lead for more reasons than being to soft. in fact my mix for hunting with cast is 50% pure lead and 50% ww bhn about 12 i use this in 30-30 and 32 win. special with very little leading at all after about 20 shots. i do use gas checks on the rifles but none on handguns. in fact if the boolit is the correct dia. the barrel is easyer the clean than when a copper jacket boolit is used. one of the main causes of leading is the boolit not being the correct dia. for the barrel that it is shot through. all barrels are not all the same. if the boolit is to small in dia. maybe one thousands or so, you will get gas cutting. in other words blow by of hot gas around the boolit and it will lead very bad even with a hard boolit. for cast lead, the barrel in which the boolit is to be used needs to have the barrel slug bored for correct dia. without knowing that you are shooting in the dark...... in other words the boolit needs to fit the barrel or you can get very bad leading no matter how hard the boolit is. that is why i roll my own.
