Re: Grease groove bullet alloy
Posted: Wed Apr 24, 2024 10:06 pm
My targets indicates my 20:1 alloy results in good accuracy.
Many top notch Schuetzen shooters spent years testing differences in hardness of alloys for cast bullets and most people found a 20:1 or 22.5:1 or 25:1 was the best for their plain base cast bullets.
However it took years of testing to prove the minor differences between using the different alloys.
Unfortunately too many people have been lead to believe that a harder alloy is required to prevent leading.
However the base of too hard an alloy does not bump up and seal and gas can start penetrating around the side of the bullet that actaully causes the leading.
Actually softer alloys have less of a chance of leading than bullets that are too hard.
I can easily shoot a hundred bullets without cleaning my rifle using 20:1 lead:tin alloy using Alberta Schuetzen Lube even at 1,900 fps with either smokeless powder or black powder.
I started like everyone else using harder antimony alloys for the first 60,000 cast bullets I fired.
I was always getting leading within the first 30 shots when I used an antimony alloy.
Going to a softer lead:tin alloy I eliminated leading in my single shot rifles.
Many top notch Schuetzen shooters spent years testing differences in hardness of alloys for cast bullets and most people found a 20:1 or 22.5:1 or 25:1 was the best for their plain base cast bullets.
However it took years of testing to prove the minor differences between using the different alloys.
Unfortunately too many people have been lead to believe that a harder alloy is required to prevent leading.
However the base of too hard an alloy does not bump up and seal and gas can start penetrating around the side of the bullet that actaully causes the leading.
Actually softer alloys have less of a chance of leading than bullets that are too hard.
I can easily shoot a hundred bullets without cleaning my rifle using 20:1 lead:tin alloy using Alberta Schuetzen Lube even at 1,900 fps with either smokeless powder or black powder.
I started like everyone else using harder antimony alloys for the first 60,000 cast bullets I fired.
I was always getting leading within the first 30 shots when I used an antimony alloy.
Going to a softer lead:tin alloy I eliminated leading in my single shot rifles.