New alloy
- Thread starter Brad
- Start date
F
freebullet
Guest
Interesting. Do you ever get slumping or puddles at 450? That's quite a jump and useful range. Thanks, I look forward to seeing longer term results..
Melting linotype is fun, it just melts so fast.
Melting linotype is fun, it just melts so fast.
Lino? Did someone say lino? 450 degrees will be too hot for you to try heat treating them. Lino melts at 464 and if your oven thermostat is off even a little (they all are) and the temp fluctuates even a little (they all do) you will have puddles not bullets. Add to that lino is eutectic meaning no slump stage, liquid at 465.
Last edited:
I don't know how much hotter I could go with this stuff. I suppose there is only one way to find out?
Rick, thermostats are old school. I have a spare thermocouple thru the side of the oven so I control temp with my PID. Temps doesn't gary more than a degree or two at first then settles down to precisely the set temp
And people cast bullets from Lino? Seems like a waste of good sweetening alloy to me.
Rick, thermostats are old school. I have a spare thermocouple thru the side of the oven so I control temp with my PID. Temps doesn't gary more than a degree or two at first then settles down to precisely the set temp
And people cast bullets from Lino? Seems like a waste of good sweetening alloy to me.
F
freebullet
Guest
Pid-Lol. I know it and haven't done anything about it yet. When I build one it will not be lee'esk.
Please stay off my berms.
I learned early on that straight lino leaves an interesting antimony wash lining in your bore. It's been a sweetener since then. Brads 450 heat treat just made me think of how purty a pot of melted lino is and how easy it melts.
Please stay off my berms.
I learned early on that straight lino leaves an interesting antimony wash lining in your bore. It's been a sweetener since then. Brads 450 heat treat just made me think of how purty a pot of melted lino is and how easy it melts.
It is pretty. Something about a Eutectic alloy like that. The instant freeze is kind nice too.
This 5#mono/50#range scrap alloy is most decidely not Eutectic. It has a hell of a slush phase. If I don't let the bullet cool in the block for long enough it breaks bits off when droppng from the mould.
This 5#mono/50#range scrap alloy is most decidely not Eutectic. It has a hell of a slush phase. If I don't let the bullet cool in the block for long enough it breaks bits off when droppng from the mould.
F
freebullet
Guest
200....your slacking.
I hope you still share your results though.
I hope you still share your results though.
Warren4570
Active Member
just want to say hi to start and that I have enjoyed what I have read so far in all of the threads.
I am particularly interested in how the copper enriched alloy performs as I have been looking at alloy compositions similar to it but also considering the additon of a bit of arsenic into the mix. Mainly as an added grain refiner and for hardening.
Very curious about the toughness of the copper enriched alloy and its application to a hunting bullet.
Not looking for too high of a BHN# mayber 18 to 20 but something that can hit bone hard in an elk or moose sized animal and not come apart
seems like most commercial casters here in canada like the rotometals hardball 92 6 2 type alloy to cast with.
Lower animony content yet hard and tough is what I am seeking out
I am particularly interested in how the copper enriched alloy performs as I have been looking at alloy compositions similar to it but also considering the additon of a bit of arsenic into the mix. Mainly as an added grain refiner and for hardening.
Very curious about the toughness of the copper enriched alloy and its application to a hunting bullet.
Not looking for too high of a BHN# mayber 18 to 20 but something that can hit bone hard in an elk or moose sized animal and not come apart
seems like most commercial casters here in canada like the rotometals hardball 92 6 2 type alloy to cast with.
Lower animony content yet hard and tough is what I am seeking out
Last edited:
Warren4570
Active Member
The intended usage for the alloy will be 300 gr lee 452 cast for my 454 cassul and 360 and 420 gr cast for my 45-70. Aiming for 1600 - 1800fps at 100 yds with the 45-70 and about 1450fps out of my 454.
The cast bullets for the 45-70 will hopefully be around .350 to .360 for the metplat size.
I am not casting yet.... still in the process of gathering info learning and sourcing out the biggest item of all ..... alloy or base materials to make the alloy from.
curious though ...
Did you / can you use a bottom pour pot with the copper content you have in the alloy you mixed up ?
The cast bullets for the 45-70 will hopefully be around .350 to .360 for the metplat size.
I am not casting yet.... still in the process of gathering info learning and sourcing out the biggest item of all ..... alloy or base materials to make the alloy from.
curious though ...
Did you / can you use a bottom pour pot with the copper content you have in the alloy you mixed up ?
I used a Rowell ladle. The copper tends to gum up flow so it needs to be run pretty hot in order to let a bottom pour flow well.
I have shot 2 black bears with a range scrap, water dropped, plain base in my Marlin 45-70. Velocity was around 1600-1650.
Go lower Sb alloy and heat treat. It might rivet or expand a bit but it won't come apart.
I have shot 2 black bears with a range scrap, water dropped, plain base in my Marlin 45-70. Velocity was around 1600-1650.
Go lower Sb alloy and heat treat. It might rivet or expand a bit but it won't come apart.
Warren4570
Active Member
Good to know thank you
I noticed you had mixed about 3% each Sb Sn. Beartooth blends at about that point and from what I have read that is kind of a sweet spot for Sb in a lead alloy ( from a few university article and some data from the LASC site)
Have you made any other Cu enriched alloys with a lower Cu content say .05 or so?
Reading some of the other stuff I have come accross on the subject seems to indicate that even lower Cu content creates a bullet that is very tough and yet retains its maleability and ductility. Yet in one description of a hammer test it was pounded flat with little to no edge tearing. That adds some nice properties if indeed the report was true.
What though other than toughness does Cu give you in a alloy? Less leading ? higher impact strength ?
I noticed you had mixed about 3% each Sb Sn. Beartooth blends at about that point and from what I have read that is kind of a sweet spot for Sb in a lead alloy ( from a few university article and some data from the LASC site)
Have you made any other Cu enriched alloys with a lower Cu content say .05 or so?
Reading some of the other stuff I have come accross on the subject seems to indicate that even lower Cu content creates a bullet that is very tough and yet retains its maleability and ductility. Yet in one description of a hammer test it was pounded flat with little to no edge tearing. That adds some nice properties if indeed the report was true.
What though other than toughness does Cu give you in a alloy? Less leading ? higher impact strength ?
Warren4570
Active Member
by the way .. that hollowpoint design you cast and posted pics of is nice. The 3 crimp grooves would give you some definate load versatility