wheel weights vs 20-1

camerl2009
Posts: 4
Joined: Thu Sep 23, 2010 1:23 pm

wheel weights vs 20-1

Postby camerl2009 » Thu Oct 27, 2011 9:42 am

ok im making a mold for my martini henry mk 4 witch uses a .470 480gr bullet the only choice of alloys is wheel weights but i need 20-1 lead/tin

it has to be close enough to 480gr and .470-.472 as these guns where made for one load and the sights are not adjustable (only for yardage) how close will wheel weights get me to this if i use 20-1

User avatar
mtngun
Site Admin
Posts: 1626
Joined: Fri Feb 01, 2008 5:45 pm
Location: Where the Salmon joins the Snake

Re: wheel weights vs 20-1

Postby mtngun » Thu Oct 27, 2011 10:35 am

Sorry, my molds are not designed for black powder alloys. Please do not order a mold spec'd for wheelweight and then use it for a black powder alloy.

20-1 is nearly the same density as WW, but apt to cast a different diameter. 20-1 requires a smaller sprue hole.

camerl2009
Posts: 4
Joined: Thu Sep 23, 2010 1:23 pm

Re: wheel weights vs 20-1

Postby camerl2009 » Fri Oct 28, 2011 3:48 pm

this is a coustom mold makers website right 20-1 should be a choice this gun is picky on what you feed it and it likes 20-1

i need a flat point mold for hunting

User avatar
mtngun
Site Admin
Posts: 1626
Joined: Fri Feb 01, 2008 5:45 pm
Location: Where the Salmon joins the Snake

Re: wheel weights vs 20-1

Postby mtngun » Sat Oct 29, 2011 8:23 am

Mountain Molds does not claim to be a custom mold maker.

From the home page:
Cast bullet molds
-- you design your bullet using our online design program.
-- Specializing in molds for revolvers, lever actions, and high velocity rifle.

It doesn't say anything about "custom" or "black powder."

Thank you for your interest.

camerl2009
Posts: 4
Joined: Thu Sep 23, 2010 1:23 pm

Re: wheel weights vs 20-1

Postby camerl2009 » Sun Oct 30, 2011 7:37 am

ok then how to i adjust the wheel weight alloy on the design thing to cast a .470 480gr bullet in 20-1 the sprue plate and block material does not matter lee molds are aluminum and thay cast just fine with so called blackpowder alloys. even through 20-1 works well in revolvers

and making a mold to customers specifications is making a custom mold :roll:

User avatar
mtngun
Site Admin
Posts: 1626
Joined: Fri Feb 01, 2008 5:45 pm
Location: Where the Salmon joins the Snake

Re: wheel weights vs 20-1

Postby mtngun » Sun Oct 30, 2011 8:39 am

There is no predicable formula for as-cast diameter of a given alloy. Every mold and every bullet design behaves a little differently.

Sprue plate most definitely matters. WW requires a different sprue hole than BP alloy. A WW sprue hole will be extremely difficult to cut with BP alloys, distorting the bullet base, and putting a lot of wear and tear on the mold.

Lee blocks are much much smaller than my blocks -- which is a good thing, for BP alloys, which require a hot block. Lee blocks are also a different alloy that is not heat treated.

camerl2009
Posts: 4
Joined: Thu Sep 23, 2010 1:23 pm

Re: wheel weights vs 20-1

Postby camerl2009 » Sun Oct 30, 2011 10:19 am

so what to do then as i need a bullet mold made for this gun that will cast at .470-.472 and close to 480gr in 20-1 theres no other alloy i can use for this and its a hunting bullet going to be used on moose and bison so a flat point is necessary

i dont see that 20-1 is a bp alloy as many many people use it for handguns

User avatar
mtngun
Site Admin
Posts: 1626
Joined: Fri Feb 01, 2008 5:45 pm
Location: Where the Salmon joins the Snake

Re: wheel weights vs 20-1

Postby mtngun » Mon Oct 31, 2011 6:17 am

Well, seeing as you want a custom mold for a BP SSR application, and since there is a GLUT of custom moldmakers for BP SSR, I suggest you contact one of them and go from there.

Thread locked.

As I have said before, it is not the purpose of this forum to beg for custom work that we never claimed to do.


Return to “alloys”

Who is online

Users browsing this forum: No registered users and 2 guests

cron