Posted: 9/24/2016 9:12:45 PM EDT
So if the lead slug comes out at .439 should I size the bullets to that diameter or slightly bigger?
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M1879 Argentine Remington Rolling Block rifle in .43 Spanish Quoted:
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Nearly certain that's your go-to size, and the size you should be making your boolits. If accuracy sux, bump it up .001" Inflammation about the gun?  Looks like a hot project!  M1879 Argentine Remington Rolling Block rifle in .43 Spanish Wow, that's an obscure one.  Just did a quick Bing, not much info.
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Wow, that's an obscure one. Just did a quick Bing, not much info.Quoted:
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Nearly certain that's your go-to size, and the size you should be making your boolits. If accuracy sux, bump it up .001" Inflammation about the gun? Looks like a hot project! M1879 Argentine Remington Rolling Block rifle in .43 Spanish Wow, that's an obscure one. Just did a quick Bing, not much info.I actually ended up with 2 of them one is in amazing condition and the other is very good but I've read some of these were converted to another bullet size "Reformado" .454 in dia., vs. .439 So I need to slug the barrel on both of them before I pull the trigger on a mold. This seems to be the correct one for .43 Spanish Lyman 1-Cavity Bullet Mold #439186 43 Spanish (439 Diameter) 370 Grain Round Nose |
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Black powder or smokeless? Hard cast or soft?? Black will obturate a slug where smokeless will not. General rule is 0.001" over. I plan to use Black powder so I'm taking it really slow making sure I learn everything I just found out what a "Drop Tube" is. I have used muzzle loaders and reloaded smokeless pistol and rifle ammo but this is very different. I've read I need a 20 to 1 Lead - Tin Alloy for this bullet. |
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You're off to a good start. 20/1 is perfect. Lyman #2 alloy is good too. 90% lead, 5% tin, 5% antimony.
Since you're using BP, if your mould drops at .439" you'll still be OK. BP will bump it up to the bore. I have 2 Rolling blocks a Hi Wall and several levers in .45-70 and a Hi Wall and several lever guns in .38-55. I have been casting my own forever. You'll have a great time with that 43 Spanish! You'll do well using properly sized hard cast and unique also. Edit: see Sig line. |
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You're off to a good start. 20/1 is perfect. Lyman #2 alloy is good too. 90% lead, 5% tin, 5% antimony. Since you're using BP, if your mould drops at .439" you'll still be OK. BP will bump it up to the bore. I have 2 Rolling blocks a Hi Wall and several levers in .45-70 and a Hi Wall and several lever guns in .38-55. I have been casting my own forever. You'll have a great time with that 43 Spanish! You'll do well using properly sized hard cast and unique also. Edit: see Sig line. Thanks I've learned a lot from the "shooting the .43 Spanish rolling block" book. Here is a quick picture of both of them. Oh and I slugged the second rifle and it came out to .439 as well so that's good I can use the same bullet for both of them and only have to buy one mold. 
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Thanks I've learned a lot from the "shooting the .43 Spanish rolling block" book. Here is a quick picture of both of them. Oh and I slugged the second rifle and it came out to .439 as well so that's good I can use the same bullet for both of them and only have to buy one mold. http://s13.postimg.org/o7j90j4p3/IMG_20160926_110353.jpg Quoted:
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You're off to a good start. 20/1 is perfect. Lyman #2 alloy is good too. 90% lead, 5% tin, 5% antimony. Since you're using BP, if your mould drops at .439" you'll still be OK. BP will bump it up to the bore. I have 2 Rolling blocks a Hi Wall and several levers in .45-70 and a Hi Wall and several lever guns in .38-55. I have been casting my own forever. You'll have a great time with that 43 Spanish! You'll do well using properly sized hard cast and unique also. Edit: see Sig line. Thanks I've learned a lot from the "shooting the .43 Spanish rolling block" book. Here is a quick picture of both of them. Oh and I slugged the second rifle and it came out to .439 as well so that's good I can use the same bullet for both of them and only have to buy one mold. http://s13.postimg.org/o7j90j4p3/IMG_20160926_110353.jpg Shriek!!! That books' like $75 bux! 
Very cool bangstix, tho. I'd be happy to have them. 
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Black powder or smokeless? Hard cast or soft?? Black will obturate a slug where smokeless will not. General rule is 0.001" over. What makes you think smokeless won't obturate a bullet? Not that we're shooting Minne' balls. 
OP, use the flat of th caliper blades closest to the beam. Measure with the nose of the bullet pointing toward or away from the beam so you get the ist surface area contact. You stand a better chance at a more accurate reading. Its small but you deform the lead a little bit when you measure it. Yes, groove dia plus .001 is standard. That is providing your muzzle is same size as the rest. You can lap the bel with a poured slug on a one piece for and feel if the slug gets loose at a spot. |
