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CERROSAFE® CHAMBER CASTING ALLOY 1/2lb

CERROSAFE® CHAMBER CASTING ALLOY 1/2lb

CERROSAFE® CHAMBER CASTING ALLOY 1/2lb

 

CERROSAFE® CHAMBER CASTING ALLOY 1/2lb. Never Wears Out- Use Over And Over

There are various products on the market which can be used to make a cast of a gun chamber. To be certain that the product we are offering you is the best and most practical, we contacted the basic manufacturer. They recommended Cerrosafe because of its unique features. Unlike Woodsmetal which swells upon cooling and cannot be removed from a gun chamber, Cerrosafe shrinks during the first 30 minutes of cooling and then at the end of an hour, is EXACTLY chamber size. At the end of 200 hours it will have expanded approximately .0025″. This factor is well known by all toolmakers and they will take it into consideration when making dies or reamers or gauges from your cast – if you will tell them the cast is of Cerrosafe. Cerrosafe melts between 158° – 190° F. It should be melted in a clean, iron ladle. Source of heat should be removed as soon as the alloy is completely melted, at which time it is ready to pour. The solidified casting should be removed from the chamber before, or when, it cools to room temperature. If allowed to remain in the mold over an hour, it will grip the chamber walls and be difficult to remove. Clean the chamber of the rifle thoroughly, then plug the bore immediately ahead of the throat with a small rag – but not so tightly it cannot be driven out. If possible, pour the molten Cerrosafe through a small tube into the bottom of the cast, gradually removing the tube as the chamber fills. If the barrel is cold, warm it to room temperature or above before making the cast. When cooled, remove from chamber, using a rod or dowel from the muzzle end of the gun.
National Metallic
Manufacturer

11 950 Ft

6 in stock

WORLDWIDE SHIPPING CALCULATED AT CHECKOUT

CERROSAFE® CHAMBER CASTING ALLOY 1/2lb

 

National Metallic Chamber Casting Alloy is the best known material from which to make a casting of the chamber and throat of a firearm - to determine caliber or check the dimensions. It melts at a temperature just above 158*F so all you need is a propane torch and a bullet casting ladle. It can also be used to make a cast of a dovetail slot or any other hard to measure area. Also, it is great for removing the front half of a case from the chamber, in the event of case head separation; and lots of folks cast a small portion of the barrel to determine bore diameter. For best results, measure the casting one hour after casting. Contains 42.5% Bismuth, 8.5% cadmium, 37.7% lead, 11.3% Tin.

Notes:
Plug the bore immediately ahead of the throat of the chamber using a small cleaning patch.

Pour the alloy directly into the chamber until full and allow it to cool, it will turn a shiny silver color. As soon as it has cooled enough that it is no longer a liquid (and doesn't present a burn hazard), remove it from the chamber. Take care not to overfill the chamber as the alloy will then run into the locking lug area, making removal extremely difficult. (The chamber being cast should be cleaned thoroughly and a thin coat of oil or graphite applied).

During the first 30 minutes of cooling the alloy shrinks. At the end of one hour it should be "exactly" chamber size.Contraction - Expansion Factor VS. Time:

  • 2 minutes -.0004"
  • 6 minutes -.0007"
  • 30 minutes -.0009"
  • 1 hour +-.0000"
  • 2 hours +.0016"
  • 5 hours +.0018"
  • 7 hours +.0019"
  • 10 hours +.0019"
  • 24 hours +.0022"
  • 96 hours +.0025"
  • 200 hours +.0025"
  • 500 hours +.0025"

 

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