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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Black crap on Berger Bullets
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<blockquote data-quote="Bullet bumper" data-source="post: 661349" data-attributes="member: 17844"><p>You are right mate any kind of bonding can have some leakage or corrosive elements at the meplat . I bond some off mine with the " heat gun , solder process " using Bakers flux ( Zinc Chloride ) on the core and inside the jacket. It can be difficult to completely remove the flux residues from inside the jacket before , core seating takes place . If you don't get it all out it tends to squeeze forward on point forming . Even after final washing it can still start some corrosion around the meplat after long storage if it has not been properly removed . Shooting them quickly is no issue though but it can also be an issue for moly coating as it may look patchy around the meplat. Only cosmetic really as that part does not touch the barrel but still can look bad. Presentation is important. I brush the inside of the jacket and the surface of the core to break up the flux residue and then tumble in Med Tech solution . It is an Acid based medical instrument cleaner that seems to get it out with agitation , however it is not perfect so I am going to experiment with ultra sonic cleaning also . as I feel that might be the ticket in this case .</p><p>Another trick I use on core bonded bullets is to place a small amount of colored nail polish in the meplat to seal the core in and prevent any corrosive element from reacting with Oxygen or moisture in the air . This also serves to identify the corbonded from no bonded bullets. No ! I don't paint my nails .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 661349, member: 17844"] You are right mate any kind of bonding can have some leakage or corrosive elements at the meplat . I bond some off mine with the " heat gun , solder process " using Bakers flux ( Zinc Chloride ) on the core and inside the jacket. It can be difficult to completely remove the flux residues from inside the jacket before , core seating takes place . If you don't get it all out it tends to squeeze forward on point forming . Even after final washing it can still start some corrosion around the meplat after long storage if it has not been properly removed . Shooting them quickly is no issue though but it can also be an issue for moly coating as it may look patchy around the meplat. Only cosmetic really as that part does not touch the barrel but still can look bad. Presentation is important. I brush the inside of the jacket and the surface of the core to break up the flux residue and then tumble in Med Tech solution . It is an Acid based medical instrument cleaner that seems to get it out with agitation , however it is not perfect so I am going to experiment with ultra sonic cleaning also . as I feel that might be the ticket in this case . Another trick I use on core bonded bullets is to place a small amount of colored nail polish in the meplat to seal the core in and prevent any corrosive element from reacting with Oxygen or moisture in the air . This also serves to identify the corbonded from no bonded bullets. No ! I don't paint my nails . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Black crap on Berger Bullets
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