sniper-66
| Joined: | Tue Nov 6th, 2007 |
| Location: | Topeka, Kansas USA |
| Posts: | 89 |
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Yes, some factory ammo is sealed. You can usually tell by the colored laquer sealant around the primer, Winchester is the most common. Some companies utilize laquer sealant around the bullet which is another method, but I don't like it because if you don't do it right, it can lead to too much laquer, a hard seal and dangerous pressures. When you use asphaltic tar, as the bullet is pushed down into the case, the base of the bullet scrapes away what is not needed, only what is necessary to fill in the imperfections of the case mouth and bullet is used. The rest is a ring around the base of the bullet. When the powder is ignited the asphalt is burnt and evacuated with the gases as ash out the bore. Laquer around the bullet canular can leave traces in the chamber, melted and left there and I'm not sure I want a deposit left in the throat of my chamber, however, the AK ammo has been doing it for years. Guess just preference.
I only do this to ammo that I plan on storing for many years, or hunting ammo that i know is going to be put through repeated heating and cooling cycles over a few years. If you do the water test as I said earlier and watch how much air is evacuated out of a case when it gets hot, then realize that much has to go back in when it cools off, then in a humid environment may cause a malfunction that you don't want or can afford. I hope that helps.
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