Awhile ago I bought some new speer primed brass in .454 Casull. I noticed a small line of some kind of glue/sealant on the inside of the brass just below the mouth. Any idea of what it is and where I can buy it?
Speer .454 brass
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I'm pretty sure this material is to keep the bullet in place longer to aid in consistent ignition. Lee Jurras mentioned that he used this technique when loading H110/WW296 under his 180gr JHPs in Super Vel .44 Mag ammo. Side benefits would certainly include preventing crimp jump and acting as a sealant. I don't know where you can get the material. You could call Speer, although I think it might be real messy and hard to apply consistenly by an individual.
Several years ago, I bought 500 of those same Speer Primed .454 cases from Midway for right at $100 delivered. They drove me crazy at first (until I noticed the sealant) the cases would seize up on the expander/powder funnel on my Dillon 550. I solved the problem by using the .44 Mag powder funnel.
Loaded with 300gr Horn XTP Mag HPs and H110, they shoot real good in my 6" FA83 FG -- center group (shot from rest with 4x Leupold to verify previous groups).
Paul
Several years ago, I bought 500 of those same Speer Primed .454 cases from Midway for right at $100 delivered. They drove me crazy at first (until I noticed the sealant) the cases would seize up on the expander/powder funnel on my Dillon 550. I solved the problem by using the .44 Mag powder funnel.
Loaded with 300gr Horn XTP Mag HPs and H110, they shoot real good in my 6" FA83 FG -- center group (shot from rest with 4x Leupold to verify previous groups).
Paul
OP
Nice target! I posted for that exact same reason. I have loaded just about every .454 brass avaliable and the speer brass gave outstanding accuracy. The only reason I could come up with was the ring of sealant on the brass. It messed up my expander die as well until I figured it out. Wish I could buy more...
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