Thread: Reasons to be wary of Others reloads

Originally Posted by 7mmsaum

Galvanic corrosion between dissimilar materials often causes the projectiles to “ stick” in the brass over time

The trick to getting them apart is put them in a seating die and seat them 5 thou deeper

They often “ crack” quite loudly before they move

Then try the inertia hammer or cam lock puller and they will come apart easily as you have broken the corrosive “ weld “

To avoid the corrosion in the first place and to help lower ES use graphite powder in the necks and on the projectile when assembling.

Problem solved

The most extreme case of this I believe was the US armies "tin can" 3006 of the late 20s. Tin was known to prevent and more importantly remove copper fouling, it is still used in artillery rounds in the charge bags. I also believe the same idea was reinvented and used in the cfe reloading powders, but I digress.
In an attempt to reduce copper fouling it was decided to tin plate the projectiles this evidently worked well initally. However on storage extreme pressure variations were found resulting in damaged rifles and individuals. It was traced back to cold soldering of the projectile to the neck, all the ammunition was withdrawn and the idea shelved.
Just an interesting historical aside to this thread.