bhale187 said:
bonded is fine, it's just 'uncovered' lead that Glock tells you not to use in the hexagonal barrel
That's not entirely true. Bonded means the copper jacket is bonded to the lead via some manufacturing method instead of lead just being poured into the copper jacket.
Bonded rounds maintain the weight better in ballistics tests. Un-bonded rounds can (but not always) separate: the lead and jacket come apart, starting with the abrasion in the barrel and ending up separated during impact.
The separation reduces the full weight of the projectile effectively reducing the force the round has when tearing through tissue, resulting in a lower quality ballistic test result.
FMJs and JHPs can be bonded, exposed lead does not mean its bonded.
Now, does Glock says NOT use bonded? I've never heard that.
I have read in the users manual where Glock says not to use lead rounds in their stock barrels. So if any part of the round has exposed lead that would come in contact with any part of the barrel...
Do not use it.
That does not mean JHP's where you can look into the hollow and see lead, that lead won't touch the barrel.