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**44 AMP** · March 11, 2013, 10:33 PM

overlength brass can extend beyond the chamer, into the barrel, where there is not enough room for the brass to expand and release the bullet. This means higher pressures, and can be dangerous.

A max length case should chamber and fire ok, BUT since there are tolerance differences between chambers, we trim the brass to ensure safety in all chambers.

New brass nearly always stretches (and stretches the most) on its first firing. It may not strech again for seveal firings, or it may stretch a bit each time. Your loads, and the fit of your chamber and sizing die are the major factors in this.

March 11, 2013, 10:33 PM	#8
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,811	overlength brass can extend beyond the chamer, into the barrel, where there is not enough room for the brass to expand and release the bullet. This means higher pressures, and can be dangerous. A max length case should chamber and fire ok, BUT since there are tolerance differences between chambers, we trim the brass to ensure safety in all chambers. New brass nearly always stretches (and stretches the most) on its first firing. It may not strech again for seveal firings, or it may stretch a bit each time. Your loads, and the fit of your chamber and sizing die are the major factors in this. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.