I heard somewhere that if I shoot 2 3/4 slugs in my 3 inch remington slug barrel (or any slug barrel) that I could damage the end of the chamber. Does anyone have any information on this subject? Went to wal-mart today to look for slugs and they wanted 16.00 for a box of 3 inch slugs with 5 rounds compared to 10.00 for a box of 2 3/4 with 15 rounds.