The low barrel weights are possible because 2" is low pressure cartridge. Matter of fact original 3/4oz load had to be increased to 7/8oz to increase pressure and obtain proper combustion of power translating into good results. The 28" barrels of old Beretta O/U weigh 2.9lb, but there is big difference between $600 and $5000+ and cartridges for Italian gun can be purchased at every small town Walmart.