Not very scientific ... (no scale)
I have a first gen. 12.5 Grizzly with Wilson sights on it. Pulled the barrel and even with the few extra ounces from the sight ... compared to a 14" Remington with bead sight the Grizzly certainly feels a bit lighter. And there's no doubt at the muzzle the Grizzly is thinner than the Remington which will account for some weight savings.
Also, with the happy cap you should be able to get 5 rounds into your 12.5" setup vs the usual 4.
I have a first gen. 12.5 Grizzly with Wilson sights on it. Pulled the barrel and even with the few extra ounces from the sight ... compared to a 14" Remington with bead sight the Grizzly certainly feels a bit lighter. And there's no doubt at the muzzle the Grizzly is thinner than the Remington which will account for some weight savings.
Also, with the happy cap you should be able to get 5 rounds into your 12.5" setup vs the usual 4.



















































