I believe that was the point of the LRWF



This is a HSB catalog page from 1923 with the same "designed to handle the heavy charges of modern propellant powders". Western Cartridge Co. introduced the 12g 'Super-X Field' 2 3/4 inch 1 1/4 oz. 3 3/4 dram equiv. shell and the 3 inch 'Record' with 1 3/8 oz. of shot in 1822.



The LRWF receiver has the same dimensions as the Regular frame but the 3" guns usually have the barrel reinforcing wedge.

It does appear that some effort was made in the 30s to remove less wood from the head of the stocks. Check the beginning here
http://www.picturetrail.com/sfx/album/view/17090409