are these lw barrels forged??

jim gaska was selling .630 forged barrels for mrods by lw .630 is very very very close to 16mm like the airforce barrels. I shoot a .20 witch has proven to suck with the very small variety of pellets, it only likes the 23.7grn eun jins in stock form, and I get a lot of oddly misshapen pellets in every tin qc sucks! ive got tt’s tophat ordered maybe that will help. buuuutttt what I was wondering was could I shove a jacketed .204 ruger bullet into a .203 barrel, maybe cut down the rifling a little bit with a wooden dowel and some valve grinding paste. or would I just be pissing in the wind. Is the barrel too soft? would it have enough power to propel the bullet? they are only like 25 grns but the jacket. I really wish lyman or lee would make a .20 mold the only option is corbin and they are way too proud of their swaging equipment. I know lee and lyman both sell blank molds but how would you cut the sealing rings? .20’s like 5mm, drill bits are cheap enough but those rings seem like theyd be real tricky. any advice b4 I go for the gold would be appreciated. I guess I should just buy the .257 barrel and have at it with those. seems like itd be a lot simpler