.30WCF is the original name for the .30-30.
1920 safe? Dunno why not.
Anecdote: I was given an old Model 94 that had been brought back from Mexico. Rust bucket. 1902 manufacture. .25-35, but somebody apparently had run an arc-welding rod up inside the barrel and zapped it.
No luck on finding a .25-35 barrel. So, after de-rusting everything, I found an el-cheapo used Type 2 barrel and stuck it on. It never did fit up really tight. I "created" a rear sight, from my wild-animal box of miscellaneous gun parts.
I put on a heavy work glove, stuck the gun around the corner of the house, and pulled trigger. No big deal; it merely did the usual Bang! like it was supposed to.
I went to the benchrest. Bless Pat, the sights worked, and it was dead on at 100 yards! So, I patted myself on the back for one more instance of survival of my own folly.
IOW, I wouldn't worry about one of those new 1920 critters.