RE: 257 weatherby
Try the Hornady 120 grain hollow point. It is a heavy jacket HP intended for deer size game but at high velocity would work well for varmits as well. I had one for a while but it didn't really outperfor my 25-06 my any meaningful amount and used a lot more powder so I sold it and now just use the 25-06. It is for sure a rifle for handloaders.