270 works great for antalopes .Sounds like u have a nice riflether bf55.
Efective range im not sure guess it depends what your hunting , the bullets etc- but pretty far. off hand not sure distances.
Same with the kick gun& bullet weights effect all that . But 270.case is a 30/06 necked down same powder charges etc. But heavyer 30 bullets kick more then the 270. 150 grainers .
Hve fun shooting it , best way to find out how much it kicks!
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