Truflite contours and numbers are different to other barrel makers, well at least I know they're different to Bartlein.
A #3 Bartlein is a significantly meater & heavier beast than TF #3. My 280ai is a fluted #3 TF and i think its about right as I was wanting a light weight 24in bbl "long range tops" rifle. Bare rifle ended up just on 6lbs and performance is so close to RemMag speeds that its not worth arguing over the difference (~20 fps). Not sure TF have changed their profiles since I did mine ~5 years ago ?
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