I sometimes get rounding of the bases and other sharp edged of my 22 caliber bullets when the temperature probably should have been a little higher or my cadence a little faster or the sprue puddle a little bigger. My testing has indicated that as long as the gas check won't fall off, fifty yard squirrel head accuracy is still there.
Has anybody done testing on larger caliber bullets to see if rounded bases degrade accuracy and if so how much? What about rounded bases that are not quite uniform all the away around?
What about plain based bullets. It SEEMS like it should make a difference -- but does it? Could a rounded base on a plain base bullet perhaps be even better because it reduces the fins on the back caused by the rifling. Sort of like bevel based bullet are sometimes assumed to do? Opinions are welcome, but opinions based on testing are even more welcome.
John