Re: Help me figure out what Im overlooking
It would depend on the press you have and how much use it's seen, say it's a good press but generations and 10's of thousands of rounds old it could have wear in some areas, or if it's weaker press type (C frame, cast aluminum) those can flex also. But Presses like Lee's classic cast, RCBS Rockchucker, ect are built very solid I can't see them flexing under normal use in good condition.
Keep in mind the animals we shoot for food and display are not bullet proof. Contrary to popular belief, they bleed and die just like they did a hundred years ago. Being competent with a given rifle is far more important than impressive ballistics and poor shootability. High velocity misses never put a steak in the freezer.