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With a 10" kill zone and a 10" wound channel, assuming 2" of overlap, you need to be within 6" of your point of aim for hunting accuracy.

That's a 12" group, or more traditionally, minute of...

I should have said "don't worry about the lands". It would have made more sense.

As you note, most of the time there is a big jump just to fit in the magazine.

What I really meant is chose a...

Main thing for beginners in my humble opinion is start with premium components.

Full length resize. Don't bother with much finicky stuff, just learn to set the projectile up just off the lands...