What in the Deuce does this mean? 1.5" on paper then goes to 5 shots?
It sounds like your reloads aren't suited to the rifle. You used fmj as a factory comparison for accuracy. That's a little like asking Stevie Wonder if it's cloudy outside.
Get some quality factory ammo and see how that shoots. Also 3300 is about max velocity, v you should never expect max velocity to be the most accurate.
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