Can't doubt your figure of 10% bump in displacement - but does that alone necessarily translate to 10% (or any %) improvement in overall performance?
The expected bump is a 4:1 ratio....meaning it takes a 4% increase in capacity to yield a 1% increase in velocity.....therefore you might expect a 2 1/2 % increase in velocity. If a previous load was 2,500 FPS, the increase might run about 2560 FPS.....this is a fair rule but not a rigid rule....it's a give and take thing....but it's not far off the mark.
