If memory doesn't fail me, CZ barrels have twist rate ideal for 124gr bullets.
Also, slide cycling should be a bit faster with 124gr bullet vs 147gr bullet, at least in theory; one older gentleman I shoot with claims he can feel the substancial difference shooting heavier bullets and actually 'has to wait for slide to go all way forward to make next shot' on .40 gun thou.
If you like VV N320, try loading with Clays too (not Universal), shoots very soft, no flash, no smoke, quite clean (cannot compare how clean vs N320 as I never used N320 due to price).
I recently shot with Slavex and let him compare 2 of my loads, one mag with Clays, and then one with 700X where last (bottom round in mag was with Clays), he thought last round was undercharged till I told him it was diff powder
Also, slide cycling should be a bit faster with 124gr bullet vs 147gr bullet, at least in theory; one older gentleman I shoot with claims he can feel the substancial difference shooting heavier bullets and actually 'has to wait for slide to go all way forward to make next shot' on .40 gun thou.
If you like VV N320, try loading with Clays too (not Universal), shoots very soft, no flash, no smoke, quite clean (cannot compare how clean vs N320 as I never used N320 due to price).
I recently shot with Slavex and let him compare 2 of my loads, one mag with Clays, and then one with 700X where last (bottom round in mag was with Clays), he thought last round was undercharged till I told him it was diff powder
