My pdog load for my .223 Rems is 27 grains under 40 grain VMaxes, which average 3705 fps from the 26" barrels. If you try this load, please work up carefully, as it is approaching "max" pretty quick.
My previous "favorite" pdog load was 55 grain VMaxes over H322 at 3250 fps. Truth is, I can't tell much difference ballistically between the two loads, even in tough wind conditions. The added velocity of the lighter bullet seem to make it a wash when compared to the heavier slower bullet.
Both loads pretty much group in the .4's for me, on days when I'm up to it.
There is a slight lessening in felt recoil with the 40 grainers, but it's not really a huge difference.
Based on the above, one would think "six of one, half a dozen of the other", but.......
I can't explain it, and it's hard to put into words, but the 40 grainers moving fast just seem to be easier to shoot with pinpoint accuracy than are the 55's. With the 55's, when I shoot pdogs, that's what I hit...the pdog. With the 40's, it seems if I want to hit him in the armpit or head, that's where it usually lands. On paper and in the wind, they perform pretty much the same. On pdogs, though, my first shot hit rate probably increased by 10% when I started using XTerm and the 40's. /ubbthreads/images/graemlins/confused1.gif
After trying and testing two 1 pound cans of XTerm, my next purchase was two 8 lb jugs. I have an almost full 8 lb jug of H322 I haven't touched in almost a year and a half. (Not that H322 is a slouch, either....I just fell in love with XTerm.)
BTW...if you think H322 meters well, try some XTerm....you ain't seen nothin' yet.
Mike