Bigchast1, Congrats on your new barrel!

I have two, 14" Contender barrels in 223 Rem and both have proven to be real good shooters! I did extensive load development w/ the first barrel, incl H4895, H335, H322, WW748, VarGet, RL12, RL15, VV130, AA2015BR, AA2230, and AA2460. My main use w/ the 223 is prairie dog hunts so muzzle blast is a legitimate concern for me. I settled initially on H322 as it gave a good combo of performance and muzzle blast. At least in my gun, AA2015BR and H322 behaved quite similar w/ similar load data as well.

I understand the load data for these two may differ some now. In my barrel, H4895 and H335 had a great deal more muzzle blast w/ similar performance, compared to H322. RL12 was ok, but of course it's since been discontinued.... The others had subpar performance.

So what load(s) do I use? Initially (both Rem brass, Rem 7 1/2 primers, and H322), Speer 50 gr TNT/24.7 gr powder/OAL 2.330"; Nosler 50 BT/24.5 gr powder/2.335" OAL. Both loads generate about 2950-3000 fps w/ sub-MOA accuracy. But, the 40 gr "plastic tipped" bullets were NOT available when I first got my 223 barrel. Since the 40's are now available, looks like I'll change to 40 gr Hornady V-Max/25.5 gr Vihtavuori 130/2.350" OAL/3300 fps (also sub-MOA).

I particularly like the VV powder as it's muzzle blast is even less than H322. The worst things about the VV powders is the availability (limited) and smallest container size (TWO pounds). It's a small grained, extruded powder, similar to H322, that meters quite well. I've not tried BenchMark in my 223, but in my 15" 22 BR XP-100, it's muzzle blast was moreso than that of VV 130. Hope to play w/ some RL 10X at some point, as well. I can't comment on Blue Dot from personal experience, but the articles I've seen about it's use have been very intriguing. I agree w/ the earlier poster re: the Burris 3-12X handgun scope: it's much superior to all others for varminting purposes; I highly recommend it!

Gary T.