243 load
I use 46.5 grains of IMR 4350 under the 70 grain blitzking in my LSS BDL, be sure to seat bullet out to the rifling. Mine shoots very well. This load is a compressed load in Federal cases, and I have found will almost always shoot better than a non-compressed load IMO. You may also want to try the H380 powder. I have a 55 grain bullet compressed load that uses it and will go 4000 FPS.
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