So I had the opportunity to try out this new jug of Varget yesterday. The environmental conditions were spot on compared to previous test conditions. This new jug produces slower velocities from why I can see. My normal max charge on the old lot was at 45.5 grn (heavy bolt lift), but was non existent with this new jug. I could go a little higher on the charge to see if my max charge has increased, but then I will be running an extremely compressed load. Below is what I noticed from the data by running a few short ladders and then loading up to my normal charge.
Test on 1/1/2023
44.7 grns. AVG: 2714
44.3 grns. AVG: 2689
Previous tests show that my high node is at 44.7 on the old jug of Varget and this load produced velocities in the 2760 range at the same environmental conditions. In order for me to get back up to that range I will have to increase my load to almost 46.0 grns if I would guess. Not to comfortable doing that since it will be an extremely compressed load. I settled on this charge so I could ring out the most velocity as possible while staying in a node.
The reason I threw in some loads at 44.3 is because I noticed another node between 44.0 - 44.5 grns. The AVG on this load was 2689.
Previous test data shows that this lower node was between 43.0 - 43.5 grns. and AVG in the same 2680 - 2690 area. Never spent a lot of time on this charge since I was mainly focused on the higher velocity node.
I think the only thing I can do is run this new jug without lot# and date code at a slower velocity and a charge of 44.3 grns to stay in middle of the lower node.
Good thing is I still have 10 lbs of the previous lot of Varget on hand.
Just in case if anyone is curious… 308 Win, 178 ELDM, Lapua Brass, CCI 200 LR Primers, Varget of course, all cases annealed after every firing, FL resized with the proper shoulder bump, necks are bushing sized, and mandrel used prior to bullet seating.