Interesting day today......it started with a search for my keyring, which took about 15 minutes to re-locate. That mission accomplished, I drove about 20 miles out to Mom's house to see cousins that were visiting from the Bay Area. Had a good meal of shrimp and chips, and I'm still pretty full at 6 P.M. from that 3 P.M. repast. Marla's in Beaumont will be my undoing.
I finished The Condor Cuddler 22-250 Test Load assembly when I got home. 36 grain Barnes Varmint Grenade bullets look a lot like Sierra 53 grain Matchkings to me. Ballistic coefficients aren't much different, but sectional densities are about 79% of what lead-core bullets enable. WW-748 is the fuel, sparked by WLR primers, 36.0 to 40.0 grains stair-stepped. Velocity claims are INSANE--3900 to 4300 FPS. We shall see what obtains as far as accuracy goes. 100 rounds, 2 rifles, 10 shots of each increment for each rifle. Just a taste, hopefully enough to make some decisions about CA rat strafing.
22 Hornet will be loaded tomorrow, 30 grain V/Gs. These look like 40 grain Hornet bullets. The 50 grain V/Gs for the 223/5.56 look like 69 grain Matchkings, and require a 1-10" or faster twist to stabilize.
YES--it is very different.