So i was out on Friday doing some load development with some Hornady 168 HPBT and was getting some nice 3/4" groups at 100 yards. I then swapped to some commercial cast 30 cal 165gn (lubed no GC) (weighs around 168). I used IMR 3031 started at 18 and up 1gn increments to 22gn.
I wasn't hitting paper. so i went to the 25yrd range and set up a nice big sheet of paper. No word of a lie i was getting 1.5 - 2 foot groupings??? WTH. My guess is these are undersized for my barrel and bounce around?
The reason for purchasing is i don't have a mold yet. Waiting on a group buy which will likely take a year lol.
Should i be upping the powder? or just cut my losses and sell them.