Posted this in the Sierra TMK loading thread but figure it fits this thread too.
Changed the stock on Ladasha and did some load dev today.
View attachment 1047489
18” Proof
107 TMK
Fed 205M
Virgin Alpha Brass
Varget
Shot 6 5 shot groups which were shots 51-80 on this barrel. 3 were less than 1/2” at 100 yds which is ridiculous. Others likely would have been but wind had my political sign target dancing and I was mainly wanting to measure speed today so I just sent a few.
31.2gr - 2622.2
31.6gr - 2660.8
32.0gr - 2700.5
32.4gr - 2741.0
32.8gr - 2784.9
33.2gr - 2816.2
No pressure signs at all at any time. Easy to see that basically each tenth of grain is getting me 10 fps. Will probably load 40 up at 33.2gr for practice, see where speed is after barrel has 120 down the tube, and either leave it or chase 2850ish. Goal was 2800, thinking it will either get to 2850 on its own or with the encouragement of a tenth or two more of Varget. Absolutely loving this rifle.