Here are a few examples off a Proof steel 26" barrel with BR-4 primers. COAL is 2.355"
10 shots at 100 yards 29.7gr of Lever Berger 108gr VLD
Taking the powder up to 31-31.8 on the Berger at the same 2.355" got the following which is not great
I switched over to CFE, and the same length.
Switching over to the ELDM bullet in both Lever and CFE results in the below shots.
Here are factory rounds with the 108 ELD-M which have a COAL in that 2.26 range
10 shots at 100 yards 29.7gr of Lever Berger 108gr VLD
Taking the powder up to 31-31.8 on the Berger at the same 2.355" got the following which is not great
I switched over to CFE, and the same length.
Switching over to the ELDM bullet in both Lever and CFE results in the below shots.
Here are factory rounds with the 108 ELD-M which have a COAL in that 2.26 range