Hello when I saw the Hornady podcast it kinda changed how I do my load development. First I think of the best components: bullet, powder, cases. I use a combo of ladder - to find best pressure. Then OCW - loads and nodes after find 2 best powder charge after ladder, high charge and low charge. Finally 10 round groups of each charge then find mean radius as per Hornady.
First time load development for 25 creedmoor with h4350, 134 eldm and hornady once fired from factory ammo from my rifle. In past I would shoot 100 yards and groups. But this time as above I did the ladder at 300 yards. From 39.8 to 41.8 total 11 charges.
The top orange circle target I was sighting in as I usually shoot 100. First it shot very low 5 inch and 1 inch right as you see the shot inch and half the largest red center square. Second shot high and left next shot high and right and last shot almost bullseye on orange circle. All these sighters I used the starting lowest charge which I’m going to not use. 4 shots bottom left square to start and 6 shots bottom right square. I had thought that 300 yards I would see more of a vertical string. There was a bit the last 4 shots as you can see it slowly creeping up as charge increased. As a whole this is showing very good loads. Also no pressure signs even with highest load of 41.8@2877.
I ended up choosing 40.4 @ 2783 and 41.2 @ 2832. Both charges are in the shots touching. I will try some 10 shot groups with each and get mean radius.
But I’m thinking just using the higher charge 41.2 doing 20 shot group and calling it a day.
Thoughts?
First time load development for 25 creedmoor with h4350, 134 eldm and hornady once fired from factory ammo from my rifle. In past I would shoot 100 yards and groups. But this time as above I did the ladder at 300 yards. From 39.8 to 41.8 total 11 charges.
The top orange circle target I was sighting in as I usually shoot 100. First it shot very low 5 inch and 1 inch right as you see the shot inch and half the largest red center square. Second shot high and left next shot high and right and last shot almost bullseye on orange circle. All these sighters I used the starting lowest charge which I’m going to not use. 4 shots bottom left square to start and 6 shots bottom right square. I had thought that 300 yards I would see more of a vertical string. There was a bit the last 4 shots as you can see it slowly creeping up as charge increased. As a whole this is showing very good loads. Also no pressure signs even with highest load of 41.8@2877.
I ended up choosing 40.4 @ 2783 and 41.2 @ 2832. Both charges are in the shots touching. I will try some 10 shot groups with each and get mean radius.
But I’m thinking just using the higher charge 41.2 doing 20 shot group and calling it a day.
Thoughts?
