I was able to catch a break in the weather, and the temperature, so I did a ladder test at 320Y on an almost windless 45 degree morning. I probably should have done it at 400Y but it was a tad drizzly, also I was doing the ladder test for my 223AI at the same time and I don't plan on shooting it past 800Y, so 320Y seemed more appropriate.
The test was with Hornady 105gr HPBT, I wanted to see how these shot because they are only $20-ish per 100 which would help me shoot/practice more and save money over the 105 hybrids.
Earlier in this thread I mentioned the Nosler RDF's didn't shoot well in my 6mmBR rifle at all which was my first attempt to shoot cheap bullets.
Yes I just grabbed this old cardboard box with that big 200Y service rifle bull on it. I'm not very official when it comes to targets and ladder tests, plus I was in a hurry when I got up from the computer and noticed it was calm outside.
The results were somewhat conclusive??? I started at 28.5 grains of H4895 and ended with the 12th shot at 29.6 grains, these were in .1 grain increments. No pressure signs at 29.6, the primers weren't even flat yet and it was easy to open the bolt.
There was the slightest wind on the last 3 or so shots so I'm only looking at the vertical which is around .6" , shots - 9/29.3gr, 10/29.4, 11/29.5, 12/29.6. I'll go for loading 29.4 and 29.5 grains to see how they do at distance. I don't know what the distance to the lands the Hornady 105 is because I just left my seating die alone which is set for the Berger 105 hybrid. Looks like everything is shooting decent enough as is.
I used CCI450 mag primers and Lapua brass.
Next outing I'll bring the Oehler 35P chrono to see how the fps, SD, and ES are doing.
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