yew plucker
05-05-2016, 07:28 PM
OK, back to the range I went. I had loaded 41.7 grains of 4064. What? Because last time I got the best performance from 41.6 and 41.8 grains, both right at half an inch. Seemed like the obvious thing to do. I also backed off the seating depth to 2.895, which is still touching the lands. So how did it go?
Take a look. First three rounds downrange were looking pretty good. I was thinking, "Well, I might have found the formula here..." The fourth was a dud, bad primer. Tried it twice to make sure it wasn't just a light strike. What would have been round number five flew from the group.
http://i.imgur.com/JL09XSL.jpg
First round from my second group seemed to like the same place the last round went, so I got to thinking, "Maybe it was a cold clean bore and now it is a warm slightly fouled bore..." I got two rounds one right on top of the other. Then... three rounds went rogue!
http://i.imgur.com/pAlRouj.jpg
Groups three and four were tried with a CCI primer instead of a Federal. I wast just seeing what would happen. Something did happen...
http://i.imgur.com/ma8HIQS.jpg
and
http://i.imgur.com/f2QHATR.jpg
OK, I am done with the CBC/Magtech brass for good. I'll keep it for war stock but never use it again for attempted match loads. The brass is just too thick and pressures are higher than with other brands of brass. Even at 41.7 grains of powder, the bolt was sticky most of the time. My next loads are going to be with the same powder charge and some Federal brass I have already processed. Maybe I'll just do a ladder shoot to see where those lovely nodes are.
The saga continues. I feel like Odysseus trying to get home.
Take a look. First three rounds downrange were looking pretty good. I was thinking, "Well, I might have found the formula here..." The fourth was a dud, bad primer. Tried it twice to make sure it wasn't just a light strike. What would have been round number five flew from the group.
http://i.imgur.com/JL09XSL.jpg
First round from my second group seemed to like the same place the last round went, so I got to thinking, "Maybe it was a cold clean bore and now it is a warm slightly fouled bore..." I got two rounds one right on top of the other. Then... three rounds went rogue!
http://i.imgur.com/pAlRouj.jpg
Groups three and four were tried with a CCI primer instead of a Federal. I wast just seeing what would happen. Something did happen...
http://i.imgur.com/ma8HIQS.jpg
and
http://i.imgur.com/f2QHATR.jpg
OK, I am done with the CBC/Magtech brass for good. I'll keep it for war stock but never use it again for attempted match loads. The brass is just too thick and pressures are higher than with other brands of brass. Even at 41.7 grains of powder, the bolt was sticky most of the time. My next loads are going to be with the same powder charge and some Federal brass I have already processed. Maybe I'll just do a ladder shoot to see where those lovely nodes are.
The saga continues. I feel like Odysseus trying to get home.