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Showing results for tags 'load development'.
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I wonder if anyone can help explain these odd results. I'm using ELD-X 143gn with N550 and have spent some time developing the load, tweaking seating depth but keep getting strange groups. This is a typical example, an 8 shot group, of sorts, with five touching in one group and a separate group of 3 shots to the left and slightly higher. This was shot at 208m with a very slight tail wind, with an occasional cross wind (from left to right). The loads are all measured as precisely as possible, to a few kernels of each other, bullets seated to the same depth, same case type, same trim length, same primer. The average velocity is 2600fps. Action seems tight in the stock, torqued down, scope mounts torqued too. It could just be user error I guess, but it seems odd that I get some shots printing on one, tight group and others printing similarly close in another spot. The barrel had been threaded but the guy who did it knows his onions so I doubt that is an issue, the crown is factory cut however, and hasn't been touched. It is a new rifle and may just need a few more down it perhaps. Anyone seen this sort of thing before?