Originally Posted by
PHOENIX PHIL
I went to the range yesterday and this morning with a number of these loads. The variation across the chronograph is pretty surprising and is really all I have to report at this point. Somewhere along the way the screws in my rear base loosened up, I just love sending $$$ downrange with little return on investment. The last two loads I shot this morning were after I discovered this and retightened. These were with H4895 at 72.2 and 72.4 grains. The groups were okay at about 1.25" or so.
The interesting part though is the variation in muzzle velocity. At 72gr yesterday I was getting right around 2800 fps. At 73gr, the loads were smoking at around 3040 fps. I was quite surprised to see 200 fps spread over one grain of powder. It was pretty linear with 72.5gr yielding 2890 fps. As would be expect however, there were flyers in the groups with the loose scope base.
If I can find a good solid grouping load though, I think this will be a great round. We shall see.