by BD1 » Tue Feb 23, 2010 6:25 pm
The pics are the best of Sunday's results. The BD 293s were heat treated to about 25 BHN, the Lee 300s were water dropped and aged to around 18 BHN. I do get groups I could live with, except for the flyers. I've had quite a few split groups with cast, 3 shots under an inch, with the other two touching but 4" out. It's starting to make me doubt things, like my scope. But when I go back to the FTX things group right up tight again. A bit of a mystery. However the surplus 297 did allow me to reach 2,000 fps, and then some, with 300 grain cast boolits and no pressure signs. No case head drag marks, nice rounded primers and no function issues.
They are all five shot groups at 100 yards. I have to shoot prone at this range as the line is elevated and my tripod is not tall enough to shoot through the chrony from the bench. However, I'm still using a rest, and while going prone on a rest may not yield my best groups, it doesn't explain the flyers. The orange paster is an inch and a half diameter.
BD
- Attachments
-
- IMG_0126.JPG (32.5 KiB) Viewed 28731 times
-
- IMG_0127.JPG (31.28 KiB) Viewed 28731 times
-
- IMG_0128.JPG (30.83 KiB) Viewed 28731 times