Woo-hoo!!! I nailed it today, with a 600-36X at 500 yards in F-TR (200-13, 200-8, 200-15). I've shot 23 600's before with the sling, but this is my first in F-TR and I was pretty happy about it! Conditions were pretty mild for Phoenix and it didn't even get too hot, mid 90's or so.
BAT 3L with a Krieger 1:11" twist medium Palma (#15), Nightforce NSX on about 30X, Rempel bipod, Robertson stock.
The load was WCC 60 .308 brass, Russian primers, 42.0 IMR 4064 (1960 vintage), Sierra 180's (also pretty old) moly coated and pointed with a Whidden tool.
Yesterday My friend John L. throated it out a bit for me and that seemed to clean up the elevation a bit. It now has 0.100" freebore (more or less, it's hard to be real exact here). I'll have an article next month on the website about the throating process. What was fun to see today was that after having the barrel off the action, the action out of the stock, the scope off the action and then reassembling everything, the first shot out of the barrel was a 10 at 9:00 with perfect elevation. Nice to know the rifle holds zero even through total disassembly.
The barrel had 1150 rounds on it before the throat job, which essentially left a brand new throat. As always, my break-in consisted of shooting a match. Seems to work, that's the second time I shoot a 600 for a "break-in."
Thanks for putting up with me, but I thought at least the load details might be useful to others, work up to the load, it isn't particularly hot, but my powder is 52 years old and the bullets are at least 30 years old and things do change over time, both in manufacturing and the powder even just from age.
BAT 3L with a Krieger 1:11" twist medium Palma (#15), Nightforce NSX on about 30X, Rempel bipod, Robertson stock.
The load was WCC 60 .308 brass, Russian primers, 42.0 IMR 4064 (1960 vintage), Sierra 180's (also pretty old) moly coated and pointed with a Whidden tool.
Yesterday My friend John L. throated it out a bit for me and that seemed to clean up the elevation a bit. It now has 0.100" freebore (more or less, it's hard to be real exact here). I'll have an article next month on the website about the throating process. What was fun to see today was that after having the barrel off the action, the action out of the stock, the scope off the action and then reassembling everything, the first shot out of the barrel was a 10 at 9:00 with perfect elevation. Nice to know the rifle holds zero even through total disassembly.
The barrel had 1150 rounds on it before the throat job, which essentially left a brand new throat. As always, my break-in consisted of shooting a match. Seems to work, that's the second time I shoot a 600 for a "break-in."
Thanks for putting up with me, but I thought at least the load details might be useful to others, work up to the load, it isn't particularly hot, but my powder is 52 years old and the bullets are at least 30 years old and things do change over time, both in manufacturing and the powder even just from age.
