August 16, 2012, 07:46 PM | #26 |
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"Don't be intimidated going to long range. If you can shoot around 1/2 minute, you're better than a lot of us."
Well, so far I CAN'T shoot a 1/2" group. To me, 3 shot groups mean little; at least 5 are necessary. Several times I have had a promising group started then here comes that flier. I think my heartbeat is the biggest problem as the crosshairs move at least 1/2 moa. I also need a scope with a finer crosshair. By the way, how is the word "VARGET" pronounced- is the "G" soft as in "gee" or hard as in "get"? Haven't been able to find any locally yet.
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August 16, 2012, 07:51 PM | #27 |
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Haha, it is pronounced "Var" mint / tar "get"
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August 16, 2012, 08:10 PM | #28 |
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As other posted go with a 175 SMK. Mine is awesome with 43.2 gn RL-15 and 175's 2.81 COL. You will be very hard pressed to get a 175 up to 2800/fps.
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August 16, 2012, 11:12 PM | #29 |
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"You will be very hard pressed to get a 175 up to 2800/fps."
__________________ Looks like 2600 fps will stay supersonic at 1k.
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August 16, 2012, 11:23 PM | #30 |
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Big jump...........
Looks like that 155 gr. A-Max has to jump .145" to get to the lands. That don't sound good......
Doesn't appear that can be helped much even with reloading since COL is so limited by bearing surface requiements.[and ejection port dimensions]. Sounds like a custom barrel is in order.......
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August 17, 2012, 06:54 AM | #31 |
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Sorry HShack- I was thinking one mile again. Need MV of 2830 or something like that. I have shot mine at 1000 yards many times already. Got a 6MMBR 2 weeks ago and have not shot the 308 since.
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August 17, 2012, 05:39 PM | #32 |
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Interesting stuff about long range with different bullets out of the .308 Win.
http://www.border-barrels.com/articles/art1.htm |
August 17, 2012, 09:55 PM | #33 | |
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Bart,
I note that if the author of that article had used the G7 BC championed by and measured for the 190 grain Sierra to be an average of .270 by Bryan Litz, the predicted 1200 yard velocity would have been 1089 fps. That's closer to the measured 1076 fps than any of the suggested BC alternatives in the table. Or at least, it is under Army Std. Metro conditions. Carmichael's conditions for the measured velocities aren't provided. Quote:
The 155 grain Palma bullet (#2155) used in 1992 is not the same one now labeled "Palma" by Sierra (#2156). The original one is now referred to simply as a 155 gr MatchKing. The newer 155 is longer and more aerodynamically efficient so it has a higher BC. Indeed, its BC at top velocities is up with that of the Sierra 175 gr SMK (#2275), though it drops off faster with loss in velocity. But because you can get it up to higher velocity at the start, it's got a very slight theoretical advantage at 1000 yards from a 24" gun barrel. The only area of concern I see with the newer design is that it's bearing surface is very short; about 3/4 of a caliber. This shouldn't be a problem for Palma shooters soft seating against a tight throat, but for magazine fed guns and longer throated chambers it doesn't give you a lot of room to play with seating depth and it makes getting the rounds seated concentrically of greater importance as the short bearing surface won't self-straighten in the bore as well as a longer one does.
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August 17, 2012, 10:22 PM | #34 |
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I just have to say, if you need to take a 1000 yard shot on a target you just need to learn how to stalk in closer to them. It really ain't all that hard, I mean they're stationary for cryin' out loud. Besides the .308 is questionable for humanely poking a hole at that distance.
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August 17, 2012, 11:18 PM | #35 |
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August 17, 2012, 11:23 PM | #36 | |
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Unclenick mentions:
Quote:
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