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Joined: Dec 2000
Posts: 3,051
Campfire Tracker
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OP
Campfire Tracker
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Is there any advantages one has over the other? Ballistic or otherwise? Any comments would be appreciated! Thanx
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Joined: Jan 2003
Posts: 1,477
Campfire Regular
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Campfire Regular
Joined: Jan 2003
Posts: 1,477 |
The .270 shoots flatter, has more energy, is offered in far more loadings, and is one of the most popular rounds ever created.
The .260 kicks less and fits in short action rifles, saving you a bit of weight.
The two are basically suitable for the same kinds of game animals.
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Joined: Dec 2002
Posts: 155
Campfire Member
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Campfire Member
Joined: Dec 2002
Posts: 155 |
.260 bucks the wind better and has better terminal performance when it hits. this is due to the higher BC and SD.
what it may lack in flat-shooting, it makes up for in THWAK.
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Joined: Nov 2002
Posts: 1,073
Campfire Regular
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Campfire Regular
Joined: Nov 2002
Posts: 1,073 |
270 has 10 grs. more case capacity, and this makes for about 200-250 fps more speed with the same weight bullet in a 260.
In a +/- 3" point blank range sight-in, here are the stats:
260 Rem 120 gr. Ballistic Tip @ 2900 fps - 286 yards
270 Win 130 gr. Ballistic Tip @ 3100 fps - 299 yards
260 Rem 129 gr. Hornady SST @ 2850 fps - 283 yards
270 Win 140 gr. Hornady SST @ 2950 fps - 293 yards
260 Rem 140 gr. Nosler Partition @ 2750 fps - 274 yards
270 Win 150 gr. Nosler Partition @ 2850 fps - 282 yards
260 Rem 160 gr. Sierra Semi Spitzer @ 2550 fps - 247 yards
270 Win 160 gr. Nosler Partition semi spitzer @ 2750 fps - 271 yards
On average, the 270 has a 200-300 ft-lb of energy edge at 300 yards. The 270 actually drifts less in the wind (albeit a verry small amount), than the 260 does. But considering the speed advantage, the 260 is damn close. Maybe past 500 yards the difference would be more, but with hunting bullets inside 400y, it is almost identical. Both of these cartridges are in a group of about seven or eight factory cartridges that are damn near perfect for "normal" deer hunting.
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Joined: Jul 2002
Posts: 3,233
Campfire Tracker
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Campfire Tracker
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Posts: 3,233 |
One should also not forget the advantage of the 260 in Sectional density and wind bucking.
Best case both cartridges:
270/150 SD = .279.................MV 2905......wind drift @ 500 = 19.5" 260/140 SD = .287<(!!!).........MV 2830......wind drift @ 500 = 19.0<(!!!)
Boy, if those stats don't make ya wanna throw away your old .270..............
.......... <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />
JimF
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Joined: Jan 2001
Posts: 18,075
Campfire Ranger
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Campfire Ranger
Joined: Jan 2001
Posts: 18,075 |
Blasphemy I say!!! <img src="/ubbthreads/images/graemlins/grin.gif" alt="" /> Throw away a .270....
I think these numbers show very well why the 6.5X.308 has made such an impact on Highpower competitions..Those 142gr SMK's really cut the mustard.
Mike
God, Family, and Country. NRA Endowment Member
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