6.5-284 vs 270 win

[barthmonster]

I know, we've soon tons of messages titled like this...

The 6.5-284 is kind of popular right now with accuracy-plenty and a good long-range record up to and beyond 1000 yards... It has also been described as having a barrel-life (accuracy life) of probably less than 1500 rounds...

The good-old 270 win on paper seems to have similar powder-charges, ballistics (maybe even faster with a 140 grain), and even ballistic co-efficients (berger VLD 150 looks nice). I wonder why as a long-range hunting caliber, the good, old 270 isn't more popular. Also wonder if it is plagued with the 1500 rounds or less barrel-life or is the longer-skinnier powder-column somehow more protective of the barrel throat ??

Wondering because now that I sold my 270 win (Rem) and bought a nice Savage 308 (P/TR), maybe in a year or so I'll get a 270 win barrel for the Savage !!

 

[roninflag]

Bart- i have two 6.5-284s. i shoot against 308's all the time. i have never shot in a match with someone shooting a .270. i would like to though.

 

[barthmonster]

I think you have the advantage over 308 with your 6.5-284 ballisticly. I was thinking the 140 or 150 VLD's looked good for 270 win may have to try them. my son still has a 270...

 

[Oliveralan]

6.5-284 has a very proven track record as being an impressive long range cartridge. The 270 has been around for ages and it doesn't. The issue is that tere aren't heavy enough bullets available in .270 cal that are needed and the 270 needs more capacity if your trying to "scale up" a 270 you are going to need some more capacity and also brass as good and tough as lapua 6.5-284 is.

 

[barthmonster]

Hodgdon shows a 6.5-284 load (140gr) being compressed at 53.5 gr...
also a 270 Win load (150 gr) being compressed at 59.5 gr...

the 6.5-284 (140) shows a high of 2900 fps (100 V), but the data didn't immediately list barrel-length that I saw on the website...

the 270 win (150) shows a high of 2850 fps, I assume the same barrel-length as above...

Granted these are from the book, but I think they're pretty close except the .264 bullets have a little higher ballistic-coefficient.

Now I've always heard that a short-action cartridge is more accurate than a long-action cartridge, but many 6.5-284 shooters changed to a long-action to accomodate the VLD's and increase powder capacity also...

The 270 has always had a reputation for accuracy especially with 4831(SC) which is also a popular 6.5-284 propellant. I don't know what a person would gain trying a 270 at long-range and he may not win in competition... Then again until someone tries it who knows...

 

[Topshot]

Maybe a better comparison would be the 6.5/284 v .270WSM ( or 270/300wsm) to get the better brass.

If both had a quality match grade 30" barrel in a fast twist with high B.C. bullets, it would make an interesting shoot out at 1000 yards.

 

[bigngreen]

With 140's out of the 6.5x284 and with what I get out of my 270 WSM at a 1000yrds the 270 will be a little better or even at worst, load some 150' or 160+gr bullets then the 270 WSM will start to dominate to a 1000yrds. I haven't worked real hard to see how far I can extend the ranges of the 270win cause the WSM is just so simple!

 

[liltank]

IF you want decent brass for a 270 Win, buy Lapua brass in 30-06 and neck it down. You will be able to really see the potential of the 270 w/ a 150. You could always do one better with 270AI. My dad just reminded me of the old load for our rifles which seem to work very well. Rem casings, cci200, 42.0grns IMR4064, and Nosler 150grn Ballistic Tip. Hain't been a deer walk away from that recipe yet in PA.

Tank

 

[barthmonster]

..... You will be able to really see the potential of the 270 w/ a 150. You could always do one better with 270AI.
Tank

mmmm... Yeah, I'm liking the idea of the Berger Hunting VLD (150 gr.) in a 270 AI... May have my next Savage (Or T/C Encore) barrel picked out !!

Christmas 2011 hurry up !!

 

[bigngreen]

The 270 Gibbs would have a little more snot yet over the 270AI, probly run with or near the 270 WSM I would think, I just happen to be reading on Gibbs right now.

 

[roninflag]

I think you have the advantage over 308 with your 6.5-284 ballisticly. I was thinking the 140 or 150 VLD's looked good for 270 win may have to try them. my son still has a 270...

i have shot against a guy with a 7mm wsm ( this round is probably the ballistically superior round among all of these), a .264 mag , .a lot of .223s and 308s . one that i have NEVER beaten is a guy that shoots a 30-06. important is the barrel and the ammo/load.

 

[barthmonster]

actually that is a round I was looking at that also looks good if you can handle the recoil (in a light rifle I hate it !!) is '06 or 30-06 AI...

With 150's the 270 or 270 WSM looks better, but the '06 would be great for long-range hunting if it was up to accuracy standards...

 

[liltank]

actually that is a round I was looking at that also looks good if you can handle the recoil (in a light rifle I hate it !!) is '06 or 30-06 AI...

With 150's the 270 or 270 WSM looks better, but the '06 would be great for long-range hunting if it was up to accuracy standards...

30-06 use to be one of the premier calibers for target shooting. In some disciplines it still is. It just has been trumped by all the short mags. It is a step up from the 308, and a step down from the 300WM. So it is a matter of picking your poison and making it work. Any caliber can be made to meet or exceed a standard of accuracy.

Tank

 

[Derek M.]

A friend has a 24" Lilja 3 groove on his custom 270. The slowest speed with 150 VLDs and H4831SC and H1000 was 2950. Most were near or at 3000fps!

JMO, but forget anything "Ackley." He didn't improve much of anything other than extra work case forming etc. The biggest gain you get from making an Ackley Improved caliber is "ooooo, aahhhhh, and the wow factor." If someone likes Ackley Improved calibers, that is your choice and good luck with them. I think they are a waste of time with the exception of maybe a 280AI.

There's nothing you can't accomplish in .277 if you use the Win, Roy, or WSM.