So Will the .270 Win Overtake the CM's and PRC's?

[VLD Pilot]

Yes.
I would think 270 owners (yes I have one) can read as well as 223/5.56 owners. For many years we have available heavier .,223/5.56 ammo with the twist required stated. I have heard of no big problems, the same could be done with .270.

Right. I have a factory 9 twist .223. It was a great thing to make a semi fast twist barrel in a bolt gun for the .223. Before that, ARs offered faster barrels but all bolt guns seemed to be the 12 twist. Ideally I think 8-9 twist barrels are ideal for the .223. Comp shooters prefer 7s for the 90s but all others IMO would do best with 8-9 twist. Like the .223, the .270 should have at least a 9 twist to run the long mid to heavy weights.

 

[Nomosendero]

There will be more projectiles coming and already are, with the advent of the .277 sig fury (which destroys the 6.5 creed ballistics-wise) and the .27 Nosler (a whole different animal altogether). Nosler has their 165 grain ablr out and available now. Matrix ballistics (now shipping to the USA) has very competitively priced 155, 165, and 175 vlds. Woodleigh makes a 180 weldcore which is not a lr bullet but would absolutely SMASH out of the Nosler. Pretty sure cutting edge and hammer bullets make some "greater than 1:10 twist required" bullets too.
Now I agree with you. These aren't going be any good reason for 6.5 and 7mm shooters to get rid of their chosen chamberings. More like the development of a cult following, for people already enamoured with the .277 bore. People like me. It was my first deer rifle, my parents bought it for me when I was 14. I like the cartridge. I don't have a lot of reasons why but i just do and am not interested in the 6.5s or 7mms. Great to have more options, I've emailed savage and asked what the odds of them offering a plain vanilla 111 with a 1:8 twist or so.

The Fury destroys the CM and a 308 necked down to 270, it has nothing to do with that but due to the special case and pressures that special case can handle. Sig likely will offer that case in 6.5 & .308 cal. as well but it's irrelevant.

But concerning the new 270 bullets I like it. I would be happy with either a 270 cal. or 6.5 for my next rifle. I will use 300 for Elk and above anyway, so for me it's Caribou/Deer and down, both are fine. I have to say though that a .270 Wea. with a 1-7.5-1.8 twist would be great & good factory ammo choices to one of my boys that would wind up with the rifle, that round is here to stay, the 270 Nosler may make it or may not.

 

[VLD Pilot]

Placement and the proper terminal performance in that right place. Apparently the 10mm provided that with your proper application.

Just making the point that it's well under 1500 ft lbs. Pistol bullets are designed to perform well under 2K fps. Rifle bullets perform optimally around 2K fps. Yep placement is King. Lots of .243s impact velocity around 2K but energy around and below 1K ft lbs and still does a super job killing deer. Blow thru both lungs and the animal is done. Don't take much to do that.

 

[Nomosendero]

I didn't, I handgun hunt too & knew what you meant, been using a 44 mag for years. I now have a long slide Glock 10mm with a Vortex Viking red dot, I look forward to using it.

 

[tomsd]

The Fury destroys the CM and a 308 necked down to 270, it has nothing to do with that but due to the special case and pressures that special case can handle. Sig likely will offer that case in 6.5 & .308 cal. as well but it's irrelevant.

But concerning the new 270 bullets I like it. I would be happy with either a 270 cal. or 6.5 for my next rifle. I will use 300 for Elk and above anyway, so for me it's Caribou/Deer and down, both are fine. I have to say though that a .270 Wea. with a 1-7.5-1.8 twist would be great & good factory ammo choices to one of my boys that would wind up with the rifle, that round is here to stay, the 270 Nosler may make it or may not.

Q please. Background - admittedly - I am today officially a 73 year old wuss. A couple years ago - I could not resist buying a 300 Win - used - in a Weatherby Mark V rifle - when visiting my old home town in Oregon. $745 for a great condition rig Stainless Steel barrel - Leupold base - muzzle break -produced in 1995 or so - in Japan/? Hard to find places here in SD TO SHOOT AND i AM TRING TO GET A RECENTL PURCHASED Tikka 3X Lite in 6.5 cREED - AND WILL GO SHOOT BOTH. (fricking caps button) Q - what do ou think the twist might be in the 3OO Win - Mark V ?

 

[tomsd]

Q please. Background - admittedly - I am today officially a 73 year old wuss. A couple years ago - I could not resist buying a 300 Win - used - in a Weatherby Mark V rifle - when visiting my old home town in Oregon. $745 for a great condition rig Stainless Steel barrel - Leupold base - muzzle break -produced in 1995 or so - in Japan/? Hard to find places here in SD TO SHOOT AND i AM TRING TO GET A RECENTL PURCHASED Tikka 3X Lite in 6.5 cREED - AND WILL GO SHOOT BOTH. (fricking caps button) Q - what do ou think the twist might be in the 3OO Win - Mark V ?

Thanks

 

[Nomosendero]

My Sendero 300WM will handle the 215 just fine & I stopped there, some go a little heavier but if I was getting a 300WM built or buying a 300PRC I would want a 1-9 at least.

 

[VLD Pilot]

My Sendero 300WM will handle the 215 just fine & I stopped there, some go a little heavier but if I was getting a 300WM built or buying a 300PRC I would want a 1-9 at least.

The new 245s need an 8 twist. Debating the 8 and the 9 for my 300 PRC build. More than likely will stick with the 9 and run 215-230s max. I think the 245s are a bit heavy for the 300 PRC. If I was doing a 300 NM, it'd be an 8 twist.

 

[DavidA]

Sort of to compare figure 260 Rem with a 142 ABLR. versus a 270 win with a 150 ABLR. 24" barrels. I have both 260 Remington 26" and a 270 win with a 26" barrel. The 270 win is a 1-8 twist and not even going to compare because the 270 win with the 170 Bergers smokes it. so I have some data for that. I can get 75 fps +/- more with 260 Rem vs 6.5 Creed. I'll give the Creed the nod and give it 260 Rem velocity.
6.5 Creed with 142 gr ABLR Muzzel velocity approximately 2,868 fps and 2,590 ft lbs. Sea level 200 yd zero 10 mph cross wind at 1,000 yds 1,611.5 fps 819 ft lbs energy. Drift 1.59 mils, drop 7.2 mills.

So of to the 24" 270 win 1-10 twist 150 gr ABLR. 3,048 fps velocity, 3,095 for lbs energy at the muzzle. At 1000 yds 1.65 mills drift, 6.6 mills drop. Velocity 1,638 fps 894 ft lbs.

Based on the above the only area the Creedmoor wins is drift by .06 mills at 1,000 yds. The 270 win has 75 more ft lbs energy, 28 fps higher velocity. and a drop of .06 mills less drop. What does this really mean. The 270 win with a 1-10 twist beats a 260 Rem 1-8 twist to 1,000 yds. Yes inside 300 yds though the 270 win sleighs the 260 Rem. 270 win 1550 gr velocity 2,575 fps 2,208 energy MPBR 316 yds. 260 Rem 2,445 fps 1,885 ft lbs energy MPBR 300 yds.

So the 270 win is superior inside 1,000 yds They both go transonic at 1,350 yds. The 260 Rem does have an advantage thought in felt recoil. If we assume Both as 10 lbs rifles, the felt recoil for the 260 Rem loaded as above is 12.5 ft lbs recoil energy. The 270 win loaded as above 18.9 ft lbs.

If we go with a 1-8 twist 270 win with a 170 Berger we can get approximately 2,870 fps from a 24" barrel. While it is 7.0 Mills drop and 1.46 Mills drift kicks ***, and the muzzle energy is 3,100 ft lbs, the felt recoils for a 10 lbs rifle is 19.5 ft lbs. So for repetitive shooting, say a PRS Match the softer shooter is more desirable. In then end the 260 Rem is a much more efficient energy with a relatively low recoil. For hunting 270 win all day unless you are recoil sensitive.

I went with a 270 win 1-8 twist 26" barrel in my barrel change McGowen Precision 700 Remage. Al little heavy 12.4 lbs but at 2,930 fps with the 170 Berger she is a crazy performing 270 . This round generates a 16.4 lbs calculated felt recoil so with my brake I am guessing 8.2 ft lbs felt recoil. So this comparison should help someone understand the dynamics of different cartridges. inside 300 yds any of these rifles will kill if shot placement is accurate, then we can get into the 308 win and 7 -08s and alike. Accuracy kills, you can't miss fast enough.

 

[Nomosendero]

All fun stuff
Since so many want to compare the bigger 270 case with the modest CM case, might as well also compare with the new Wea. RPM case & with the same head dia. Things liven up a little!
Again, I have both the CM and 270,I just don't have an emotional tie to either.

 

[VLD Pilot]

Sort of to compare figure 260 Rem with a 142 ABLR. versus a 270 win with a 150 ABLR. 24" barrels. I have both 260 Remington 26" and a 270 win with a 26" barrel. The 270 win is a 1-8 twist and not even going to compare because the 270 win with the 170 Bergers smokes it. so I have some data for that. I can get 75 fps +/- more with 260 Rem vs 6.5 Creed. I'll give the Creed the nod and give it 260 Rem velocity.
6.5 Creed with 142 gr ABLR Muzzel velocity approximately 2,868 fps and 2,590 ft lbs. Sea level 200 yd zero 10 mph cross wind at 1,000 yds 1,611.5 fps 819 ft lbs energy. Drift 1.59 mils, drop 7.2 mills.

So of to the 24" 270 win 1-10 twist 150 gr ABLR. 3,048 fps velocity, 3,095 for lbs energy at the muzzle. At 1000 yds 1.65 mills drift, 6.6 mills drop. Velocity 1,638 fps 894 ft lbs.

Based on the above the only area the Creedmoor wins is drift by .06 mills at 1,000 yds. The 270 win has 75 more ft lbs energy, 28 fps higher velocity. and a drop of .06 mills less drop. What does this really mean. The 270 win with a 1-10 twist beats a 260 Rem 1-8 twist to 1,000 yds. Yes inside 300 yds though the 270 win sleighs the 260 Rem. 270 win 1550 gr velocity 2,575 fps 2,208 energy MPBR 316 yds. 260 Rem 2,445 fps 1,885 ft lbs energy MPBR 300 yds.

So the 270 win is superior inside 1,000 yds They both go transonic at 1,350 yds. The 260 Rem does have an advantage thought in felt recoil. If we assume Both as 10 lbs rifles, the felt recoil for the 260 Rem loaded as above is 12.5 ft lbs recoil energy. The 270 win loaded as above 18.9 ft lbs.

If we go with a 1-8 twist 270 win with a 170 Berger we can get approximately 2,870 fps from a 24" barrel. While it is 7.0 Mills drop and 1.46 Mills drift kicks ***, and the muzzle energy is 3,100 ft lbs, the felt recoils for a 10 lbs rifle is 19.5 ft lbs. So for repetitive shooting, say a PRS Match the softer shooter is more desirable. In then end the 260 Rem is a much more efficient energy with a relatively low recoil. For hunting 270 win all day unless you are recoil sensitive.

I went with a 270 win 1-8 twist 26" barrel in my barrel change McGowen Precision 700 Remage. Al little heavy 12.4 lbs but at 2,930 fps with the 170 Berger she is a crazy performing 270 . This round generates a 16.4 lbs calculated felt recoil so with my brake I am guessing 8.2 ft lbs felt recoil. So this comparison should help someone understand the dynamics of different cartridges. inside 300 yds any of these rifles will kill if shot placement is accurate, then we can get into the 308 win and 7 -08s and alike. Accuracy kills, you can't miss fast enough.

Sounds like 270WSM performance. That's good numbers from a .270 Win for sure. I'm guessing your powder is RL26 ??? Either way it's smoking the 170 EOL. Again, no surprise. Guys that know the .270s potential, know that it's very much a LR cartridge. Unfortunately many don't jump on that wagon simply because many many more bullets are available for the 6.5/7/30s to run data on and settle on the best one performance wise. Having really only one true heavy weight .270 bullet, it's tough to do much if your barrel doesn't shoot it well. There's no others to turn too. Hopefully that changes.

 

[tomsd]

If somebody really wants to appreciate long range shooting, loyalty to old/proven - versus what is new - mayybe better - hunting pearls, , etc - this is the thread. SALUTE ALL. Wuss in SD.

 

[tomsd]

If somebody really wants to appreciate long range shooting, new stuff, loyalty to old/proven - versus what is arguably better - - hunting pearls, etc - this is the thread. SALUTE ALL. Wuss in SD.

Once a pretty fair country shooter. Wind - that God damned wind !!!

 

[ButterBean]

I just started a new thread in General Discussion that kinda pertains to this tread