270 or 308

[Heym SR20]

..

 

[Smellydog]

i do , the wonderful .222 was the benchrest darling for years until the 6 ppc came along

there is a case to be made for case shape (see what i did there !)

we understand internal ballistics better today

Wasn't it the 22 PPC first?

I also think a 222 bench rest rifle with some special treatment will still be in the running here and there.

 

[takbok]

270 130gr vs 308 125gr (like for like or as near as poss) both 200m zeros (both factory loads in the interests of fairness)

100m/200m/300m
270 - +1.59''/0.00/-2.35''
308 - +1.51''/0.00/-2.33''

anyone able to hold better than 0.02'' at 300m ?

Something not right with these 300m drops - be a dream if rifles shot that flat.

 

[takbok]

270 zeroed at 200m with 110gr bullet for me

 

[Mungo]

I have 3 270 rifles, after testing a few factory cartridges locally available over the chronno, the 270's went into the back corner of the safe. Much better off with 168gr in 308. In the meantime I also use a 6.5CM with high bc bullets as well as a 300wm for longer shots. I think the 6.5PRC will take off and can replace what a 270 should have been.
edi

Ever since I got a 6.5PRC I’ve felt that it does what everyone wants to believe a .270 does.

It’s just about perfect as a hill rifle.

 

[Carlbrit]

270 would be the ticket and pair as others have said with your 243, just like a 30-06 would pair well with a 6.5 creed or 6.5x55 swede.

270 isn't the massive recoil fiend people make it out to be in a correct weighted rifle decent sound moderator it is nice to shoot,
a schultz and larsen is particularly a very nice rifle to have in 270, then again so is a sako 75 or a tikka 695.

308 does give more ammunition options however using standard weight bullets 150gr/165gr/168gr etc it's not as flat got a bit of a curved trajectory in those bullet weights
I've fired a couple of 308's over the years a rem VTR with the integrated muzzle break, an old parker hale they weren't unpleasant to fire.

I'd pick 270 saying you already have 243 but let us know how you get on

I have come over from the dark side of owning a 6.5Creedmoor and now have a .270 Tikka 695.
The 695 is so much more of a rifle than the Creedmoor was.
I'm using Federal Powershok 130grain, they are clover leafing at 100yards, also really impressed with it at long range too.
The recoil is negligible, in my opinion go for a .270 all day long.

 

[Smellydog]

Something not right with these 300m drops - be a dream if rifles shot that flat.

Agreed.
I use to shoot a 308 and 110vmax from a 20" barrel for 3100fps.
Zero +1.5"@100.
-2"@200.
-12"@300.....if I remember correctly.

 

[tackb]

Wasn't it the 22 PPC first?

I also think a 222 bench rest rifle with some special treatment will still be in the running here and there.

just have a look at the current world records

sadly no 222

 

[tackb]

Something not right with these 300m drops - be a dream if rifles shot that flat.

i just took them out of the ballistic app i use , i will double check

my point still stands though, like for like bullet weights and you'll see negligable difference

 

[tackb]

Something not right with these 300m drops - be a dream if rifles shot that flat.

i have spotted my error , i've put inches for drop when its MOA , my bad

 

[tackb]

Agreed.
I use to shoot a 308 and 110vmax from a 20" barrel for 3100fps.
Zero +1.5"@100.
-2"@200.
-12"@300.....if I remember correctly.

it's nearer 2-0-9 , 2'' high at 100m, zero at 200m, then 9'' drop at 300m , works for nearly all normal stalking calibres , certainly for a boiler room hit

 

[tackb]

270 130gr vs 308 125gr (like for like or as near as poss) both 200m zeros (both factory loads in the interests of fairness)

100m/200m/300m
270 - +1.59''/0.00/-2.35''
308 - +1.51''/0.00/-2.33''

anyone able to hold better than 0.02'' at 300m ?

you can mess around cherry picking loads that are way off like for like to prove your argument but none of it makes the 270 more versatile !

if you want versatility then it has to be the 308 all day long , you can have it as a flat shooting '270' or as a 200gr short range thumper for the woods or even a long range target round , it's up to you.

the 270 is a great round just not the wonder round people would have you believe

updated now for correct info , my bad ( i was hungry , i have eaten now!)


100m/200m/300m
270 - +1.8''/0.0''/ -8.3''
308 - +1.74''/0.0''/-8.03''

 

[Smellydog]

just have a look at the current world records

sadly no 222

There are many reasons why it's not as popular and very little to do with case design.
6mm PPC is arguably better in a wind and has more steam for 200yd shots.

When someone comes along and wins with a .25 something or a .20 something the rest will follow.
It's not just case design, there are other factors.
If it were case design why haven't we simply expanded the PPC case design to suit everything?

 

[tackb]

There are many reasons why it's not as popular and very little to do with case design.
6mm PPC is arguably better in a wind and has more steam for 200yd shots.

When someone comes along and wins with a .25 something or a .20 something the rest will follow.
It's not just case design, there are other factors.
If it were case design why haven't we simply expanded the PPC case design to suit everything?

we kind of have , have you noticed the move towards sharper shoulders slightly longer necks ?

it seems to help with accuracy and benefits case life as well

what are the many reasons it's not as popular other than case design ?

 

[Smellydog]

we kind of have , have you noticed the move towards sharper shoulders slightly longer necks ?

it seems to help with accuracy and benefits case life as well

what are the many reasons it's not as popular other than case design ?

PO Ackley was doing sharper shoulders last century.
I mentioned some reasons, for longer range matches PPC bucks the wind a little better, that's not a real feature of case design.
A 222 at 100 most probably can match a PPC, as long as it's not to windy.
Herd mentality. As soon as someone wins with like for arguments sake, a 22 hornet, some will go out and build a hornet bench rifle.
As for move towards long necks....it's more like a return to long necks, hence why I said in a round about way, it's all nothing new. Most old cases had long necks.

 

[tackb]

PO Ackley was doing sharper shoulders last century.
I mentioned some reasons, for longer range matches PPC bucks the wind a little better, that's not a real feature of case design.
A 222 at 100 most probably can match a PPC, as long as it's not to windy.
Herd mentality. As soon as someone wins with like for arguments sake, a 22 hornet, some will go out and build a hornet bench rifle.
As for move towards long necks....it's more like a return to long necks, hence why I said in a round about way, it's all nothing new. Most old cases had long necks.

there is a lean towards ackleys findings agreed , just look at modern cartridge designs , acklys findings were that old cartridges could be improved by changing the case shape , whats your point?

if the 222 could match the current world record holders they would.

there is a reason that the herd uses the winning calibres because they are usually better , it's clear you don't like to follow the herd but also clear you are not winning benchrest world titles if you were trying to i bet you wouldn't be using a 222 if you were serious..........

when tiny margins matter case shape will be considered and people don't doggedly persue old fashioned designs

 

[Smellydog]

there is a lean towards ackleys findings agreed , just look at modern cartridge designs , acklys findings were that old cartridges could be improved by changing the case shape , whats your point?

if the 222 could match the current world record holders they would.

there is a reason that the herd uses the winning calibres because they are usually better , it's clear you don't like to follow the herd but also clear you are not winning benchrest world titles if you were trying to i bet you wouldn't be using a 222 if you were serious..........

when tiny margins matter case shape will be considered and people don't doggedly persue old fashioned designs

Fair enough

I understood that Ackley was after increased ballistic performance, not necessarily improved accuracy.

 

[Alhamander]

270 zeroed at 200m with 110gr bullet for me

May I ask what you are shooting with that bullet? Also deer (and if so how big i.e. Reds/Sika...)? I've a .270 on order and looking into bullet options (probably in copper). Cheers.

 

[takbok]

May I ask what you are shooting with that bullet? Also deer (and if so how big i.e. Reds/Sika...)? I've a .270 on order and looking into bullet options (probably in copper). Cheers.

Hi, I use 110gr GS Custom copper bullets at around 3400 fps for red, sika and roe. Friends use the 110gr Barnes TTSX similarly - perfect for UK stalking. My rifle is a fairly accurate old Tikka T3 lite with 22.4" barrel.

 

[paulbshooting]

What weight ammo do you use in your 308 ?

150 lead, hand loaded. Will be trying 165 grain lead shortly and 150 grain Fox copper