308 vs. 7.5x55
- Thread starter gcp
- Start date
Re: 308 vs. 7.5x55
Ballistically they will be pretty much identical.
.308Win: Higher peak operating pressure.
7.5x55: Lower peak operating pressure but more case capacity.
The 7.5x55mm case is VERY similar to a .284Win case necked up to .308". As a matter of fact, many used to do just that to get reloadable 7.5x55 cases (before they became easily available).
If you chambered a modern bolt action in 7.5x55 (with higher pressures), should run like a 30/06.
Ballistically they will be pretty much identical.
.308Win: Higher peak operating pressure.
7.5x55: Lower peak operating pressure but more case capacity.
The 7.5x55mm case is VERY similar to a .284Win case necked up to .308". As a matter of fact, many used to do just that to get reloadable 7.5x55 cases (before they became easily available).
If you chambered a modern bolt action in 7.5x55 (with higher pressures), should run like a 30/06.
Re: 308 vs. 7.5x55
I use 284 brass in the 7.5, and that costs money.
Mounting a scope on a K31 is problematic.
I have plenty of 308 brass lying around.
I have plenty of 308s with scope mounts.
I use 284 brass in the 7.5, and that costs money.
Mounting a scope on a K31 is problematic.
I have plenty of 308 brass lying around.
I have plenty of 308s with scope mounts.
Re: 308 vs. 7.5x55
It's not problematic to mount a scope or diopters on a K31, you just have to know where to look. But the above not withstanding, is convenience the only major reason to go with 308?
More pics at http://smg.photobucket.com/albums/0703/George/5R/
It's not problematic to mount a scope or diopters on a K31, you just have to know where to look. But the above not withstanding, is convenience the only major reason to go with 308?
More pics at http://smg.photobucket.com/albums/0703/George/5R/
Re: 308 vs. 7.5x55
Both are very similar in performance as laoded. But 7.5 can be loaded to hiher velocities in a more modern action.
Both are very similar in performance as laoded. But 7.5 can be loaded to hiher velocities in a more modern action.
Re: 308 vs. 7.5x55
Sergeant, you're dead on, QuickLOAD graphs indicate exactly that. I'll have shooting comparisons between the two platforms as soon as I am able to reload & shoot both with similar loads. The 7.5x55 has long been my favorite but the accuracy of my new 5R has surely attracted me to the 308.
Sergeant, you're dead on, QuickLOAD graphs indicate exactly that. I'll have shooting comparisons between the two platforms as soon as I am able to reload & shoot both with similar loads. The 7.5x55 has long been my favorite but the accuracy of my new 5R has surely attracted me to the 308.
