@njc110381
The rifle you are confident with is the ideal plains game rifle if it has sufficient power and accuracy for the job. I used a 35 Whelen and my son used a 308 and found neither lacking.
I feel the 7mmSTW loaded with a good bullet like the 175 grain swift Aframe or a 150 or heavier Barnes would be more than enough. The 7x57 works so the STW will be even better as it fits you and you are comfortable with it. Just get plenty of practice off sticks.
Bob
bob, i believe you are right about the 7mmstw.
i have shot camels in the chest with 150 gn barnes at 3300 mv.
out to 100 yds you cannot tell the difference between that and a 375 or 9.3x64 for similar shot placement.
at further ranges past 200 they all have less effect.
the bigger calibres seem to hit a little harder out there than the stw, but the stw is easier to shoot accurately which balances out.
this raises the next point.
you mentioned point blank range in another post.
the stw can be sighted in dead on at 300 for a point blank range of 350 on bigger game.
that is a hell of a long way in the field, harder to hit well at, and harder to judge.
if you don't have time to chook around with rangefinders and other crap, rounds like the stw make a lot of sense.
that said the 340 wby is probably a far better choice for such as eland. (and camels).
the stw makes the 7x57 and 308 look like a popgun in comparison.
not only in trajectory, but in what is delivered. you can't put them in the same category.
i often hear guys state how well their small gun kills, only to find that they are quite happy to accept things running and staggering around after being hit.
morally i cannot accept that as ethical, and it makes me sick.
when there is a more deadly way it is the only way.
bruce.