Welcome to both you guys. The 7mm-08 is not a lot unlike the 7x57. I used to shoot 154 gr bullets in my 7x57's because they shot so well. But I think if I could have got the 139/140 gr bullets to shoot better, I'd have used them more.
I'd stick with whatever you are shooting now. The 7mm - 08 is plenty of rifle for antelope with any hunting bullet. Accuracy and knowing the rifle and how it shoots are far more important than anything.
Federal Premium 140 grain with Nosler Balistic Tips or Winchester Supreme with 140 grain Balistic Silvertips. Either one of these should be very accurate, give you great long range performance, and be just the right type of bullet to take down your 'lope. Have a great hunt!
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...