I am looking to get a new deer rifle to use in Wyoming for Mule Deer, Antelope and Whitetails. My dad was there this year and used his .270 to kill a mule deer and antelope at 200 to 300 yards. I have a .270 that I use for whitetails here in PA, but I am thinking about getting another rifle. I really like the .270 caliber, but I was wondering if I should get something a little bigger for the longer shots. Any recommendations on a caliber? I would also like to use the new gun for whitetails here in PA as well. thanks in advance.

a .270 will be effective downrange as far as most of us need to shoot (out to 400 yds). I shoot a .270 WSM and the ballistics are a little better than the .270, but I think it may be a little overkill. The big magnums will have better knockdown at distance, but the average guy will tend to be bothered by the recoil enough for it to affect their accuracy. And accuracy is the most important factor when shooting longer distances. If you can handle a 300 WM, then shoot it. Getting familiar with your .270 and how it shoots downrange will produce just as well, as long as you are comfortable with it.

I agree with bigangry. Your .270 should do the job for you as long as you understand it's ballistics. The 300 Mag is a great gun with lots of pop, but as he said be ready for some serious recoil.

Use your money for something else you might need like a good backpack, binoculars, membership to a gym, and use your .270.
If you really just want a new rifle, a .300wsm would work very nicely and they don't kick like a .300 win mag.

I certainly am not an expert on hunting mule deer. I have been onlyfour times. From that limited expereince, unless you are just looking for an excuse to buy a new rifle, your 270 Win. is plenty good. Not sure what type of terrain you will be hunting. I hunted in eastern Montana exclusively. Very wide open. I practiced a bunch at 300 and 400 yards, however my 4 shots (one on each trip) were about 85 yards, 125 yards, 325 yards and 200 yards.I used a 308 Win. on 3 of those trips and a 300 Win. Mag. on the other.

My 3 buddies that went with me, ironically, were all using rifles in a 270 Win. One dropped his buck at about 225 and the other at about 325. The other lost patience and decided to burn his "deer tag" on a fair 10 pt. white tail. Neither mule deer buck went out of sight.

I would suggest you use a quality, conrolled expansion bullet. A 130 gr. Partition for example would do fine.

To echo "Handles", if you have the extra $$$ for a new rifle/scope combo and decide to froe go a new rifle,and do not now have high quality binos, I would spend that $$$ on glass.I did just that after the first trip out and all the $$$ I spent, that was the bestmove I made.

I agree with everyone else the 270 has the pwer to handle deer out past 700 yards if you practice enough. If you just want a new biggergun I can't argue with that (300 wby on the way) look at a 270WSM or a 7 mm Mag.

I use a 130 grain Hornady interbond in a light magnum round (in .270 caliber) for my long range white-tail shooting. Zeroed at 200 yards, it only has a 5" drop at 300 yards and a 16.5" drop at 400 yards while retaining 1671 lb of energy. When I eventually start mule deer hunting, this is the round I'll use

7MAG

i would stick with the .270 but if you wanted something bigger go with the .308

I use a 7mm rem mag you wont regret getting one.