Had a fella at local gun smith tell me I needed to try the Hornady gmx bullets. Not sure that's what I need in my7mm08. Need info please

Go for it...

Won't hurt anything to try them. What's the application?

Well I hunt deer here in Georgia where I live. I have just started getting some hand loads done up to see what I like best and obviously what works the best. Shots are generally short range.( under 150 yards).

I run two loads in my 7-08.
1. 140 gr. Barnes tsx with fed 210 primer and 47 gr. H4350
2. 150 gr. Nosler BT with Win. lr primers and 49.5 gr. Ramshot Hunter

Both shoot very well and deer go down quick.

I am sure GMX would work just as well. It is all in what you want to shoot and that shoots well in your rifle.

The Hornady GMX bullets are very similar to the Barnes TTSX bullets which are one of my favorite hunting bullets in my .300 Weatherby, but my Weatherby velocities are quite a bit faster than a 7-08, and I am usually hunting larger or more exotic animals than southern whitetail deer.

For hunting cartridges at sub-magnum velocities, I've had good bullet performance from cup and core bullets like the Sierra GameKing, Nosler Ballistic Tip, and Hornady SP InterLock. These bullets are about half the cost of the premium mono-metal bullets like the GMX or TSX, and they will reliably open up on thin skin animals like deer.

For whitetail using the 7mm-08 there is no reason to spend the extra bucks on premium bullets. The good old Hornady Interlock bullets are perfectly fine. I've dropped numerous deer with them with both the .243 and the 7-08. I have nothing against premium bullets. Just more than needed for whitetails. Now my exception to this is if they shoot much better out of your rifle. And the only way to know that is to try them.

As already stated, the Hornady interlocks perform great on deer. I use them for everything and they just plain work. I have and use partitions and Grand slams, but they are only used when I am in grizz's kitchen.

newbies have to spend their money on. Didn't you hear!!!!
Why no deer was ever shot in the 20th Century. And in their minds, what can ever beat the latest and the greatest.

Since those deer started wearing protection armor, the bullet armament for newbies has certainly gone up.

Ain't it the truth! Seen a couple fellows last season that were hunting with a 30 378 and a 338 378 Weatherby. Those deer have become so tough that I might have to invest in a 460 to be eating venison. I feel sorry for the poor hunters using the black powder after these new developments. They will never eat venison again unless some good hearted fellow hunter donates some of their harvest to them!