All I use in my Marlin 336 30.30 is LeverEvolution...and last year switched from the 160s to the 140 GMX with its flex tip.
With the 160s, sighted in 3" high at 100 yds, it's dead on at 200 yds. And if I'm up to it, my Marlin will shoot 1" groups with 'em. (It's scoped...)
IMHO, this ammo turned my rifle into a legit 250 hunting rifle. Over my 40 odd years of hunting/shooting a 30.30 has never been considered better than a 150 yd rifle at best.
What's important is that this ammo holds up at 200 yds in energy, and is still pushing 1000 ft/lbs at 300 yds.
http://www.hornady.com/store/30-30-Win-160-gr-FTX-LEVERevolution/Given that 1000 ft/lbs is widely regarded at a good minimum for deer, how is this not a terrific improvement???
Federal Nosler 170s don't come even close to matching downrange ballistics.
http://www.federalpremium.com/products/details/rifle.aspx?id=302Tad ironic that just about every cartridge under the sun has been "Ackley Improved" to gain usually about 100 ft/sec, but ammo available over the counter that can add upwards of 400 ft/sec downrange, and thereby lift caliber/rifle that's been around for 100 years to a whole other playing field, is no big deal.
Personally, I tip my hat to Hornady for thinking outside the proverbial box and breathing new life into lever guns.
And from what I've read about lever actions sales since the LeverEvolution came out, I don't doubt the folks at Marlin regularly send some hugs and kisses their way, too.