The .308 Marlin Express is a classic case of
re-inventing the wheel. Once upon a time, there was the Model 99 Savage lever gun.
It was chambered in .300 Savage...then later, Savage chambered it for .308 Winchester.
This pretty much killed off the .300 Savage round.
The .300 Savage and the .308 Marlin Express are very, very close to each
other in ballistics performance. ( And both thus are a bit less powerful than
the .308 Winchester. )
Alas, as time went on, Savage determined that it cost too much to produce the Model 99,
and it was discontinued. This rifle had a rotary magazine, and so was able to use
pointed bullets. Normal, easily available pointed bullets that is.
There was also the Winchester Model 88 lever gun. Sadly, this too was dropped years
ago. I knew a guy that had one in .308 Win. It would group 1 inch @ 100 yards.
It's magazine also allowed the use of pointed bullets.
Not only is the new Marlin round locked into the factory load with a single
bullet weight, it is also loaded with powder not available to the reloader.
Thus, I'm not too sure you can match the factory specs with a reload to start with,
regardless of the bullet used. And if you can, there are still no pointed bullets you can
safely use, unless maybe you restrict the gun to a two shooter.
If you don't reload, and if the only factory load you can get shoots well enough,
then I guess you'll be ok.
The Browning lever gun is available in
.308 Winchester. The magazine of this rifle also allows the safe use of pointed bullets.
( Not saying the Browning looks that good to me though, kinda ugly. )
I guess you could say that Marlin is trying to fill the gap left by the demise
of the Model 99 and the Model 88 in a way.
What cracks me up is the way that some people get excited about the .308 Marlin
Express ballistics. They may have never known ( or forgotten ) that the .300 Savage
was there first, and lost out to the .308 Winchester years ago.
But now the .308 Marlin Express is looked upon as a big deal.
The .300 Sav. was introduced way back in 1921...
The new 7th Edition Hornady manual shows a 165 grain bullet
can be pushed to 2,600 fps in the .300 Savage with a 22 inch bbl.
A bit shorter bbl than the Marlin XLR. ( 24 inch barrel there )
Virtually identical performance of the .308 Marlin Express.