I just saw the new browning add that claims that the new 270,7mm and 300 wsm's shoot flatter than the 270wby mag,7mmremmag and 300 win mag with the same bullets.Does browning really thing we are gullible enough to believe this?Sure the new wsm's are not far behind but they certainly are not faster that the larger cased magnums.It is a real shame browning is resorting to outright falsehoods to sell their product.

Yep, here's the ad:

http://www.browning.com/products/catalog/firearms/abolt/wsm/ballistics_chart.htm

The drop tables (and muzzle velocities) they cite are for 130, 140, and 180 grain bullets in the 270, 7 mm, ad 300 comparisons, respectively. I'm not a 7 mm man, but 180 grains is not a heavy bullet for a 300 magnum.

Is it possible that the WSM and Win. Mag. compare to one another as do the 308 and 30-06? Essentially the same up to a certain bullet weight, with the larger case pulling ahead significantly with heavy bullets?

H. C.

Taken from the Browning website: "However, depending on bullet weight and type, the WSM cartridges exceed the ballistics of the conventional 270 Winchester and 7mm Remington Magnum."

IOW, they probably picked the slowest loads with the bullets with the lowest BC to compare their WSMs against.

Remington pulled this crap when they launched their 7SAUMs and RUMs. They compared them to their 7mmSTW which has been throttled down since Remington first offered it.

NEVER believe the comparisons put out by gun & ammo manufacturers; confirm their claims by looking at the data in reloading manuals.

George

I'm not too much of a fan of Browning products these days. For some reason, these guys seem to feel the need to deal in half-truths in order to make a sale, which is a tactic I resent to no end.

"The Best There is!"

AD

Uhm, have you guys been living in a cave that past couple of years? This is the same BS that Winchester has been spouting ever since they launched the 300 WSM. I guess you must have missed all the Winchester adds a couple of years ago that said the same thing....

The WSM's will beat the "standard" magnums' weak-nut factory loads but they don't tell you they do it at a higher pressure. They also don't compare the WSM loads to Federal HE or Hornady Heavy Magnum loads for the others. You'll never see a 300 WSM factory load pushing a 180 at 3100 fps. But saying that doesn't sell rifles....

Right!! You can ALWAYS get higher velocities with equal pressure levels if you burn more powder!! The bigger cases WILL ALWAYS be able to beat the smaller ones, if both are loaded to equal pressures, regardless of what bullet weights we're talking about!! The advertisements are all BS, trying to make you dissatisfied with the "old, standard" magnums you have been using! If you had just stuck with the '06's and .308's, you wouldn't have this dilemma!!

[ 07-13-2002, 12:03: Message edited by: Zeke ]

Well, George, you're absolutely right about the '06, of course!! The problem is that the military always underloaded the '06, and had a half-inch of empty air space in the case, so they cut it off, and made a shorter case. It used less brass, and made it easier to design automatic weapons around the shorter case. But, as you say, the .308 will/can never equal a fully-loaded .30/'06!! An '06 can get over 2700 FPS from a 200 grain bullet; the .308 is pushing it to get over 2400 with the 200 grain.