anybody done this???.....i bought a .300 win mag here on AR a couple months ago, was going to rebarrel to .264 win mag... but after talking to a fellow ar'er here about the 6.5 x .284, i thought about a 6.5 RUM....input anybody???

Jim,

It should make the 264 caliber bullet really haul ass, at least for the couple of hundred rounds that the barrel lasts.

when are you coming back to shoot with us again???

Hey jim

If you are looking for something closer to the 6.5x284 then you should look at the 6.5 rem mag. I recently rebarreled a Browning BBR 300 win mag to 6.5 rem mag and it has the same case head so no bolt face work necessary. Also the case length of the 6.5 rem mag will give you plenty of room to load bullets way out there and still have room in the magazine.

Brass and dies would be a lot easier to come by also. The 6.5 rem mag will push a 130 gr bullet at 3100 fps easy and a 140 gr bullet at 3000 fps about the same as the 6.5x284 or the 6.5-06. It is not a barrel burner but for hunting that's all you'll ever need.

I bet it could achieve what the 25 STW claims. 4000 fps with a 100 grainer. Maybe 3500 fps with a 140 grainer with a high BC?

a 6.5RUM isn't going to do ANYTHING better than a 300RUM.

I can say this with absolute confidence because the 7mmRUM does NOTHING that the 300RUM won't do.

The 7mmRUM shoots bullets of a given sectional density to the same velocity as the 300RUM will.

Basically the 7mmRUM is already "a neck-down too far"

I really doubt using bullets 0.020" smaller will accomplish anything other than shorten further what is already a short barrel life.


I believe the biggest practical 6.5mm is the 264Win, but it really doesn't do all that much that a 6.5-06 won't.

Aside from self dilusion the 264 does almost nothing as well as the near identical 7mmRemMag.

If you ignore the fact that people who think the 140gr .264 bullets are the cats ass on all North american critters except bears, but that the 140gr 7mm bullets will "bounce off" a cow elk or Mule deer, so those people INSIST that 160 or 175gr bullets are "necissary" to make the 7mmMag "useable".

I have a 7mmMag mostly because when I found a really slick custom Rem700 rifle with a Hart barrel for an amazing deal it was already chambered in 7mmRemMag. To be honest if that exact rifle had been chambered in 264Win, 280Rem, 30-06, or 300WinMag or any of half a dozen other chamberings I still would have bought it.

infact I'd have been nearly as happy with a 280rem than 7mmMag because I already had dies and brass for a 280Rem, but a 7mmRem was my first choice.

IF your rifle is a 300Win I say use it as is.
If you want it to perform like a 264 or 7mm
load 165gr TTSX's in it and be happy.



AD

quote:

Originally posted by jimatcat:
when are you coming back to shoot with us again???

I'd love to get away but this is what my shop looks like this week:

Maybe if you had a 32" barrel. You will not even come close to any benefit from a 26". A guy at our range has a 270RUM and about 800 rounds and the barrel is toast.