bigcountry

Oh my gosh, how are all you guys getting >3400fps with 180gr bullets. Out of all three of the bores I have shot thru, I either get pressure signs at 3300fps or accuracy goes down hill. I have tried Re25 (fastest velocity), retumbo, H1000, and Re22, and IMR4350.

stubblejumper

Big country-My two 300 ultramags have 26" pac-nor barrels.One rifle produces 3375fps with 96gr of r-25 while the other produces 3395fps with 95gr of r-25.These readings were taken at 60 degrees so with a little warmer weather 3400fps would be easily reached.Neither gun shows any pressure signs with these loads and three shot groups average 1/2" with both rifles.My friends son uses 95gr of r-25 in his factory remington 700bdl ls and his velocity is just over 3300fps.The high quality barrel and tighter chamber of my custom rifles do seem to add a little velocity without sacrificing accuracy.

BarnesX.308

That' s pretty fast. What kind of velocities are you getting with 150 grains? I shoot 150gr Barnes X bullets in my 300 Wby. The manual claims 3450 with my load but I' ve never chronographed them.

Scott Meier
White Oak Lodge

bigcountry

Maybe since my throat is much shorter than " factory" specs with my 300RUM Custom with Kreiger barrel I can' t reach these velocities. I reached these velocities with 96gr of Re25 also with Speer grandslams, but can' t really do it with Noslers or accubonds.

Briman

Not my writing, but that of Col. Jeff Copper:

You have heard, perhaps, of the new Remington 300 " Ultra Magnum." This uses the unbelted 404 Jeffrey case necked down to 30 caliber, to start the good old 180-grain Spitzer bullet at 3300f/s. (Wow!) Here we have an ideal example of an answer in search of a question. It has long been obvious that if you want more power than available in the 30-06 you do not want more velocity, you want more bullet mass. This should be obvious to anyone who really uses rifles on live targets, but apparently it is not. When you ask, " What is it for?" the answer is " It' s to sell, stupid! Why else do we make anything?"

bigcountry

Boy, its a good thing I don' t make up my mind based off the writings and livings of other people like this Col. I don' t even watch football or baseball or basketball on TV, because I just don' t like living thru other people even though I played all sports growing up. I like to go out live my life and find out things on my own. The masses that this Col writes too are in my opinion Sheep. He too seems to have something to sell it sounds like.

The good Col Jeff Copper should learn that velocity kills. His statement lacks alot of merit.

James B

He is the master of big bullets which also kill. Anything he has not learned in his first 94 years, he will most likely never learned. Don' t believe he needs to know much more than he does. I am proud to have been one of his sheep for many years of combat shooting. Long live the 1911!!!

BarnesX.308

Big bullets kill. Velocity kills. If you have both, you should be in pretty good shape

Scott Meier
White Oak Lodge

stubblejumper

A .308" -180gr bullet will easily kill any north american game animal if it is of proper construction and driven at sufficient velocityThe 300 ultramag easily provides sufficient velocity..

neweboarhunter

Velocity will only take you so far. Heavier bullets driven at an adequate speed and of larger diameter will do two things 1. penetrate farther 2. create a larger diameter wound channel. IMHO I see no need for the whole R.U.M. lineup save the .375. LOL NBH.