.338 RPM on 30-06 action?

tkat

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Aug 3, 2024
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Has anyone put together a .338 RPM on a standard 30-06 action? It looks like it would be viable, but possibly a tight fit?
 
I turned my winchester model 70 stainless classic 30-06 into a 338 wby rpm. I haven't shot it alot yet. But it has functioned good so far. 24 inch barrel and it gets box velocity on the garmin. 225 accubond 2825 fps
 
I don’t have one yet of any flavor, but the RPM case has to be the most interesting thing to come along in the past decade. What a neat project.

The 338” cartridges have taken a beating lately with poor availability and interest in all the small bores, but 210 to 225 gr bullets at 338 Win mag velocities simply work well. My first big cartridge was going to be a shiny new Ruger 300 win mag, but when I had the money together it was sold so I bought the 338 instead and I’ve been in love with that bore size ever since. Prairie dog, coyote, badger, fox, antelope, deer, elk and it was a very popular loaner rifle. Sometimes it killed 3x as many elk as I did.

Make no mistake it has healthy recoil and to be honest it took me a few hundred rounds to get over a flinch, and every spring it took another hundred rounds with plenty of dummy cartridges mixed in. That wasn’t, and isn’t a big deal and it never took much arm twisting to get me out to the range or shooting rocks. A smaller training rifle, a shoulder shield pad, scope with good eye relief, and some dummy cartridges are standard equipment. A high performance motor cycle or snow machine takes a little to get back in the swing of things, but that doesn’t mean someone should avoid horsepower.

Punching an elk tag requires also finding the dang thing after the shot, so when a bull was looking directly at me in the thick timber, it was ideal and the Partition came out a hind quarter and it still went 75 yards. Every year here guys have a tough angled shot and never recover it, sometimes with miles of tracking.

I can’t wait for a 338 RPM barrel to come along for my switch barrel gun.
 
Kind of off topic, but one thing I really like about the RPM case is it has a healthy amount of taper (.013” per inch) so clickers will be less common than the PRC cartridges, which only have something like .008” per inch. Good common sense design.
 
Is there aftermarket brass available for the 338 RPM?
I'd hate to have to pay Weatherby prices to feed it even it is just buying the first 100 rounds to have the brass.
 
If you want a .473 338 the 338-06, A square or AI, would be a better choice. The rpm case is a pain in the ass and expensive for ~100 fps
The 06’ based cases feed and extract much better and are dirt cheap in comparison.


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