30-06 to 300 win. magnum - The HuntingPA.com Outdoor Community
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post #1 of 22 (permalink) Old 09-28-2016, 01:59 AM Thread Starter
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30-06 to 300 win. magnum

ok I bought a sporterized Eddystone in 30-06. Got it really cheap. Now I need another 30-06 like I need another hole in my head. I would like to have a 300 mag. What all is involved in converting one? I'm assuming rechambering and open up the bolt face. Will the extractor work? And will the feed rails need any work? Thanks, Don

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post #2 of 22 (permalink) Old 09-28-2016, 03:00 AM
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Re: 30-06 to 300 win. magnum

Ream the chamber out to .30-06 Ackley Improved and you'll have a .300 magnum for a lot less money.
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post #3 of 22 (permalink) Old 09-28-2016, 03:06 AM Thread Starter
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Re: 30-06 to 300 win. magnum

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Originally Posted by kudu58
Ream the chamber out to .30-06 Ackley Improved and you'll have a .300 magnum for a lot less money.
I don't reload yet so that probably isn't an option. I was thinking that doing a 300 mag. would be simpler to get ammo. I have a 270 weatherby mag and a 338 win. mag and they get expensive to feed. I am considering just a simple rebore to 35 whelen also. A few local shops have whelen ammo on the shelves all the time. And walmart always has 300 win mag.

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post #4 of 22 (permalink) Old 09-28-2016, 07:12 AM
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Re: 30-06 to 300 win. magnum

This would be costly because of the action work needed, not sure if that bolt has enough metal around the front to even open up that far plus magazine work, if it's wide enough to even work, plus rechamber and true the action, I think it would be cheaper to buy a T/C Compass for $299.00, it comes in 300wm..
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post #5 of 22 (permalink) Old 09-28-2016, 10:40 AM
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Re: 30-06 to 300 win. magnum

Well the chamber needs reamed and the boltface needs opened from .473 to .532". I had a 1903 Springfield and that's all it required to go from .30-06 to .308 Norma magnum. The magazine didn't even need modified. It just held less rounds

"A 30-30 is all you need. If you use a 30-06 you'll just hit a tree" -My Grandpa
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post #6 of 22 (permalink) Old 09-28-2016, 11:51 AM
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Re: 30-06 to 300 win. magnum

The Eddystone version of the Enfields wasent the strongest
of those rifles. The Remington and Winchester versions are
known to be stronger and lots of large cartridges are used
with those actions. Id be seeking the advice of a very
knowledgable gunsmith before proceeding.
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post #7 of 22 (permalink) Old 09-28-2016, 12:32 PM Thread Starter
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Re: 30-06 to 300 win. magnum

Hmm...I just called the gunsmith that put my 338 together and he gave me a price of $180- $200 to do it all

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post #8 of 22 (permalink) Old 09-28-2016, 03:15 PM
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Re: 30-06 to 300 win. magnum

The Eddystone concern was/is over cracked receivers. A lot of that is likely due to how the 1917 barrel fits to the receiver, and how some smiths removed those barrels. Since Eddystone made a LOT more than Rem/Winchester individually did, there are a lot more instances of it happening with ERA receivers.

I would not be shy of an ERA receiver, but have the smith give it a good look-see to ensure it's not twisted and/or cracked.

Other than that, the 1917 action has been used to build all manner of magnum rounds. It's long enough to run the H&H length cases, so you have a LOT of options with that receiver, assuming it checks out ok on structural integrity.
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post #9 of 22 (permalink) Old 09-28-2016, 03:21 PM
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Re: 30-06 to 300 win. magnum

Also, think hard before changing this rifle. If you plan to reload one day, my strong suggestion is have it verified as safe for a project like this, then put it away until you're a reloader.

THEN have it worked on.

Why?

Because you can do A LOT of really unique/cool/unusual stuff with a 1917.....you don't want to do it twice.

You could go into a Weatherby round, an H&H round, or any manner of wildcats or legitimate but obscure rounds. The sky's the limit with a handloader and a 1917.

If it were me, I'd be holding onto that sucker and really doing my homework to see what I'd love in a chambering, and then dive into it headfirst once you're capable of feeding that chambering with handloads.

Just a thought.
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post #10 of 22 (permalink) Old 09-28-2016, 07:21 PM Thread Starter
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Re: 30-06 to 300 win. magnum

Definitely alot to think about.I have plenty of other rifles so it can wait awhile. Lots of options to ponder. I appreciate the advice. Thanks, Don

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