For Sale Seekins PH3 New 300 wm 26" barrel

letzhunt · Mar 20, 2026

New take off 26" 300 win mag barrel for the Seekins Precision PH3.
Factory fluted barrel. Factory fired only.
Threaded 5/8x24 muzzle. Factory radial muzzle brake included but not pictured. Muzzle threads are bronze looking from an anti-seize, not rust, just hettinhvthat out there. Barrel is new as I replaces with a custom chambered barrel.

$500 Shipped

letzhunt · Mar 21, 2026

Reduced. $525 shipped . This is a brand new take off barrel

Ssteel40 · Apr 22, 2026

Hey I have a PH3 300 prc, mind if I ask you about your custom barrel? I was trying to make a custom 300 prc barrel thicker and longer but per the seekins blueprint on their website it looks like no barrel can be made much thicker due to the stock being too narrow and the action (being proprietary) not fitting in any aftermarket stock? I'm curious what contour you had made and how it fits? So my gunsmith recommended just keeping it stock

letzhunt · Apr 22, 2026

I had a Bartlein 3B made in 30 Nosler the shank is a bit longer than stock (flat portion after the threads) sobIbdidbhabe to relieve a bit of the stock webbing in the barrel channel. It took like 30 seconds with a dremel. No big deal. If you want to avoid even having to do that just have the rifle smith cut more of the shank side off then chamber it.
My question is what do you want it to be chambers in?
And what bullet are you planning to shoot? If it's 200 grains or less then shoot the factory 1 in 10 twist. If you are shooting heavier then a new barrel will be in order.

letzhunt · May 6, 2026

Reduced $500.

letzhunt · May 19, 2026

Final reduction $450 shipped. New barrel and muzzle brake.

For Sale Seekins PH3 New 300 wm 26" barrel

letzhunt

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letzhunt

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Ssteel40

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letzhunt

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letzhunt

Well-Known Member

letzhunt

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