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New 300 RUM Build

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Unread 04-06-2014, 02:31 PM
Silver Member
Join Date: Feb 2009
Posts: 405
New 300 RUM Build

My bro in law got bit by the bug from me sending him pictures of my guns and long range shooting.

He "commissioned" me to put a gun together for him...gave me no budget. He just wanted it to be big, nasty and loud.

I did all of the threading and chambering on my buddies lathe (with his assistance).

Reamer was a PTG SAMMI spec 300 RUM

Snowy Mountain Mag Action with their 20 moa steel rail (nitrided bolt and action)
PTG Bolt and pin assembly
PTG .250 Lug
Brux Barrel 1-10" (28" without brake 29.5 with. Heavy palma countour)
RWS Brake
PTG BDL bottom metal with ACIS modified mag
HS Precision stock (repainted with duracoat)
Leupold 4.5-15X50 LR scope (send it back to Leupold and had MI turrets put installed)

I had to open the ejection window of the stock because the Snowy Mountain Action has a 1/2 larger window than the Rem 700 LA.

I repainted it in OD green with slight black webbing and a few flecks of gray. It turned out pretty nice.

The magazine is a 338 Lapua ACIS that I had to modify. The Lapua case is quite a bit shorter than the 300 RUM case. The reinforcing stamp in the magazine had to be removed for the RUM case to fit.

I doesn't appear to have lost any rigidity and it works flawlessly now.

All in all it weighs 12.5 pounds and it fairly well balanced for the length of barrel.

I am going to bring it to him next weekend.

Hopefully it shoots

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Unread 04-06-2014, 10:00 PM
Platinum Member
Join Date: May 2012
Location: Southern Pines, North Carolina
Posts: 1,326
Re: New 300 RUM Build

Awesome rig. Let us know how it shoots.
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Unread 04-21-2014, 12:49 AM
Junior Member
Join Date: Feb 2014
Location: Havre, Montana
Posts: 1
Re: New 300 RUM Build

Originally Posted by 300whisper View Post
Awesome rig. Let us know how it shoots.
That's a nice looking rife ! Let us know how it shoots.
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Unread 04-28-2014, 02:43 AM
Silver Member
Join Date: Sep 2010
Location: New Zealand
Posts: 384
Re: New 300 RUM Build

Nice looking rifle
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Unread 02-17-2015, 08:08 PM
Bronze Member
Join Date: Jan 2014
Posts: 52
Re: New 300 RUM Build

Man that's a nice 300 rum
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