Model 110 Long Action Flatback 300 BLK Re-Build

[rbp75503]

Savage Model 110 Long Action Flat Back 300 BLK Specifications


Pawnshop find, originally 243 Winchester caliber with Bushnell 3x9 Sportfield Scope.
Removed factory barrel (rust and pitting).
McGowen varmint contour 16.5" 1-7" SS Barrel w/muzzle 5/8"-24 threads from GunShack.
PT&G .223 long action bolthead from Pacific Tool & Gauge.
Ejector/extractor kit from Gunshack.
Glades Armory Tactical Bolt Handle.
Sav-2 Trigger set at 1 lb 8 ounces.
Northland Shooters Supply Barrel Lug and Nut.
Boyds Prairie Hunter Stock in Pepper.
CDI Precision model 110 long/short action bottom metal.
MDT 223/300Blk magazine

Completely disassembled rifle
Removed staggerfeed mag box
Polished bolt body with polishing compound
Placed parts in ultrasonic cleaner for 2 sessions of 30 minutes each


Opened Stock barrel channel for varmint contour.
Grind off index key on inside of bolt body to accommodate PT&G bolthead.
Sent stock, receiver, and bolt to CDI for inletting of bottom metal
CDI installed pillars



Ready for bedding epoxy


Bedding cleaned up and ready for barreled action.



1st attempt at installing scope.


Decided to chuck the weaver scope bases and go with an EGW rail. So scope and weaver scope mounts have been removed and I am now waiting for EGW scope rail to be delivered.

[RC20]

Very nice. Thanks for sharing.

[s3silver]

Nice. Any reason you decided to do a 300 blk on a long action?

[rbp75503]

Most importantly the price was right on the flatback LA. I really like flatback actions rather than the round actions. Plus stock options are better with the long action bolt spacing of 5" than the intermediate action bolt spacing of 4.5"

Nice. Any reason you decided to do a 300 blk on a long action?

[rbp75503]

First trip to the range I was having problems with the 300 BLK rounds nosediving in the MDT magazine after the 1st round was chambered. I tried a work around of placing 4 empty 223 cases before loading the 300 BLK rounds into the mag. That kept the BLK rounds from nosediving in the mag.

I ended up pulling the mag apart and squeezed the spring with needle nose pliers next to the follower so that the spring was canted to the front as shown in the following image. That has solved the nosediving of rounds in the mag.

[30-06shooter]

How did it shoot?

[rbp75503]

How did it shoot?

Not to my expectations yet. Only shot 35 rounds, 5 of which were zeroing, rest load development 5 shot groups. Noticed that after 3 rounds barrel heat seem to be affecting POI. The Spear 125gr TNT are a proven load in my MSR upper so that combination might be better with different loadings. The 110gr Barnes AAC300s are the start of different rounds that I have loaded up to find the best combination.