Bedding my Remington 700 SPS AAC-SD Tactical

Trinimon

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I figured I'd post this here than in the precision section 'cause most feel that this rifle is more a sporting rifle than a tack driver.

Bought me a new Remy 700 SPS Tac few weeks ago and took it to the range. Out of the box with a cheap scope and that flexible Hogue stock and cheap hunting ammo all added up to bad groupings around 1.75" at 100yrds. I figured I always wanted to tinker with bedding a rifle and I might eventually upgrade the Hogue stock so figured this was a great time to practice. If I ruin the stock, no biggie.

Here's some pics and description of what I did. I'm sure there are mistakes made but it's an experiment. :p

Prepped the stock by sanding down the smooth plastic parts that would bond with the bedding material. In this case, it was JB Weld. Drilled some small indentations about a 1.5mm deep so the JB Weld would have more to hold onto. Wiped the entire bedding area down with rubbing alcohol to remove and oils/grease. All areas to be bedded was taped up before all voids were filled in using modeling clay. This was to prevent any contamination to the already prepped bedding areas. Built a dam just in front of the recoil lug to add support/resistance and removed the trigger assembly. Several wraps of tape was added to the barrel to ensure that it sat in the middle of the stock while the bedding cured and that the action was sitting level with the stock. Two bolts (1/4x28tpi) were screwed into the action so that seating it into the stock would be easier than trying to line up the bolt holes and action with the bedding material all over the place. Not to mention, accidentally pushing JB Weld into the bolt holes and threads and causing possible headaches taking it apart later. The sides and bottom ares of the action and barrel area was wiped down with a generous amount of paste wax as the release agent. Total prep time was just under 4hrs.

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Once the action and stock have been mated. I removed the rear guide bolt and replaced it with the regular bolt and snugged it down just finger tight. The stock was taped down then I added a few tight wraps of electrical tape to aid in some compression. Not sure if that's recommended to do or not. Cleaned out the squeeze out with WD40 soaked Q-tips. My personal tip when using epoxy is don't toss out your extra epoxy! Set it aside to cure along with what you were working on this way you can then gauge how cured your mix is without poking around the work that's curing.

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After setting for 8hrs, I removed the action from the stock. Cleaned out the extra squeeze out and tidy up the mag well and other areas that don't need bedding. Cleaned up the action and removed all the modeling clay.

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An update on my bedding project.

Got my EGW once-piece rail and sure enough as others have pointed out, the rear part of the action is lower than the front. Tightening the screw down on the front and rear would definitely cause the rail to bow slightly.

With just the front part of the rail screwed down, you can see the gap between the rail and action.

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I used an engineer's square (0.0001" straight) to verify that my rail was flat and not warped.

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Prepping the action and rail for bedding. Plugged the screw holes with some modeling clay and wiped the lower action down with paste wax as the release agent.

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Cleaned up the excess with a Q-tip soaked with WD40.

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All cleaned up with the scope mounted. :)

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Now to hit the range and see if there are any improvements then I have to start working on getting into reloading. :p
 
I was at the range last week Wed and tried to sight in my rifle. Not sure WTF was going, maybe a defective scope or crappy shooter but couldn't get the scope dialed in.

In the process got this fluke 3 rnd group at 100yrds using Winchester SuperX 180gr ammo. I'll try again next trip out to the range and see if it is repeatable.

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My project is almost done. Got my Timney trigger from Accurate Action today so next step is maybe a stock upgrade and further down the line might be a barrel upgrade but so far, I'm pretty happy about the result.

Worked up some reloads for testing and shot a couple groups this past Saturday at Silverdale. The 100/200 yrd range was PACKED so I went over to the 100M range. The middle few are from sighting in the scope which I accidentally bumped when I was setting the turrets to the zero mark. Doh!

Bullet: 168g Sierra MatchKing
Powder: 41gr and 41.5gr Hodgedon H4895
Distance to target: 100M
Shots per group: 5

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those groups look pretty good. I live in Edmonton but wondering if you bought the bedding compound from a common retailer, canadian tire ,wholesale etc. I think I might attempt by scope base as well.

Evan
 
Thanks. Out of the box, I was shooting 1 3/4" groups at 100yrds so this is a big improvement.

I just bought JB Weld from Canadian Tire which I think is on sale this week too! Not much required JB for the scope base, maybe about 1/2" (or less) length of hardener and resin each.
 
Thanks guys. Yup, got some rounds made up in .5gr increments for H4895 behind a 168gr SMK. Installed my Timney trigger the other night and I'm looking forward to doing some more testing. The bedding job seems to be holding up and making quite an improvement. Maybe I don't need to upgrade that Hogue stock... Haha, who am I kidding. lol
 
Thanks guys. Yup, got some rounds made up in .5gr increments for H4895 behind a 168gr SMK. Installed my Timney trigger the other night and I'm looking forward to doing some more testing. The bedding job seems to be holding up and making quite an improvement. Maybe I don't need to upgrade that Hogue stock... Haha, who am I kidding. lol

No end in site..lol
 
Nice groups. To properly measure group size, you measure the outside to outside of the total group on paper and subtract the bullet diameter.
 
Nice groups. One question, are you sighting in your rifle off of a bag, lead sled, or bi-pod? I'm just asking cause if you are going to use a bi-pod there could be a chance the flex in the fore-end would still affect your groups. Cousin has the same rifle and got fed up with the stock and upgraded to the Houge Aluminum bedded stock. Problem solved.

Nice job on the bedding.
 
Thanks. Yeah, I'm going to upgrade the stock eventually (fairly soon) to a Bell & Carlson one. After I bedded the rifle, the front stock does not easily make contact with the barrel either from a bag or off the bipod. I shot that group off a bench rest.
 
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