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shaman Offline OP
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[Linked Image]

As you may all remember, I set out several years ago to purposely improve my accuracy. Y'all suggested a RAR Predator in 223 Rem as a cheap, easy way to get going. Steps I've taken so far:

1) Acquired the RAR Predator
2) Built 100-yard target frames at 90 Deg so I can best deal with the wind
3) Added a better front and rear bag arrangement to the bench
4) Secured a good supply of single-headstamp brass
5) Re-stocked the RAR Predator in a Boyd's AT-One stock
6) Built a rear elevation platform to raise the rear bag

Yesterday was supposed to be the culmination of all this work. It was going to be a 95 F scorcher. I had a bunch of chores to do at the farm; this was just one of many. As soon as the sun rose, I got going setting up. This was a rarity: it was dead calm.

I had two loads to test:[Linked Image]

RP Brass, H4895, CCI 400 Primers.

25.5 gr H4895, 55 gr Hornady FMJBT
24.5 gr H4895, 62 gr Hornady SPBT

[Linked Image]


I made two 5-round groups with each:

1) 55 grain
2) 62 grain
3) 55 grain
4) 62 grain

1 and 2 were made without worrying about the barrel heating. I wasn't rushing, but I was not waiting for the barrel to cool
3 and 4 were made with several minutes between each shot. By this time I was on the Cub Cadet, mowing the yard. I'd stop every 10 minutes or so and take a shot.

By the time I got to 3 and 4, the temperature was climbing to near 80F. The heat mirage, even at 100 yards, was getting hard to deal with. After the second target, I decided to call it quits. The best thing about this shoot was that with the new rear bag elevator, I could walk away from the rifle, and the scope was still roughly on the target when I got back.

If this were a deer rifle, I'd call it quits and go hunting. However, I'm trying for the first time in my life to actually minimize the group.

In the past, I've gotten better groups out of this rifle. It is recently re-stocked. This is the first time I've really sat down and tested it.

My questions to y'all are as follows:

Given those 4 groups, how would y'all proceed?
To what do y'all make of the stringing? Is it the rifle? The load? The nut holding the rifle?


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Did you skim bed the action?


I am continually astounded at how quickly people make up their minds on little evidence or none at all.
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Ist...did you make and call all GOOD shots? Don`t fool with anything till you`ve done that.

If you did that..call all good shots...IMO you have a bedding problem.

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Well, just me but I would not consider that to be hunting accurate let alone target accurate.

What is the diameter of the circles?

What kind of accuracy did you get before you re-stocked? Same scope?

Have any factory match ammo on hand?

Did you check concentricity on the handloads?

Target and TAC are good powders BUT I doubt powder is the problem.

Any binding on the action after you bedded it?

Those laminated stocks are stiff but make sure you are not getting contact when you squeeze the barrel and forend together.





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If you are shooting the rifle how it sits in the picture, I could see that as a problem. In regards to the rear bag set up I don’t see how that could be comfortable to shoot from, which could lead to poor results. If my assessment is wrong disregard.

I have found the best and quickest way to learn to do anything is to spend some time with someone who is good at what your trying to accomplish. Find a local that shoots a lot and is good at it. By whatever means, get some teaching from them. Ask to shoot one of there proven accurate rifles to get your technique down. Then ask them to shoot your rifle and see if they can tweak it if necessary. If you don’t know anyone, maybe you could pay a gunsmith to help you with the above. If they are good it would be money well spent.

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shaman Offline OP
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I'll try and answer these the best I can.

1) I bedded the action. There were two metal blocks that Boyd's said required bedding. It is through them the two action screws are inserted, one to either end of the magazine well. I hogged out another few inches of stock-- about 2 inches of barrel and bedded that as well. It's free ($1 bill or more) from there on out.

2) There was only one shot that I know I jerked. That was on the first target/first load, it went left of center. The big problem was the heat mirage. That made the bullseye dance every which-way.

3) The target is printed on 8.5X11. Those are 1/2 inch circles (give or take)

4) The concentricity of the loads was good .001 to .002. I used the Lee neck die on the brass.

5) No, I do not have any match ammo handy, but I do have some ammo that shot considerably better from a few weeks ago. It was loaded on the Hornady LNL AP with BL-C(2).

6) The rear rest is as comfortable as any. I'm rather tall. The big problem is the 100 yard target stand is downhill from the bench.

7) There was some binding on the action when I screwed everything together after bedding. However, I loosened the screws a half-turn, and everything was fine.


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Originally Posted by shaman




7) There was some binding on the action when I screwed everything together after bedding. However, I loosened the screws a half-turn, and everything was fine.



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Originally Posted by RemModel8
Originally Posted by shaman




7) There was some binding on the action when I screwed everything together after bedding. However, I loosened the screws a half-turn, and everything was fine.




Bingo!


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When you tighten down the action each screw should go from loose to tight in about 1/2 turn or less. Check it by torqueing the front screw then tightening the rear screw. Now loosen everything up and torque the rear screw and tighten the front screw. In each case when tightening the second screw it should go from loose to tight in 1/2 turn and come up solid. If it doesn't, you have a bedding problem.


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If there are swivel studs on the stock, you need to find a way so they’re not touching the bags either as you’re aiming or during recoil.


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+1 to above plus this. Just because a dollar bill passes under the barrel it does not mean the free float is a done deal. Try squeezing the end of the fore end and barrel together. There should be enough free float so the barrel and tip do not touch.


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shaman Offline OP
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Originally Posted by navlav8r
If there are swivel studs on the stock, you need to find a way so they’re not touching the bags either as you’re aiming or during recoil.


There are two currently. I'll see about removing them.


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Yeah, we went through a LONG thread on this forum a few months ago, where a guy was shooting tiny groups at 100 yards--which opened up a LOT at 200.

Turned out he was switching benches at the two different distances, and the rear sling stud was hanging up on the bag on the 200-yard bench.


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My targets get wonky if I brace the rifle under sling studs, either front or back. When I have been in a hurry to shoot and not paying attention to how the bags have "migrated", it has caused lots of befuddlement for me in the past, and now, particularly when I shoot off someone else's setup, it is one of the things I double-check. I'd start there.

Binding of the action with the action screws tightened sounds wonky. What do you mean by "tightened"? Were they torqued to spec, and then binding, or did you tighten them too tight and then have to back them off?


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shaman Offline OP
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I had a total of 3 studs. They're gone now. Thanks for the tip. I'd never have thought of it.


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shaman Offline OP
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Thanks all for sticking your oars in on this one. I'll let you know how it goes.


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I just noticed that in your photos the bottom of the pistol grip is also sitting on the rear rest. You need to make sure that it’s not making contact either.


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shaman Offline OP
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Originally Posted by navlav8r
I just noticed that in your photos the bottom of the pistol grip is also sitting on the rear rest. You need to make sure that it’s not making contact either.


Cool. Thanks.

I'm just guessing here that a bunch of the problems I've had over the years getting a good group probably come from stupid stuff like this.


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Originally Posted by overmax
If you are shooting the rifle how it sits in the picture, I could see that as a problem. In regards to the rear bag set up I don’t see how that could be comfortable to shoot from, which could lead to poor results. If my assessment is wrong disregard.

I have found the best and quickest way to learn to do anything is to spend some time with someone who is good at what your trying to accomplish. Find a local that shoots a lot and is good at it. By whatever means, get some teaching from them. Ask to shoot one of there proven accurate rifles to get your technique down. Then ask them to shoot your rifle and see if they can tweak it if necessary. If you don’t know anyone, maybe you could pay a gunsmith to help you with the above. If they are good it would be money well spent.


This right here. Didnt care for the shooting setup as shown either. A better front rest would be nice...reducing the side to side movement. Dont know if the rifle has sling screws but if so, both would be contacting the bags as shown. I've had to learn my lessons over the years about sling screws....when they contact a front or rear bag, well, nothing can help you at that point.


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If that front rest has a grippy surface you might want to try it with a soft cloth (washcloth) in between the bag & forend.

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