Are Remington 700 J-Lock Rifles Less Accurate?

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You can order a Calhoun bolt shroud and speed lock spring/firing pin from Midway to replace it, which is what I did for my 300 SAUM Sendero. My new CDL 300 ultra does not have the J-lock and I'm pleased with the factory trigger as it came in the box.



I think you are thinking of Callahan? They did not used to make replacemant units for Model 7's, but may now, not sure......
 
Hey guys, I took the rifle home this evening, it sure is pretty...ill get some pics up soon.

Is replacing the spring and firing pin assembly to eliminate the J-Lock something I can do myself, or do i need a smith?
 
If you had the proper tools you could do it youre self. If you don't then it wouldbe cheaper to have a smith do it or you could buy the fireing pin with a shroud already included..
 
"I think you are thinking of Callahan? They did not used to make replacemant units for Model 7's, but may now, not sure......" - 2muchgun

You might be right, It's been about 3 years since I did the replacement and it was on a 700 Sendero.
 
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Though....she's really not a remmy anymore.

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Looks nice, I just ordered a McMillan Mountain Rifle handle in 70%LightBlue/30%White swirl.

Is that a light blue to medium blue flame?
 
brdeano,

Yea it was one my smithy had in stock at the time of wanting a build. It is light/and I think regular blue. The coolest one I have seen was one he got in that started yellow and flamed into orange and red at the end of the butt stock, I wanted it bad but it was sold.
 

PSDan,

You can remove and replace the firing pin assembly very easily using a penny coin.

PM me and I can walk you through the process if you wish.

Your first try requires less than 10 seconds.
 
Forgot to add:

It is wise to replace the JLcok shroud and spring. As mentioned, can purchase a Callahan shroud/spring/pin for $37 retail, Tubb assembly $55 or so. TA17's photo appears to be much less spring than I'm used to seeing. Most are longer and consequently more bungled up around the pin.

One thing I'll add apart from the JLock being junk is the JLock shroud is approx 25% longer than standard and will contact your cheek when working the bolt.
 
I posted these pic's on another site so i'll use them here as well for those who would like to see or know how to take the fireing pin assembly out of the bolt.

I have a tool for removeing the fireing pin assembly but you can do it with a allen wrench also.
Place the allen wrench cross-ways over fireing pin sear and pull back With one finger on each side of shroud, kinda like shooting a bow, and turn shroud out of bolt. Once you have it out it would'nt hurt to clean the inside of the bolt with a small bore mop and also clean the fireing pin [beeep]. if you are going to use it again. Once cleaned give it a few lite drops of oil.. When you use the gun in the winter where you have low temps you may want to wipe the fireing pin dry till you are done hunting for the season, then give it some oil for storage..


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When putting the bolt and fireing pin [beeep]. back together just reverse the prosses..
Also while you have it apart you could check to see if the fireing pin is traveling straight and not rubbing inside the bolt somewhere around the fireing pin area. To check for this use some machinest blue or a black magic marker and color the fireing pin and put back to gether. Then dry fire a few times and take bolt and fireing pin apart and see if there are any bright spots on the fireing pin..
If so you can remove the hi spot with some emmery cloth and then re-color and put back together and dry fire again and then take apart and check to see if enough was removed..

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Thanks for the tips guys...

Since I picked up the rifle I have done some trigger workand floated the barrel. I have not shot it yet but I cant wait to. here are some pics as promised...



 
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you keeping that scope on there after all dan?


Guess i kinda have to now, already have it mounted in the rings /ubbthreads/images/graemlins/laugh.gif
 
Well I shot a few rounds through the rifle today and I was a little disappointed. I was shooting Federal loaded 70 grain Nosler ballistic tips. I thought they would shoot decent but they wouldnt even hold a 2" group. I think maybe they are too light for the 9 1/8" twist rate??? I ordered a box of Hornady 95 grain SST from midway so I will see how they shoot. I have never had much luck with Federal ammo out of my Remington's anyway, dont know why though.
 
There are all sorts of trial & error remedies to look forward to.

What I do w/ Remington stock barreled action- in order of where I'd start:

1) Muzzle: Recrown. Why? Because knowing you have a perfect crown beats the alternative. Most rifles have bad crowns where cut may appear clean but is not perpendicular to bore.

2) Bullet: In terms of testing general accuracy, shoot a bullet with a bearing surface that matches best with the twist rate. Try 87 Vmax or any Sierra from 85 to 100 gr.

3) All the essentials including trigger (replace or fine tune), add pillars & bed action from rear tang to lug, replace firing pin mechanism.
 
I talked to Bob Hart of Hart rifle barrels about the J lock. He said that he had built many, many Match winning 1000 yard rifles with the J lock.

He did say that if you have one that is a problem, it will be noticable by the grinding sound that you hear on the sides of the bolt body as you "cock" the firing pin when you open the bolt on a fired round, in which case, they will need replacing.
 
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can't wait to shoot this dan...glad you got it for me to shoot haha



It's a blast, you will enjoy it for sure. Got some different ammo to try and also going to try and put the B&C stock on it to see how well it shoots with that.
 
Well got some 95 grain Winchester Silvertips and some 95 grain Hornady. Tried shooting it with both the wood stock and the B&C stock, didnt seem to make much difference. It seemed to like the silvertips pretty well, shot a little under a 1" 3 shot group. I still might mess around with it a bit and remove the J-lock and see if that makes any effect on the accuracy of it. I guess I just wont be 100% happy with it until it shoots 1/2 MOA...my remmy 700 .223 varmint spoiled me because it will shoot .36" groups with a B&C stock...it's a freak.
 
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