Will Remountlng PSS in Stock Change Accuracy?

[samnev]

Yesterday I had to remove and remount my 223 PSS in it's stock. The bolt release tab had become stuck and no amount of prying would move the release tab. That fixed remounted the rifle in the stock and retighted the screws to there starting position which had been peviously marked. A torque wrech was not available even if I knew what the proper torque was. The rifle then shot 6" high and 6" to the right that had previouly been zeroed. What was a 0,5" group rifle was now a 1.5" rifle with the same loads tha thad been shooting 0.5" goups for years. Any ideas why this happened?
TIA

 

[HOGGHEAD]

Re: Will Remountlng PSS in Stock Change Accuracy?

Normally it just changes POI, but it can effect accuracy if not done properly. Is it possible you got a piece of dirt or something else in the action before you put it back together??

Take it back apart again, and inspect the parts. Then reassemble. I know investing in a torque wrench was one of the best tools I ever bought. Tom.

 

[McKinneyMike]

Re: Will Remountlng PSS in Stock Change Accuracy?

Tighten the action screws snug and then gently tap the butt of the stock on the ground. Then torque to specified standards. See if it does not return to previous form.

 

[Quickoz]

Re: Will Remountlng PSS in Stock Change Accuracy?

I must have taken my 700 .308 out of its PSS stock about 10 times, aslong as you retorque to the same values you wont have any issues. Go buy and torque wrench. Will be money very well spent. I have the Wheeler FAT Wrench and that works well. You may have a lil POI shift but thats normal. But Ive taken mine out and the zero has remained constant.

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

I will get torque wrench but can someone tell me what the torque values are for the front and rear screws.
TIA

 

[jbell]

Re: Will Remountlng PSS in Stock Change Accuracy?

The torque is 65 inch pounds and tighten the front action screw first. I snug them by hand first , front one then the rear one and then apply the final torque front then rear.

 

[desertHK]

Re: Will Remountlng PSS in Stock Change Accuracy?

Had a similar problem with my 243 win. Drop into a different stock and TSHTF. It turns out the the action was not sitting evenly on the stock. So, you may want to double check to make sure that the action sits evenly on the stock and the screws are properly torqued.

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

jbell,
Thanks for the info on the torque value and thanks as well to everyone else.

 

[chrisj]

Re: Will Remountlng PSS in Stock Change Accuracy?

I'm not sure what distance you were shooting at but I have taken bbld actions out of stock more times than I can ever count and have Never had one shoot 6" off @ only 100 yards. I would remove the action, make sure the bedding area is clean with NO burrs on the aluminum, make sure the action is clean and put it back together. Make sure the bbl isn't touching the stock also.

 

[Netz]

Re: Will Remountlng PSS in Stock Change Accuracy?

If you think this disassembly might be a one time thing, and can't justify buying a torque wrench, check with your local auto parts store like Kagen or Auto Zone, they loan out tools for free.
Curt

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

I've taken my M1A match grade out of the stock once or twiwce over the last 25 years and never had the POI change more than an 1" or so at 100 yards. So the big shift in the vertical & horizontal POI really supprised me. I guess i'll have to reassemble it when I get the torque wrench.

 

[Shady_Jay]

Re: Will Remountlng PSS in Stock Change Accuracy?

A PSS in a PSS or 700P stock has a torque value of 40 inch lbs. This is due to the pot metal the bottom metal is made of. Almost all other stocks are 65 in/lbs.

 

[diggler1833]

Re: Will Remountlng PSS in Stock Change Accuracy?

Even after swapping H-S stocks and skim bedding the second stock my POI only changed 1/4" at 100yds. Might want to hit the reset button and pull it apart and try again. Just my .02.

 

[Quickoz]

Re: Will Remountlng PSS in Stock Change Accuracy?

I run 60in/lbs in the front and 65in/lbs in the rear. I havent heard of the 40in/lbs spec of the Police stock.

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

Call me crazy but the action mounting blocks in my PSS donot look like pot metal but a rather substatial aluminum block. Of course I could be incorrect.

 

[Niles Coyote]

Re: Will Remountlng PSS in Stock Change Accuracy?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Quickoz</div><div class="ubbcode-body">I run 60in/lbs in the front and 65in/lbs in the rear. I havent heard of the 40in/lbs spec of the Police stock. </div></div> <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Santo</div><div class="ubbcode-body">Call me crazy but the action mounting blocks in my PSS donot look like pot metal but a rather substatial aluminum block. Of course I could be incorrect.</div></div> <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kick-Ass</div><div class="ubbcode-body">A PSS in a PSS or 700P stock has a torque value of 40 inch lbs. This is due to the pot metal the<span style="font-weight: bold"><span style="text-decoration: underline"> bottom metal</span></span> is made of. Almost all other stocks are 65 in/lbs. </div></div>

He is refering to the <span style="text-decoration: underline">factory bottom metal</span> not the alum bedding block... I found this out first hand when the screw started galling the bottom metal

 

[FreshKills]

Re: Will Remountlng PSS in Stock Change Accuracy?

Bed it and don't fret it. Until then you are pissing up multiple ropes.

 

[Shady_Jay]

Re: Will Remountlng PSS in Stock Change Accuracy?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Niles Coyote</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Quickoz</div><div class="ubbcode-body">I run 60in/lbs in the front and 65in/lbs in the rear. I havent heard of the 40in/lbs spec of the Police stock. </div></div> <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Santo</div><div class="ubbcode-body">Call me crazy but the action mounting blocks in my PSS donot look like pot metal but a rather substatial aluminum block. Of course I could be incorrect.</div></div> <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kick-Ass</div><div class="ubbcode-body">A PSS in a PSS or 700P stock has a torque value of 40 inch lbs. This is due to the pot metal the<span style="font-weight: bold"><span style="text-decoration: underline"> bottom metal</span></span> is made of. Almost all other stocks are 65 in/lbs. </div></div>

He is refering to the <span style="text-decoration: underline">factory bottom metal</span> not the alum bedding block... I found this out first hand when the screw started galling the bottom metal </div></div>

Correct.


And I was actually off 5 in/lbs since I was doing it from memory. 45 in/lbs - sorry


http://remington.custhelp.com/app/answers/detail/a_id/406/kw/torque/r_id/166

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

Since there was some disagreement on torque values I followed link provided by Captain Kick Ass to Remington site. There reccomendation was 45 inch pounds on Police guns. So I borrowed buddies torqe wrench with allen adatpter and decided to start at 45 inch pounds and work up from there. Long story short at 45 inch pounds my PSS is again shooting 0.5" 5 shot groups @ 100 yards. Rifle was assembled properly, there was no foreign matter present. So the torque reset was all that was needed.
Again thanks to all.

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?


Captain Kick Ass,
Thanks for the link to the Remington site. It cured the problem

Santo

 

[oneshot onekill]

Re: Will Remountlng PSS in Stock Change Accuracy?

Every time I read something about how the torque on the action screws affects accuracy I scratch my head. Not because I doubt the validity of it... Simply because I must get really lucky with my rifles. I've never paid any attention to how tight those screws are. I just crank them down until they feel about right or so they're not sticking out and rubbing the bolt on either end. I've never had it change anything about a rifle's accuracy.

 

[samnev]

Re: Will Remountlng PSS in Stock Change Accuracy?

I've never had it happen before either. Taken a number of rifle out of the stock, reinstalled and had litlle or no shift in shot placement or accuracy. The PSS was the first time I had this problem. Not only did the groups open up but the point of impact shifted dramtically. When I took it apart to retorque it I made careful note to see if anything was assembled incorrectly, it wasn't. So I can only conclude it was the torque I had initially applied as I had always done before.