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Old 01-06-2019, 05:27 PM
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Bad grouping



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I ran several rounds down range today with my 597 and savage mark 2. On both guns it seems like the groups are all over the place until I start backing off the screws that hold the stock and action together. It also seems like they both preferred a faster round. I've tried about everything CCI has to offer and the ones that did the best were in the 1200 fps range. I haven't done anything extreme to either gun other than making sure that the barrel is floated and weaker spring on the trigger. Any suggestions or explanations would be appreciated.

Thanks,
Jeff
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Old 01-06-2019, 06:42 PM
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Odd, 597's are usually quite accurate.



Try the action screws at finger tight plus 1/2 a turn aka snug not tight. Also CCI Standard velocity is my go to ammo to get an accuracy base line.



Good luck and wait to Al (member here) weighs in, he's the 597 whisperer.
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Old 01-06-2019, 07:15 PM
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It looks like the gun has potential, after messing with the screws a bit I can usually get around a half inch at 50 yards but I don't know how repeatable it will be. I will try your suggestion with the screws. Thanks,
Jeff
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Old 01-06-2019, 08:49 PM
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Originally Posted by FlysAlot View Post
Odd, 597's are usually quite accurate.



Try the action screws at finger tight plus 1/2 a turn aka snug not tight. Also CCI Standard velocity is my go to ammo to get an accuracy base line.



Good luck and wait to Al (member here) weighs in, he's the 597 whisperer.
Nah, you're the 597 MAN Flys. I'm just a peon.

If you're shooting a a few 1/2" groups with hv you're on the right track JR. Check the float, or not, of the barrel. The majority of 597s seem to shoot better fully floated of a business card thick. There's a 'lot' of tips for tweaking in the bottom sticky IMA.
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Old 01-06-2019, 09:06 PM
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Free float the barrel like Al said. I find that 25 in/lbs is a good torque for the action screws. It’s a little more than finger plus a half turn.

I spent some time following the tips posted at the top of the 597 forum. Flipping the trigger spring, I just finished polishing today, freefloating the stock, reaming out the action screw holes in the stock so the action screws don’t bind, etc. I’m far happier with it now.
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Old 01-07-2019, 06:35 AM
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Nah, you're the 597 MAN Flys. I'm just a peon.

That is HARDLY the case I just seem to acquire more than my share! My fav's are my first year wood stocked 22lr that I bought at Sapp's Pawn and Gun (now closed) it had been on the shelf for 10 years! My second fav is the AAC Threaded.









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Old 01-07-2019, 03:49 PM
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I noticed the front screw wouldn't come out of the stock without being screwed all the way out so I opened up the hole a little. I've already flipped the hammer spring, kind of funny, I haven't done anything to the trigger other than changing out the spring but it decided to go full auto on me once yesterday, well more like a 2 round burst. As far as floating the barrel, with both screws snug, I can easily slip a piece of notebook paper under it from one end of the forearm to the other and when I loosen the front screw the gap gets considerably more. I'll try guesstimating at the 25 inch pounds and give it another try.
It sounds like both of you guys are quite seasoned with this rifle.
Thanks again,
Jeff
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Old 01-08-2019, 07:29 PM
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It seems to be paying off, I was only shooting at 25 yards today off of the tailgate of my truck, with some decent winds, but my grouping was much more consistent. I gave a bit more room in floating and tightened the screws as you recommended, groups averaged around 3/8" with SV CCI's.
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Jeff
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Old 01-08-2019, 08:00 PM
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Try a washer in the stock for the front action screw to take out the 'tilting' of the receiver when the front screw is tightened down. Make sure you don't mix up which screws is which as they aren't the same length.
Your double tap is more n likely from flipping the trigger spring. Did you give it the bump test after reversing the spring?
Thin metal duct tape can be used for a 'poor man's bedding job' to tighten up the receiver in the stock.
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Old 01-09-2019, 03:09 PM
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Thanks Al, I put a thin piece of carbon fiber that goes all the way across under the rear screw where the action meets the stock. I still have a little bit of lift of the barrel when the screw is tightened down but not nearly as bad. I've seen were others have talked about using the aluminum duc tape, I'll have to see what I can learn about that.

Jeff
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Old 01-09-2019, 03:33 PM
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Originally Posted by Jrauser View Post
Thanks Al, I put a thin piece of carbon fiber that goes all the way across under the rear screw where the action meets the stock. I still have a little bit of lift of the barrel when the screw is tightened down but not nearly as bad. I've seen were others have talked about using the aluminum duc tape, I'll have to see what I can learn about that.

Jeff
You have to get the real deal metal duct tape, alas more expensive. Your plain ole duct tape will just squish down and not add the rigidity of the realm stuff. On the sides of the receiver add strips until you can't get get the metal in w/o dislodging, rolling the edge of the tape, and then remove a layer so as to get it in. The taped sides prevent flexing and rocking if the bottom of of the receiver inletting isn't perfectly flat.
I have no links but a search in the SuperStock Forum should give you what you need if the pix are still there. Vincent was the man there when he was still RFC active.
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Old 01-12-2019, 04:57 PM
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My first try at uploading a picture, not sure if it's working.
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Old 01-12-2019, 05:05 PM
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This group measured a bit under 1/4" at 25 yards, I think that I can be happy with that. I will still try the aluminum duc tape when I get a chance. I placed a lock washer under the screws holding the stock, seems to be a bit easier to achieve consistency now.
I don't think this group is too bad considering all stock parts are still being used.
Thanks again for the advice, it's greatly appreciated.

Jeff
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Old 01-13-2019, 11:00 AM
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That’s pretty good grouping. It looks like you’re starting to get things figured out!
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Old 01-13-2019, 02:23 PM
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Thanks Scott, yes, getting there.
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