CZ won't shoot

[ricebasher302]

I have a CZ 527 Varmint. It's in an HS block bedded stock. It has a Pro Staff 3-9x40 in Millett rings. When I first bought it, about 4 months ago, I sighted in, shooting between 5/8" and 1" groups with varoius 50-55 gr. ammo. I've wailed on some prairie dogs and have shot about 125 round through it in the time since I've had it. I recently started missing shots and put it back on the bench. Now, it will not group at all, (2-3 inches with some fliers) with any of the same ammo I had used to sight in. I checked the action screws and tightened them, checked the rings, made sure there was no pressure on the barrel, and nothing has changed. Does this mean my scope is going away? It's never been banged around, and I'm just very frustrated. It was a brand new scope and rifle for that matter.

Any ideas?

 

[R.W.Dale]

it sounds like one of two things

1 a scope going south, it happens to all scopes from time to time

2 a badly fouled bbl, when was the last time you ave the rifle a good cleaning with a copper solvent

 

[ricebasher302]

I guess I could give it a good heavy cleaning, but I ran a patch down the pipe at the range, and it didn't seem to make any difference. I do take pretty good care of my guns, and I've never shot it with a hot barrel, hardly even warm, and usually clean after 25-40 rounds.

 

[rcmodel]

Running a patch down the barrel at the range does nothing to remove copper fouling.

Get some copper solvent and follow the directions.

When you stop getting blue patches, then, and only then is it clean.

rc

 

[Big_E]

I always run patches through until they stop turning dark. Even after shooting 10 rounds. After I did this with my 700 where I was getting 3'' groups I now get 1'' w/ cheap factory ammo. 2 shots are touching and 1 is slightly off @ 100 yrds.

If a spotless cleaning doesn't help then get the scope looked at.

BTW, 1) Copper brush down bore two or three times. 2) A few patches of Hoppe's 9 then a few patches of Rem. 40-X. 3) Dry patch. 4) Rem Oil or CLP That should do it.

 

[R.W.Dale]

I guess I could give it a good heavy cleaning, but I ran a patch down the pipe at the range, and it didn't seem to make any difference. I do take pretty good care of my guns, and I've never shot it with a hot barrel, hardly even warm, and usually clean after 25-40 rounds.

But are you cleaning with a solvent that'll attack copper fouling? You can punch the bore all day long with a powder residue solvent and still not touch the copper fouling that actually effects accuracy.

Unload the rifle and look closely at the rifling near the muzzle, is there any copper coulered streaking

 

[ricebasher302]

I'm going to go home and do this. I guess there probably could be some copper fouling going on. I hope so. I'd rather suffer from mild retardation than have to deal with faulty equipment.

 

[viking499]

Never new all those words in the title could go together................

 

[ricebasher302]

You're right, they shouldn't! I didn't mean to cause any alarm.

 

[rcmodel]

Hoppes #9 & Rem-Oil will not remove copper fouling.

You have to use copper solvent to find out if there is really anything worth removing in there. Blue patches indicate copper fouling.

rc

 

[rangerruck]

number one; copper fouling is everything, get a light and a borescope if you have to.
number two; if it has any sights on it at all, remove the scope and shoot at 25 or 50 yards. If you can shoot 2 inch groups or less, at 50 with open sites, you know it is not the rifle.
Could also be the scope rings- put a wood stick or dowel, in the rings, with the scope removed, and twist the stick, hard. look all around the front/sides, etc., especially of the bottom mount of the bottom ring, you may find a hairline crack.
i did once, and i would have never seen it, without twisting a piece of broomstick in it , first.

 

[stubbicatt]

Did you verify the action screws are tight? That the barrel is not touching the barrel channel in the stock?