Low fps on a refurb

I posted this on the new old yellow too so sorry to dual members reading twice. My new (refurb) CFR is shooting a good deal lower then what I’ve heard others mention. With7.9grs shooting high of 777fps for 10.59fpe low of 728fps for 9.3fpe and average. Of 9.74fpe. I shot 2 10.5 gr cps at 671 and 665fps for 10.5 and 10.31fpe.

It feels like the spring is rusted when I cock it and it don’t sound too healthy. I’ve only shot it like 15 times today. Tomorrow it’ll get my entire day to mess with perhaps it’ll gain 100fps lol. Doubt it but I’ll do what I can.
 
It's a refurbished. Put a few tiny drops of silicone chamber oil in the port. Half cock it a few times. Set it in the corner over night barrel up. Then shoot it tomorrow. Refurbished means nothing. Who knows how long its been sitting around. It will desial the first few shots. This might loosen it up a bit. your rifle is rated at 1100 fps I think 750 average is what I would expect depending on the pellet. They test there rifles with alloy pellets and exaggerated fps is the result. 

Like Yo asked. How does it shoot?

Hope nothing is broken dude. Or it's time to give it a tune and some love.
 
I haven’t shot for accuracy yet. Just in my small yard through a chrony into a trap. Tomorrow all day I’ll be testing accuracy. I’ll drop some of my Crosman silicone chamber oil down for the night.

I was really hoping for a just under 12FPE gun. Not a 10fpe. I’ll be shooting exacts 8.4. HN FTT 8.64. CP point(I have had a co2 gun literally shoot pointed anything the best) CP heavies CP 7.9s. Exact heavy 10.34. Exact RS 7.3. Stratton 8.26. And if I have time some more. 

Im really hoping to avoid tinkering too much with the chamber and spring as I have a hard time putting these plastic guns back together without a good deal of plastic getting scrapped and dinged up. 
 
I haven’t shot for accuracy yet. Just in my small yard through a chrony into a trap. Tomorrow all day I’ll be testing accuracy. I’ll drop some of my Crosman silicone chamber oil down for the night.

I was really hoping for a just under 12FPE gun. Not a 10fpe. I’ll be shooting exacts 8.4. HN FTT 8.64. CP point(I have had a co2 gun literally shoot pointed anything the best) CP heavies CP 7.9s. Exact heavy 10.34. Exact RS 7.3. Stratton 8.26. And if I have time some more. 

Im really hoping to avoid tinkering too much with the chamber and spring as I have a hard time putting these plastic guns back together without a good deal of plastic getting scrapped and dinged up.

Let me know if it helps. Good luck. Shoot a a few of your exact 10.34 heavies first it will expel the extra oil out quickly. The rifle I going to diesel for awhile. 
 
I haven’t shot for accuracy yet. Just in my small yard through a chrony into a trap. Tomorrow all day I’ll be testing accuracy. I’ll drop some of my Crosman silicone chamber oil down for the night.

I was really hoping for a just under 12FPE gun. Not a 10fpe. I’ll be shooting exacts 8.4. HN FTT 8.64. CP point(I have had a co2 gun literally shoot pointed anything the best) CP heavies CP 7.9s. Exact heavy 10.34. Exact RS 7.3. Stratton 8.26. And if I have time some more. 

Im really hoping to avoid tinkering too much with the chamber and spring as I have a hard time putting these plastic guns back together without a good deal of plastic getting scrapped and dinged up.

Did it smooth out your shot cycle?
 
everything worked smoother from the rotating breech to the cocking force but it was still grinding sounding at the end. I could noticeably tell a different in overall feel. I did pull two sharp pieces of chewed up metal out of the breech which was somewhat alarming.

It is indeed 155fps average slower then my old accu. I was around 721fps with HN ftt where as my old accu was 880fps with far less weight, twang, and force. 

Its very pellet fussy. Most pellets seemed about 3/4 inch at 10 yards roughly. Shot jsb exacts at a tad under 3 inches at 18 yards. It shot the FTTs second best printing a few 5 shot groups around half inch shooting from a sturdy seated position. As every gun I’ve owned jsb rs shot really well but I don’t have too many more of them at the moment

I think I’m going to take it apart tonight or soon and clean the internals and use some airventuri moly on the spring. 
 
 



it’ll be getting the GRT install tonight assuming I have the right model. It was for the accu. 

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With Hatsans you get the Power, but you also get some rough machining. I had the 155 Torpedo under-lever. Beautiful stock, very very fast velocity. Broke within an hour.

Have only had one that was bad but they replaced it. All but three of mine have been debured and tuned the triggers adjusted to my liking. The wood stock ones I have soft bedded. The other three I will also tune adjust etc...

Two bad you got a clunker but even the most expensive rifles have clunkers.
 
Just straighten it as good as you can. Then stretch it slightly so it's about 1/2 inch longer before you install it. Don't forget to moly. Also clean out the spring chamber as best you can.

Shooting it
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won't hurt your rifle. The most it will do is spring fall. Then you can replace it. But it might fix. I just recently rebuilt a Winchester 425 stretched the spring slightly to increase the fps in this low power rifle got about 50fps more.

Or you can just buy the new sping and wait to shoot it