CVA Optima V2, Problems. - The HuntingPA.com Outdoor Community
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post #1 of 20 (permalink) Unread 04-17-2019, 08:09 PM Thread Starter
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CVA Optima V2, Problems.

I took my CVA to the range today to get it fine tuned at 100 yards. After turning my shoulder to what felt like mush I gave up,, but here's the thing. Last time I was at the range it was shooting 1 to 1.5 inch groups today it was all over the place. Same powder sabot and bullet combo. So I switched to a lighter bullet and it seemed to shoot some better but I could not get near the bulls eye. I tried to shoot and clean after every shot, tried to shoot 2 to 3 shots and clean, tried different powder charges (80 to 110 grs. Triple 7 - 2 and 3 f ). Finally gave up with a sore shoulder. Got home and took everything apart to clean it real good and noticed that the front screw on the fore arm stock was loose other than that everything was tight. Would that fore arm screw cause them shots to go all over? Is there some special torque setting for that screw?
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post #2 of 20 (permalink) Unread 04-17-2019, 08:20 PM
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the barrel was probably wiggling all over the place with that lose screw. use some loc tite and go back to the range. you can also use a limbsaver strap on shoulder pad to help reduce recoil. i can shoot a whole box of rifle slugs out of a pump gun with that thing and never have a bruise.


it goes on your shoulder, not the gun.
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post #3 of 20 (permalink) Unread 04-17-2019, 08:42 PM Thread Starter
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Originally Posted by bohunr View Post
the barrel was probably wiggling all over the place with that lose screw. use some loc tite and go back to the range. you can also use a limbsaver strap on shoulder pad to help reduce recoil. i can shoot a whole box of rifle slugs out of a pump gun with that thing and never have a bruise.


it goes on your shoulder, not the gun.
Thanks. Is there a torque setting for the screw? I've been looking around and can't find one.
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post #4 of 20 (permalink) Unread 04-17-2019, 08:55 PM
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It's soft steel and it's drawing against polymer, don't overtighten it... finger tight is plenty. If the screw is etching or deforming the forearm, it's too tight.

But that's unlikely to be the problem.
I'm assuming you have a scope on it..
Most likely culprit (especially if said scope was factory mounted) is the base(s) aren't tight.
Next, I'd suspect the rings..

If everything is tight, I'd question the age of your powder. Triple7 is way more hygroscopic than black powder, and I've seen plenty of groups widen (and fizzles) from aged pyrodex and 777.

It's also possible something worked loose in the scope (especially if it's the Konus usually included in their package deals... usually they're good to go, but they do have a higher failure rate than most of the major brands)
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post #5 of 20 (permalink) Unread 04-17-2019, 09:07 PM
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I would suggest trying some fresh 777 for a starter.

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post #6 of 20 (permalink) Unread 04-18-2019, 06:24 AM
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A dirty breech plug did the same thing to mine.

Good luck, Stant
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post #7 of 20 (permalink) Unread 04-18-2019, 07:41 AM Thread Starter
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Thanks fellas, the Triple 7/2F is about 1 year old and that shot the worst, the 3 f / T7 is probably about 3 maybe 4 years old and that shot best, it's like wth. everything was tight, scope rings and base evenly torqued to 20 inch lbs.. The scope is a Nikon 2x7 but that doesn't mean it couldn't be the scope. The breech plug was pretty fouled when I took it apart to do a good cleaning. One thing I noticed too was after I shot the first round out of a completely clean barrel the second and third round would not seat the same no matter how much pressure I put on on the ram rod. So that could be a problem too and I bought a special breech plug just for loose powder. So this is where I'm at, try a different scope, put the breech plug for black powder pellets back in and try some pellets or just try some loose 2 f Goex BP. Also I torqued that forearm screw to 20 inch lbs. which seem to be okay. What do ya think?
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post #8 of 20 (permalink) Unread 04-18-2019, 03:09 PM Thread Starter
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Update,, I got some Triple 7 50/50 pellets and put a good Bushnell 3x9x40 scope I had on the CVA and bore sighted, double checked all screws everything was good to go. Went to the 50 yard range and first two shots high and right at 2 o clock and about 1 inch apart cleaned the bore and next shot went low at 7 o clock so okay maybe I pulled that one. Shot another and it went high 10 o clock. Cleaned the rifle and took it to my local gun dealer that I bought it from told him what was going on, he offered to send it back but I traded for a T/C Impact SB even up. Done with the CVA.
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post #9 of 20 (permalink) Unread 04-18-2019, 10:58 PM
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Quote:
Originally Posted by Waynzee View Post
Thanks fellas, the Triple 7/2F is about 1 year old and that shot the worst, the 3 f / T7 is probably about 3 maybe 4 years old and that shot best, it's like wth. everything was tight, scope rings and base evenly torqued to 20 inch lbs.. The scope is a Nikon 2x7 but that doesn't mean it couldn't be the scope. The breech plug was pretty fouled when I took it apart to do a good cleaning. One thing I noticed too was after I shot the first round out of a completely clean barrel the second and third round would not seat the same no matter how much pressure I put on on the ram rod. So that could be a problem too and I bought a special breech plug just for loose powder. So this is where I'm at, try a different scope, put the breech plug for black powder pellets back in and try some pellets or just try some loose 2 f Goex BP. Also I torqued that forearm screw to 20 inch lbs. which seem to be okay. What do ya think?
Underlined above:
Sounds like you were experiencing the infamous 777 "Crud Ring"...
I've found this is usually caused or made worse by certain primers... curious what you were using.. (I've found the Remington "Kleenbore" and CCI Magnum primers minimize the ring)
Inconsistent seating could definitely cause issues grouping...

I see it's moot now with the CVA, but if you start to experience similar issues with the T/C, try different primers.
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post #10 of 20 (permalink) Unread 04-19-2019, 08:58 AM Thread Starter
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Quote:
Originally Posted by Wingatchtochwilsit View Post
Underlined above:
Sounds like you were experiencing the infamous 777 "Crud Ring"...
I've found this is usually caused or made worse by certain primers... curious what you were using.. (I've found the Remington "Kleenbore" and CCI Magnum primers minimize the ring)
Inconsistent seating could definitely cause issues grouping...

I see it's moot now with the CVA, but if you start to experience similar issues with the T/C, try different primers.
I was using Federal 209A mag. primers. Yep, I'll have to watch for that crud ring in the T/C.
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