Hey, guys. I took my Super out to get sighted in with a scope for the first time today. As I mentioned in the topic, it's the top mount version. I had modified the lock/release lever on the mount by bending it away from the gun, in order to make it clear a 40 mm scope objective.
It took me less that 10 rounds to get a pretty good zero at 25 yards. However, I had began to notice a problem: after a few shots, the locking lever would end up about 15 degrees up from the "locked" position. This didn't make much of a difference from a short range, but when I moved up to 100 yards, I saw a problematic pattern: I would shoot a nice, 1-1.5 inch three round group, but the next shot would be a few inches away from that group, the shot after that would be right next to that one, the subsequent shot would be a few more inches off, etc. Basically, the POI seemed to correspond to the movement of the mount locking lever, which would begin to move up after the first few shots and continue to loosen up with the subsequent ones.
This was rather frustrating and agitating. After getting back from the range, I began to do some research on this matter. I came upon this review on the Vepr Super top mount on Kalinka Optics (http://kalinkaoptics...ct/list/id/693/):
"Having used one of these hunting and target shooting mounted on my .308 for many years, I love this mount. I use a 54MM objective for light-gathering purposes, so the quick release is not used. Once I get a scope zeroed in, I lock-tite everything anyway. The quick release would work itself loose at first and touch my scope. Had to have it as tight as could be and lock it down. After that, it was years of service with no problems. This mount enables a perfectly centered scope over the Super Vepr, and I am a perfectionist. The cover must be made to accept the mount, so make sure before you buy. Between the scope, the mount, and the SV: you simply must be off target to miss."
As far as I understand, this guy's mount also comes loose, but he bypasses the quick-release lever altogether and loc-tites the screws in place. This seems like PITA to me. I like the quick release - being able to remove the scope and clean the gun, without having to worry about lining everything up and loc-titing it back together.
If the lock and release lever on these mounts generally tends to work itself loose, I think that it's a serious design flaw, which makes me question my purchase of this Vepr Super 308. Have any of you guys with the top scope mount model of the Super 308 experienced the same problem (or not)? Am I missing something here? Any thoughts or input on this would be appreciated. Thanks for reading.
I read the Russian Vepr Super manual today. It tells you to make sure that the screw on the left side of the mount is tightened all the way before you shoot. My screw was pretty loose. I went ahead an tightened it as far as it will go. I am hoping that this will fix the problem, but I am not too hopeful. I get the feeling that the lever will still work itself loose, but it will just take more shots now. I don't know... we'll see.
Edited by SpetsnazGRU, 11 May 2013 - 05:32 PM.