SVI DVC Open 9 Major question...

[jakfrost]

Hi all, and Happy New Year to all fellow CGN'rs...! Made it out to the range over the holidays to do some chrono testing and had, for the first time ever with this gun, 2-3 'light taps' resulting in FTFire's.

The load is once fired WW brass, using a Fed small rifle primer lighting up 8.4gr of 3N38 and pushing a 125 HP Zero bullet down the barrel at a fairly rapid rate of knots...at least when the firing pin does its job.

I had a suggestion from a fellow shooter to take a couple of coils off the firing pin spring...I don't have a spare just now, so before I do that, any suggestions or comments on this line of thought? The spring appears to be stock, with a titanium firing pin.

Cheers,
Jim

 

[MOBILE 1]

Have you checked for high primers? Do that before cutting any springs.

 

[Quixotic]

Seconded checking the primers, maybe consider making the same load with the primers at different heights: high, flush, low. Hopefully you can recreate the problem and then work to mitigate it before permanently altering your rifle.

When was the last time you stripped the bolt and cleaned the firing pin and firepins channel?