knight rolling block, KRB7

[ejpaul1]

I bought this rifle about 2 years ago when midway advertised them for 149 dollars. I got it home, fired it and absolutely loved it. Until, it misfired. Regularly. Sent it in, got it back repaired and life has seemed to be OK. I probably put 40 rounds through it after I got it back and had no issues until the other day. One lonely misfire. For those of you that have one or have had one of these, my question is, is the problem:

Too short of a firing pin?
is the nipple on the hammer too short?
or is it the tolerance between the primer holder and the firing pin housing to loose?

I am thinking of taking the action into a machinist and seeing if they will build up the hammer nipple or machine the flat recessed area below the hammer nipple out a few thousands. I know a few machinists to sat the least.
I love the design of this rifle, the fit and the accuracy. I love everything about it but this silly misfiring issue.

[ShawnT]

ejpaul1,

They had a few of these leave the factory that have this problem. IF you have the hammer spur (Extension) screwed into the hammer when you fire, try removing it to fire a few rounds. In some cases the extra weight of the spur causes the hammer saftey to tip up slightly as the hammer is falling under fire. You can also try dry firing with and without the spur and see it too. If the saftey is tipping up a little it will cause the top edge of the saftey, just above the protusion that strikes the firing pin, to catch on the top of the opening in the block. That will prevent it from striking the firing pin. They replaced the hammer in my trigger group for this, but I think it might just be a slightly weak spring for the saftey that causes this. I would not take it to the machinist. Just call Knight and try to get to Gordy or Sam and they will fix you right up.

ShawnT

[ejpaul1]

thanks, I'll try the removing of the hammer spur. Other than that, I love everything about this rifle! I have seen some guys load them to the max and accuratly shoot to 250 yards (with a scope). The rifle seems to be far more capable than I am. Wish we could use scopes here in colorado. EJ