I can't shoot my 95 vortex QE accurately.

[Sfttailrdr46]

I think maybe because that with the round chambered and the bolt locked the only thing moving is the firing pin and the shooter. Less movement = better accuracy. With open bolt the firing pin releases as soon as the bolt closes

[xtred1]

"Open-bolt" refers to a semi- or automatic weapon that fires from an "open bolt," meaning the trigger releases the bolt, which then closes and ignites the primer, usually by a fixed firing pin. It's a rather crude but effective way of building an automatic machine gun or SMG.  Some select-fire rifles shoot open-bolt in fully automatic and closed in semi-automatic mode.

Not sure I get the analogy to break barrels, though.

Open bolt when you pull the trigger you get this bolt slamming home clambering a round at the same time and firing. Sort of like the piston in a break barrel.  You also get sort of the same delay from when the trigger is pulled to the time the projectile leaves the barrel. So shooting a good group with a quality .223 does not help one understand what is taking place when you shoot a break barrel air rifle.  Just trying to help.

[anti-squirrel]

Jim, as far as the Optimus goes, you can adjust the inner lens lock-ring to change the focal point.  I've had good luck with both mine, but I appear to be the minority. 

I don't have an AR now, but I find grouping 5.56 rounds at 500 yards (the longest I've ever shot) far easier than hitting a ping-pong ball at 20 yards free-hand with my Hatsan, at least until recently.  I'll add that learning how to shoot my springers has raised my game dramatically.  If you think a 95QE is tricky, you should get a B-1 breakbarrel off Amazon.  They have a horrendous trigger (mine is down to about 12 pounds now) and violent shot cycle. 

[jim p]

The new scopes are still holding up great.  One is on a 1300kt and one is on my hatsan 95. 

I am also getting better groups now.  I can get a .5" group at 20 yards.  This may be because the gun is shooting 890 fps with 7.9 gr pellets.  This is a little low for the gun so maybe the recoil is less now than when the gun was new.

[Hoosier Daddy]

1/2" at 20 yards with a "Jumper" is pretty darn good!

I think you and the gun are getting "broken in". 

[TwiceHorn]

"Open-bolt" refers to a semi- or automatic weapon that fires from an "open bolt," meaning the trigger releases the bolt, which then closes and ignites the primer, usually by a fixed firing pin. It's a rather crude but effective way of building an automatic machine gun or SMG.  Some select-fire rifles shoot open-bolt in fully automatic and closed in semi-automatic mode.

Not sure I get the analogy to break barrels, though.

Open bolt when you pull the trigger you get this bolt slamming home clambering a round at the same time and firing. Sort of like the piston in a break barrel.  You also get sort of the same delay from when the trigger is pulled to the time the projectile leaves the barrel. So shooting a good group with a quality .223 does not help one understand what is taking place when you shoot a break barrel air rifle.  Just trying to help.

Ah, yes, the lock time.  Makes sense.