Hatsan Bullmaster Velocity

[SpindleB]

Of course bragging how little issue i have with my Hatsans come back to bite me.

My .25 Bullmaster has dropped about 200 FPS, Low 700s with 25.4gr JTS.

Not the breech oring
Not the hammer spring or adjustment
Barrel is clean.
With regulator 170bar
Without regulator ~200 bar

I'm stumped

-- Matt

 

[SpindleB]

Of course bragging how little issue i have with my Hatsans come back to bite me.

My .25 Bullmaster has dropped about 200 FPS, Low 700s with 25.4gr JTS.

Not the breech oring
Not the hammer spring or adjustment
Barrel is clean.
With regulator 170bar
Without regulator ~200 bar

I'm stumped

-- Matt

The action cycles like normal so plenty of air.

 

[WorriedMan]

Think I'd verify nothing stuck in passages that's impeding air flow, like a piece of lead or debris. WM

 

[daddypaddy]

somewhere between poppet valve assembly to breech

 

[SpindleB]

Think I'd verify nothing stuck in passages that's impeding air flow, like a piece of lead or debris. WM

Clear, had it completely stripped down. Transfer port to barrel is clear.

The valve appears to work correctly, but sample of one doesn't tell me much.

Went ahead and replaced all the o'rings while it was apart.

 

[SpindleB]

somewhere between poppet valve assembly to breech

REALLY?

It seemed okay, but the sample of one thing. I've got a barrage and an invader (well my neighbor has it) so I may have a sample of 2.

 

[daddypaddy]

lol yep
maybe loading .22 as well