The AirGun Guild

General Category => Big Bore Airguns => Topic started by: Guthook on January 13, 2018, 05:02:45 PM

Title: Quackenbush .575 short rifle
Post by: Guthook on January 13, 2018, 05:02:45 PM
Does anybody have any numbers on this gun. I'm on his list and looking forward to receiving it. Thanks
Title: Re: Quackenbush .575 short rifle
Post by: steveoh on January 15, 2018, 09:41:00 AM
Does anybody have any numbers on this gun. I'm on his list and looking forward to receiving it. Thanks

I have the same DAQ, but I've yet to chrony it.  I have one day under my belt at the range, and I'm going to say that it is a beast. Kicks like a mule, and roars. Sounds like a powder burner.  I shot it with my 909s and I know for sure the DAQ makes the 909s pale in power. When I get to shoot it again I'll chrony it and report back.

Oh, it sucks the air out of a big tank mighty fast.  2 shots, refill. Of course it really isn't broken in, so I suspect that after breaking in, you might be able to get three useable shots. Maybe. My first dozen or two shots I'd get two shots, and the DAQ was empty.  :o

Steveoh
Title: Re: Quackenbush .575 short rifle
Post by: Guthook on January 15, 2018, 04:07:36 PM
Thanks Steve, by empty do you mean it dumps the reservoir on the second shot?? Looking forward to seeing your numbers😂
Title: Re: Quackenbush .575 short rifle
Post by: steveoh on January 15, 2018, 05:04:22 PM
Thanks Steve, by empty do you mean it dumps the reservoir on the second shot?? Looking forward to seeing your numbers😂

Yep, dumps the reservoir on second shot. BOOOOOOOM!

Funny with my earmuffs on it still sounds like BOOOOOOOM!, but the 909s, and the DAQ .58 Pistol have a hollow whoop sound. Serious business this .58 Short Rifle is.

I cast a bunch of .575 round balls when I first got the rifle, and also have a .575 minie mold I need to try out. I just need to get away and go shoot the thing.
Title: Re: Quackenbush .575 short rifle
Post by: Guthook on January 16, 2018, 06:10:04 AM
What psi are you filling to?  I fill my DAQ .457LA  to 3250psi.  Some fill to 3500 but I don't.
Title: Re: Quackenbush .575 short rifle
Post by: steveoh on January 16, 2018, 09:00:52 AM
What psi are you filling to?  I fill my DAQ .457LA  to 3250psi.  Some fill to 3500 but I don't.

I believe I filled to 3k as specified by Dennis. The last time I was at the range, I ran out of air in the big tank and a smaller tank. So I was trying to conserve air. (if that's possible with a DAQ).
Title: Re: Quackenbush .575 short rifle
Post by: Guthook on January 19, 2018, 10:52:02 AM
Yeah I understand saving air for a few more fills. Big bore airguns don't get a lot fuel mileage. I'm anticipating a 3250psi fill based on your comments. Hopefully that will give 2 shots without dumping before the fill .   Filling from empty takes more air than adding 250psi to the max fill.
Title: Re: Quackenbush .575 short rifle
Post by: steveoh on April 08, 2018, 10:26:39 AM
Yeah I understand saving air for a few more fills. Big bore airguns don't get a lot fuel mileage. I'm anticipating a 3250psi fill based on your comments. Hopefully that will give 2 shots without dumping before the fill .   Filling from empty takes more air than adding 250psi to the max fill.

I've since talked to Dennis, and he said to try filling to 3100 psi, and maybe 3200 psi if that doesn't make the rifle happy by not dumping all the air on the second shot. He said, my gauge is probably off a good 10%, which is why the rifle dumps.
Title: Re: Quackenbush .575 short rifle
Post by: steveoh on May 10, 2018, 12:57:11 PM
I have read on multiple websites, and have heard from multiple Quackenbush owners who are filling well beyond the recommended 3000psi. Dennis okayed 3100 and 3200psi because he said that gauges can easily be off 10%, and might account for the rifle dumping after second shot. He says he set my rifle up for 2 shots with air left in the tube. Not 2 shots where it dumps on the 2nd.

One fellow who has owned many DAQs suggested you need to find the sweet spot of what pressure the gun likes. Start at 2,800 or so psi, load up a round ball or whatever your desire, and shoot it over the chrony. Record each shot, and refill the rifle after each shot, slowly increasing psi per shot. Something like this 2800, 2900, 3000, 3100, 3200, 3300, 3400, 3500. Find the peak FPS and he said you're likely to get a bit of a bell curve. He also said he had one DAQ that was happiest at 3700 psi. Same fellow also keeps his tank connected to the rifle when testing, but closes the valve after filling to desired pressure, but does not bleed. Tells you how much air was consumed per shot.

I saw a guy on GTA get his ass reamed because he was shooting his DAQ .308 at 3,500 psi.

All of this makes me mighty itchy. I don't like airguns exploding on me. No sir.

I bet some of ya'll have some pretty good opinions.  ;D