Lost My Mind, Beeman Chief II in 177 Is Coming !

[Darinjfry]

Was out early and tested some NSA 15gr 177 cal slugs. I turned my power 1/2 turn up from my 16.1 gr Seneca Domes.  My velocity with the slugs is 810fps and giving me 17fpe at 75 yards. My manometer is going down faster and I think I will get around 25 shots at this power setting, going from 3000 to 2000psi. I have shot 18 shots and at 2400psi on the manometer now.

I tested the accuracy and at 25 yards all shots were in a dime for sure, my 45 yard shots at inanimate objects were spot on, there is one English Sparrow that was 43 yards away that is now tweeting in heaven along with a flying rat at a lasered 35 yards that was hammered and went down like a sack of potatos. I have shot 25shots so far and I'm at 2200psi on the quage, so I'm guessing ~27 shots at this power setting.

Nope ---- at 2100psi velocity starts to drop, so +-26 shots is it at this power setting and an average velocity of 810fps, 21.8fpe at the muzzle, and 17fpe at 75 yards ----- the high BC slug REALLY makes a difference downrange ! Almost 1/4 more fpe than my 16.1 gr Dome pellets at the same range, not to mention the much flatter trajectory. The high BC of the slug gives the same energy at 75 yards as the Dome does at about 53 yards.

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I get my sizing dies in about a week from now and will size my powdercoated NSA slugs to see if that might increase velocity a bit. I have two dies, one at 4.52mm and one at 4.53mm

As it stands now ----- Seneca 16.1gr Domes and NSA slugs are the ONLY ammo I will shoot in this gun. The Domes are really accurate and hit like a ton of bricks (they do not need sizing), the NSA slugs extend that same 17fpe energy out about another 25 yards or so !! Ya got to love it :-)

Till next time,

wll

Just curious do the 16.1 seneca domes fit in the mag or do you need to use the single shot tray for these?

[wll2506]

I tested the accuracy and at 25 yards all shots were in a dime for sure, my 45 yard shots at inanimate objects were spot on, there is one English Sparrow that was 43 yards away that is now tweeting in heaven along with a flying rat at a lasered 35 yards that was hammered and went down like a sack of potatos. I have shot 25shots so far and I'm at 2200psi on the quage, so I'm guessing ~27 shots at this power setting.

Nope ---- at 2100psi velocity starts to drop, so +-26 shots is it at this power setting and an average velocity of 810fps, 21.8fpe at the muzzle, and 17fpe at 75 yards ----- the high BC slug REALLY makes a difference downrange !

As it stands now ----- Seneca 16.1gr Domes and NSA slugs are the ONLY ammo I will shoot in this gun. The Domes are really accurate and hit like a ton of bricks (they do not need sizing), the NSA slugs extend that same 17fpe energy out about another 25 yards or so !! Ya got to love it :-)

Till next time,

wll

Just curious do the 16.1 seneca domes fit in the mag or do you need to use the single shot tray for these?

I ONLY shoot using a single shot tray, so I can't tell you :-(


wll

[wll2506]

Does anyone use a hand pump for this gun , was wondering how many pumps from 2000 up to 3000 ?

wll

[wll2506]

I'm out at about 6:30 in the morning with my Chief II Plus, hammer spring is set my "0" point and shooting Monster 13.43gr pellets - they are going out at 833fps at the start. The spring and hammer are bouncing around because there's so little pressure on them. I have the guns hammer spring set very lightly, this gun as I have said before --- its an extremely powerful for what it is.

My velocity will climb to the 860 area as it has done in the past and then at the end of the bell curve be in the 830 fps area again. (I pretty know the curve for this gun with Monsters, a full tank and my "0" home setting).

The PITA wind is blowing pretty good on this 52° morning, and my shots are to the right about 3 inches. At this starting velocity I get ~ 16fpe at 35 yards and 15fpe at 45 ---- I think that is enough for Starlings and Feral Pigeons :-)

Shooting Monsters in this gun is a very good general choice when slugs or the heavy Seneca Domes are not needed.  I can tell at my 35 yard zone the Seneca hits harder and has more energy but at the cost of shot count, as that pellet requires about a 6 O'clock spring tension setting on my gun. There is barely any hammer spring tension at the start today as my "O" setting is so light only a little air is coming out and wasted seconday hamer bounch air burp is kept to a minimum or not relevant.

I backed off the hammer spring another 1/2 turn from my "0" starting point and have almost no resistance on the spring when I start to cock it. The amount of pressure is just enough to have the spring in contact with the hammer, MAYBE a micro touch more. With this setting I still got 821fps with Monsters --- that is fantastic - If I was shooting 10.6gr Kodiaks that is EXACTLY what I would do :-)

I went back to my original setting for Monsters and she is getting 846fps right now.

Well, after about 45 minutes more of sending pellets through the air, I'm through shooting for the day -- I got 39 shots from 828fps to 863fps, my starting psi solidly was on 3000psi mark and shot to exactly 2100psi.

I'm sure if I turned down my spring that 1/2 turn as I did just to test today and shot that from the start, I can get 45 shots averaging in the 825fps + area, as it was today my average was 848fps and that was with 5 shots in the peak zone that did not register on the chrony.

Kodiaks !!!

I have not shot Kodiaks from this gun, but as mentioned, if turned down 1/2 or maybe more to start out in the 800 - 810fps to climb to the 840ish area, I bet you will get ~50 shots and enough energy for pesting in the 35-45 yard zone for Starling, Pigeons, and head shot Squirels at the 35 yard mark!! At 810fps about 10fpe at 40 yards

You Ratus Ratus guys could have a field day supplying the coyotes for miles around with food :-)

Man, I love this gun :-)

Later everybody

wll

[Ribbonstone]

A backwards research.

The spare mag ads claims the mag will fit into a QB II (1085) co2, Chief II, or a Commander.

 (Warning #1: some times the published ads lie...have no way of knowing, but it's happened in the past.)

Beeman 10-Shot Auto-Indexing Magazine, .22 Cal. | Pyramyd Air

What I have on hand s the .177 CO2 1085, but according to the above, the mag should fit and work..)

It will fit and feed the Senica 16.1 gr. 177’s.  Need a little poke to get those fat-headed pellets to get all the way down.

Cycles reliable, just a bit stiffer due to the larger pellet diameter…..don’t shoot well in the test rifle I have at hand, but the magazine worked and they COULD shoot well in your rifle.  Co2 is really soft-balling those  pellets, might be better luck to hard-ball them faster.

(Warning #2: "Same" pellet has chngged a bit over the years.  Excluding the old .177 EunJin or Sam Yang versions, the Seneca versions at hand run about .305” in length.  That mag seems to be able to function with lengths up to .34”).

[wll2506]

After shooting my CII+ yesterday I decided that this up coming weekend I will use some 10.5gr pellets (Kodiaks or CPM's).

I will set the hammer spring about 3/4 of a turn counter clockwise from my zero position. Betting that the difference in pellet weight I still will be able to send these "Light" pellets out in the low 800's with that super low spring tension. At the counter clockwise 6 o"clock position I was sending out 13.43gr pells out at the 825fps ---- with less spring tension I may be able even to send the 10.5gr ammo out close to this speed :- )

If I am, I bet I can get well over 50 shots with a bell curve in the 815ish to 840ish back down to 815ish. With this tune I'm after Starling sniper speed and number of shots. I may even give the power wheel one complete turn counter clockwise if speed is to much. I really don't want to go over 830ish at the bell curve peak !!

We will see what happens this weekend coming up ;-  )


wll

[Trucker3573]

Does anyone use a hand pump for this gun , was wondering how many pumps from 2000 up to 3000 ?

wll

My pump has a slight leak and I would say 50 maybe 55-60 with mine.

Do you know the size of the tiny o ring in the one way valve in the fill port?

[wll2506]

Does anyone use a hand pump for this gun , was wondering how many pumps from 2000 up to 3000 ?

wll

My pump has a slight leak and I would say 50 maybe 55-60 with mine.

Do you know the size of the tiny o ring in the one way valve in the fill port?

I don't  but I'm sure some body does :-)

wll