Benjamin My .177 mrod shoots slugs, anyone else’s ??

[Perle]

I’ve had this rifle since 2010.
( .177 Mrod )
It likes 4.53 / 4.52 pellets. A Lot ! It shoots JSb 10.3 and HN 10.65

On a whim I tried JSb knockout slugs in 10.03
Oh boy what a surprise !

Anyone else have any luck with Marauders and slugs ?

Note. Upon further evaluation I misspoke.
Does NOT shoot them well enough for target or hunting.

Sorry gents got excited with a few lucky groups.

 

[6gun]

My 25 mrod with a gm barrel won't shoot slugs to save it's life either. Does an airgun slug need to obturate to the bore like a pb? If it does, I suspect the mrod has too kind of an Initial air pulse.

 

[mercado]

My 25 mrod with a gm barrel won't shoot slugs to save it's life either. Does an airgun slug need to obturate to the bore like a pb? If it does, I suspect the mrod has too kind of an Initial air pulse.

Most problem in .25 is the choke is way to tight because is designed for pellets only..not only for the mrod, old hatsan, crickets, taipans, n uragan 1 .. suck shooting slugs because of the tight choke.. I recently purchased a taipan standard, that supposedly had a unchoke barrel since it uses the barrel of the taipan 2 and what a different it shoots slugs 34gr knockouts and 34gr fx pellets perfect even when going at best 840fps .

 

[AirSmithCA]

The Green Mountain barrel on my old .25 Mrod was a machining disaster. It didnt shoot well at all but I don't the twist rate is a problem for lighter weight short slugs. I've got a few rifles in multiple calibers, with 17-18" twist rate barrels that throw the airgun slugs quite well. Some of the larger caliber purpose built air sluggers do use a faster twist with the longer, heavier ammo. A choked barrel can launch slugs accurately but there is usually a significant drop in FPS using slugs vs pellets.

 

[6gun]

The Green Mountain barrel on my old .25 Mrod was a machining disaster. It didnt shoot well at all but I don't the twist rate is a problem for lighter weight short slugs. I've got a few rifles in multiple calibers, with 17-18" twist rate barrels that throw the airgun slugs quite well. Some of the larger caliber purpose built air sluggers do use a faster twist with the longer, heavier ammo. A choked barrel can launch slugs accurately but there is usually a significant drop in FPS using slugs vs pellets.

Welp perle I'm hijacking the thread it would seem (we're pals).

I was stoked to see it had a gm barrel when I bought it new because the barrel on my 22lr that kept me in the top 2 of the leader board for a couple years was a gm, beating out every other ruger barrel maker you can think of (it wasn't the barrel doing all the magic, i was headspaced for the match ammo I had a crate of) . The choke is definitely the issue for me the machining is top notch surface finish/deburring/bluing on my example. It only shoots jsb kings precisely and fast enough for my wishes on all stock components now. Which is fine with me. I got a 25 dreamline that is everything I wished my mrod to have been.

Slugs, I learned this lesson the hard way on an impact. Slugs aren't really any advantage till 100 yards for me, but i haven't put my toe into the 177 waters until today so it may be a much larger gain for a mid to high powered 177 gun WITH LITTLE OR NO CHOKE. If fx and lw use less or no choke for slug barrels , I figure there's reason.

Hang on to that mrod perle, I get the feeling the "good" era of crosman is going to become relatively desirable soon. Iirc putting the 25 valve into he 177 and 22 gave them a bit more cajones too. It's been a while since I was in the crosman pcp world but I'm back now, as you know.

 

[oneshot61]

I have a .25 armada (modified).. green mountain barrel. I polished the barrel with non imbedding bore paste, then mothers mag wheel polish.. the cleaned it with goo gone. I polished the choke as well . Crazy accurate with slugs and pellets. I think polishing the choke helped a lot… y’all may try that??

 

[Perle]

Welp perle I'm hijacking the thread it would seem (we're pals).

I was stoked to see it had a gm barrel when I bought it new because the barrel on my 22lr that kept me in the top 2 of the leader board for a couple years was a gm, beating out every other ruger barrel maker you can think of (it wasn't the barrel doing all the magic, i was headspaced for the match ammo I had a crate of) . The choke is definitely the issue for me the machining is top notch surface finish/deburring/bluing on my example. It only shoots jsb kings precisely and fast enough for my wishes on all stock components now. Which is fine with me. I got a 25 dreamline that is everything I wished my mrod to have been.

Slugs, I learned this lesson the hard way on an impact. Slugs aren't really any advantage till 100 yards for me, but i haven't put my toe into the 177 waters until today so it may be a much larger gain for a mid to high powered 177 gun WITH LITTLE OR NO CHOKE. If fx and lw use less or no choke for slug barrels , I figure there's reason.

Hang on to that mrod perle, I get the feeling the "good" era of crosman is going to become relatively desirable soon. Iirc putting the 25 valve into he 177 and 22 gave them a bit more cajones too. It's been a while since I was in the crosman pcp world but I'm back now, as you know.

We are pals !!

 

[Perle]

It was naive of me to think my .177 Maruader could shoot slugs. Velocity wa not the issue as it slings 10.6 pellets @ 920 ish range
It was tuned way back then by Greg Davis.

Now my .25 Mrod like yours 6gun is in its totally stock form. That’s an accurate gun with those very specific 25.39 JSb Kings !!

 

[Motorhead]

Having played around quite a lot with .177 slugs, the issue is not the gun per-say but the barrel fitted to it. The .177 marauder mechanically is very slug doable as it is the choked barrel and generally a tad oversize bore where the combo does not work well as a slugger
Now go buy an LW 12g No Choke barrel & run it at full length and get it fitted ya got an excellent modest power slugger IMO
* Toss in a JSAR "M-rod spec" balanced valve with a light hammer ... you can create a beastly slugger.

 

[Perle]

The stock barrel seems relegated to those larger head diameter .177s , at least in the first gen iterations anyway ( from what I’ve read and heard and experienced )