Prod upgraded!

[darryl]

thanks RR. I was sitting here compiling a list of parts; all the while knowing I'd ask Crosman if the shroud would fit before I placed the order. I'd say I'd need more than that rise block to make the shroud fit and the pistol work.
darryl

edit: dummy me forgot that DK said the Mrod shroud was too big. but at least I ordered the barrel today. Ought to make the P worth a little bit more if I sell it, but I want to see how it shoots with the extra 8 inches. Careful. this is a family channel!

[Nomadic Pirate]

What Rat Racer says

[DeutschKSK]

I got the HDD today, I am pleased with it. Very simple to install.. I get 1 extra mag to fills now. My FPS was more consistent as well. I was not expecting much for the Prod model HDD but I have heard the Mrod HDD works wonders. Well worth the extra $.

-Matt

[huklbery]

I got the HDD today, I am pleased with it. Very simple to install.. I get 1 extra mag to fills now. My FPS was more consistent as well. I was not expecting much for the Prod model HDD but I have heard the Mrod HDD works wonders. Well worth the extra $.

-Matt

I got my Prod on Wed and the HDD arrived today.  Boy its allot smaller than I had realized (the HDD that is).  Tomorrow I want to order the Discovery hammer spring and I have the TKO Pistol Brake set for his next production run. Thanks Matt for all the pointers.

I have yet to run it across the Chrony so far but notice a big drop in the first 8 shots (2900psi - 2200psi) then a much more restrained release of gas in the next 16 shots.  I suspect I will have fun setting this up with FPS/Air conservation,  I'm guessing its possible with stock length barrel to get 32 shots ( I could live with 24 ) +700fps with + 14g pellets?  That should make a nice little yard gun for ground nutters.

Mark

[DeutschKSK]

I get 24 shots from 3000 psi down to 1900 psi. One more magazine after that brings me down to 1500 psi. My FPS is all in the 700s range.

[darryl]

where to get this HDD for the P-rod? How is the barrel working out? What was the FPS before the new barrel and the HDD? Is the barrel delivering the accuracy you want? inquiring minds want to know.
darryl

[RatRacer]

HDD- http://www.airgunsofarizona.com/CustomParts.htm

[DeutschKSK]

where to get this HDD for the P-rod? How is the barrel working out? What was the FPS before the new barrel and the HDD? Is the barrel delivering the accuracy you want? inquiring minds want to know.
darryl

From AoA as stated from RatRacer. The barrel is still breaking in. But I can achieve dime sized groups at 20 yards with Crosman Premiers. I have no problems hitting my targets I have set up at 80 yards. I need to do a 50 yard target and see what I get. The FPS has been around the same because I set it up to shoot 700 FPS.. I can't really make it any higher without using a different port size. .80 (default is giving me 710 to 760 max fps ) .120 gave me 850 fps.. this is of course with the settings to allow 3000 psi fill ups.

Over all I am very happy with all the mods that I have done to this gun. I have tomorrow off I need to re sight in due to me taking the gun apart yet again. But I will attempt a 50 yard group.. I am predicting 1 inch to 1.5 inches. Which is not bad.. but could be better.

I say go for it man.. Mrod barrel, HDD, Disco spring.. makes a big difference.

[DeutschKSK]

Here is my target from the other day at 20 yards. The left side is Crosman Premiers. First 2 shots high were me trying to get the elevation in check.. the other 6 shots are the group with one flyer.. or my bad shooting? Those 6 shots can be covered by a dime. Now to the Right those were jsb 18 grain pellets.. I guessed to where I thought I would hit so the first shot way up is just not accurate. the 7 shots below are the group.. they are alright. My Mrod did not like JSB pellets either. As the barrel breaks in I expect these groups to shrink a little. Over all I am pleased.

[darryl]

DK, thank you for this post, man. It's a really neat thing you're doing for the P-rod. I hope to follow along. A side note: because I'm interested in using the stock shroud, I'm looking to have an extension made that will cover the distance from the end of the P-rod's shroud back to the breech block. That, plus I will order an additional baffle, the HDD, and the Disco spring per your lead.

 

[darryl]

My M-rod barrel arrived today. It installed OK, but the notched area for the shroud mount's retaining screw is not in the location as it is on the P-rod's barrel. Since I intend to fully shroud this barrel, I'll need to file that retaining screw down a bit so the shroud threads can clear it. The barrel is really free-floating now.  I can't get the old barrel spacer off the old barrel. Am I supposed to heat it up or something? I'd like to use it, but no need in destroying it in trying to get it off. Good thing I have one on order. Preliminary testing shows that two of the three magazines I own need to be persuaded to cooperate with pushing the bolt through. Accuracy is a bit off compared to the P-rod's barrel; slightly wider groups at <ten yards. Haven't tried my 30 yard range yet. But it looks good and that's all that counts! j/k
darryl

[DeutschKSK]

Glad to see you got your barrel! Got any pics? Mine is sitting around for now.. I might turn the power down to 12ftlbs since I got my Marauder coming.. That will get here Saturday.. and my bad luck continues.. DOUBLE SHIFT!! 10am to 11pm.. rage! I should call out. ;p

Good luck, remember to clean that barrel out really good and if you used any fluids shoot at least 30 shots before the barrel sets in again. I just run dry patches through now. No need for a bore cleaner after I gave it a good cleaning from the start.

Matt

[darryl]

I got the spacer off. A tip from Mark on the Yellow: slide a box-end wrench over it and tap it off. Came off in seconds. I thought it was glued on or something at first. It's now on the new barrel
No pics yet. Soon. Yep, gave it is a good cleaning. Now to get that shroud spacer made. (hellooooooooo Jim Gaska!)
darryl 

[darryl]

pictures
the first one shows the comparative length of the barrels (the P-rod barrel is placed in approximately the position where it would be secured in the breech.
the next photos shows how much space there is between the shroud and the breech, 8".

[DeutschKSK]

Looking good my friend.

Matt

[darryl]

thanks Matt,
I've contacted Jim Gaska to make the shroud spacer needed to fully cover the barrel. Meanwhile I've lost the  fill cap somewhere, and have retraced my steps many times.  Maybe it fell out of my pocket while I was at the liquor store? Just goes to show, it's always something.

Meanwhile I put s few shots through it with no shroud on it and the accuracy is a bit off from the P-rod (used JSB Jumb0 15.9grain, 5.53mm in both barrels). I'm thinking the accuracy will improve once I install the shroud along with the additional barrel spacer. Now to continue the search for that fill cap!

[darryl]

OK, I found the fill cap. It's accurate to say it was under the last place I looked. I took some shots at 30 yards today, and the accuracy is not there. I've gone through several magazines now, so maybe it's time for a good cleaning. At 9.5 yards the accuracy is quite good, though.

Also, need a little science here. How does the longer barrel make the P-rod louder? As you can see in the one picture, the shroud is on. I would have thought the longer barrel might have meant a pressure drop at the muzzle, and so lower sound. Maybe once I get the barrel fully shrouded maybe I'll see a difference. I'm just not sure. I think I'll have to remove the barrel to get that extra barrel spacer on too. I can't get it any further on than the original, and I can't get that one on any further than it will go without me contemplating a serious beat-down on it. I hope the additional stiffness will aid accuracy once I clean the barrel. I'm also running into problems with the magazines now that I hadn't before. Cocking is not as thoughtlessly smooth as it was before the barrel swap. Maybe the new barrel is "off" somewhere? An interesting adventure, to say the least.
darryl

[DeutschKSK]

I just use a TKO discovery LDC on my Prod it works great! It's been a few days since I have shot my Prod.. my Mrod is here and up and running. Try to shoot some groups with out the shroud on.. if it shoots good then, then you know the problem.

Or it might be a bad barrel.. so option 2 is to get send the barrel back and get a new one. I am not too sure of Crosman's return policy.

[huklbery]

I'm still waiting for the Disco hammer spring but did install the HDD & TKO LDC (For the PRod on the stock shroud).  Both fit as they should and its just a "wuuff" noise now, much less noticeable.  No "Ping" like my .177 Marauder rifle either, perhaps the heavier hammer spring will change that.

https://picasaweb.google.com/105582855711747336970/MarauderPistolDebouncerInstall1032011?authkey=Gv1sRgCInk5pvSw96lqAE

Mark

[RatRacer]

OK, I found the fill cap. It's accurate to say it was under the last place I looked. I took some shots at 30 yards today, and the accuracy is not there. I've gone through several magazines now, so maybe it's time for a good cleaning. At 9.5 yards the accuracy is quite good, though.

Also, need a little science here. How does the longer barrel make the P-rod louder? As you can see in the one picture, the shroud is on. I would have thought the longer barrel might have meant a pressure drop at the muzzle, and so lower sound. Maybe once I get the barrel fully shrouded maybe I'll see a difference. I'm just not sure. I think I'll have to remove the barrel to get that extra barrel spacer on too. I can't get it any further on than the original, and I can't get that one on any further than it will go without me contemplating a serious beat-down on it. I hope the additional stiffness will aid accuracy once I clean the barrel. I'm also running into problems with the magazines now that I hadn't before. Cocking is not as thoughtlessly smooth as it was before the barrel swap. Maybe the new barrel is "off" somewhere? An interesting adventure, to say the least.
darryl

Darryl-
I've read that the folks that have swapped barrels in the Mrod have said that when doing so, the set the barrel with a mag in place. This allows for proper depth seating, fitment, and probably alignment too. Also check the inner barrel o-ring isn't jagged up in some way, as that will affect loading and accuracy.