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Author Topic: mrod to 30 cal ?  (Read 31489 times)

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #30 on: August 25, 2016, 02:21:03 PM »
3000 Psi per the gauge on tank as most of my crosman pcps will not show correct psi so I use one I bought on the tank side and it matchs up with all but the crosman  pcps ,the crosman dial shows hi side at red.

Dairyboy

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Re: mrod to 30 cal ?
« Reply #31 on: August 25, 2016, 03:09:14 PM »
Ok well them I'm confused with the 26.5" barrel you should be getting close to a 100fpe. Do you know what size the barrel port is? And the TP size?
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #32 on: August 25, 2016, 04:49:15 PM »
No but I think your on track as the port and the port thru the receiver area still is a standard size I believe. I will work on a larger transfer port and seal , I saw one somewhere I just need to find it again then I can open up the barrel port and when I finally got the barrel all he could make was a 24 inch barrel, I still think it is capable of more and I think the port is it.
thanks

Dairyboy

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Re: mrod to 30 cal ?
« Reply #33 on: August 25, 2016, 05:14:24 PM »
Yeah I know hill has a .187 port that works great with his .30cal valve. My barrel port is opened to .187 as well which is why cranked up I can get 90fpe
  • Outlook, WA
John 3:16

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cpt_sfc

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Re: mrod to 30 cal ?
« Reply #34 on: August 25, 2016, 05:49:07 PM »
Ordered 2 Ports in case I screw it up or I will put one in the .25 m-rod. Thanks

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #35 on: August 29, 2016, 01:48:18 PM »
Ok got the air port in from hill, seems to work great . first shot at 3000 psi was 983fps, 9th shot at 794 FPS now I will tinker with settings will let you know. I would not recommend the alum port for this as it is to thin and the air collapsed  it,  and sucked the rubber o ring seal up and out the bore. Weird !!! I will run a string this week and post it. Thanks for all the help.

Dairyboy

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Re: mrod to 30 cal ?
« Reply #36 on: August 29, 2016, 02:09:19 PM »
Now that's what I like to hear! Now just get it tuned up to how you want it and enjoy it!
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #37 on: September 03, 2016, 02:07:26 PM »
OK all, no targets yet but have been shooting it around the acres. It is loud. 24" barrel 3000 PSI start fill. FPS IS!!!, Hunt gun so only concerned with 6 shots. 30 cal. 44.75 gr pellet lubed with bike  chain wax. Shot#
1. 992 fps
2. 973
3. 964
4. 940
5. 932
6. 911  It gets a closer es as you drop another 6 but I only need 6 walking in the woods may only shoot 1-3 shots. FPE is 97.8 for shot #1 down to 82.4 for shot6.That is per AGD chart. first shot varies from 992-994 ?. One foot from muzzle.

Monkeydad1969

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Re: mrod to 30 cal ?
« Reply #38 on: September 04, 2016, 07:19:01 AM »
AV. 952fps
AV. 90fpe

I seem to have an issue with those numbers.  I wan't you to take apart the action from the stock, then...oh, that's just to much for me to explain.  Just send me the rifle and let me shoot it this season.   ;D

Joe
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Joe the P-Dawg Slayer!!!!!

Dairyboy

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Re: mrod to 30 cal ?
« Reply #39 on: September 04, 2016, 07:49:36 AM »
Great numbers! I just played with mine but went the opposite way in power. 15 shots at 3.2% ES at 67fpe on a 2700psi fill. More of a Polymag tune as with my barrel accuracy tightened up real nice under 850fps with the Polymags. My JSB tune I get 10 shots within 1.4% ES at 77fpe!
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #40 on: September 05, 2016, 08:48:06 AM »
I need a shallow cap to screw into shroud, barrel almost to end. Have about 3/8 inch to muzzle can be large center hole as just a thread protector, air stripper was drilled out and sld about 2 inchs back on barrel to keep O- ring in contact with shroud and muzzle steady. Will attempt pics. One group at 25 yards off hand leaning on door frame as pressure dropped 2 shots went high, 6 tot. Also shot of muzzle. Will try 50 yd group next but from sand bag.

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #41 on: September 05, 2016, 08:49:10 AM »
other pic muzzle end

cpt_sfc

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Re: mrod to 30 cal ?
« Reply #42 on: September 10, 2016, 11:12:36 AM »
OK all this is a 50yd group, cold not a pic of litter. Walked out put up target. filled m-rod to 3000PSI loade 6 Vortex 44.75 gr pellets. Shot 6 times with sand bag only under forearm from 1st shot 983FPS to 911FPS at 6th shot, same POA/POI as 25 yd. quarter next to group for ref:. 4x AIM 29 dollar scope from crossbow, kinda heavy cross hairs. Hope pic works.
Thanks to all that encouraged me.

caniborrowsomeammo

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Re: mrod to 30 cal ?
« Reply #43 on: September 10, 2016, 11:35:59 AM »
Hell, I wouldn't complain about that group for a hunting rig. Especially with 4x and heavy reticle.
« Last Edit: September 10, 2016, 11:38:15 AM by caniborrowsomeammo »
Buncha BB guns that I don't get to shoot as much as I like.

Dairyboy

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Re: mrod to 30 cal ?
« Reply #44 on: September 10, 2016, 01:33:33 PM »
Nothing wrong with that whatever your hunting will be down for the count!
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA