Author Topic: Custom Bottle Mrod .25 build started (Read 20444 times))

Rdsail · « **on:** May 11, 2015, 08:00:22 PM »

I got the parts from WAR. Bottle, Bottle adaptor and new Air tube.

My current build is a high power .25. I'm aiming for 100+ fpe.

I did had to bore out the brass fitting that connects the bottle to the bottle adaptor. It came with an opening of about ⅛ or 1/16. I did not measure it. I bore it out to .565 to match my valve throat which happens to be a WAR valve. For most people the plenum on the bottle kitshould be enough (50cc) for 50-65 fpe.

I had to modify the airtube to take .306 transfer port.

I'm still waiting for my breech and barrel to test out everything. Which is a TJ .25 26" barrel with threading and LDC. I will be putting Carbon fiber sleeve. The lead is for bullets and not pellet. I have a good assortment of casts and swags to test. All ranging from 40-65 grains.

Tube, block, bottle and 1.5 in guage.

I inlet the stock

The set up is holding air. No apparent leaks so far.

PakProtector · « **Reply #1 on:** May 12, 2015, 12:56:20 PM »

How long is the air tube?
cheers,
Douglas

YEMX · « **Reply #2 on:** May 12, 2015, 01:26:39 PM »

Did you have a custom breech made, or did you just order one from Crosman? This is something I'd like to do one of these days!!

Rdsail · « **Reply #3 on:** May 12, 2015, 02:24:31 PM »

Quote from: PakProtector on May 12, 2015, 12:56:20 PM

How long is the air tube?
cheers,
Douglas

My tube is 11 ¾ long

The breech is a .25 mrod breech

Monkeydad1969 · « **Reply #4 on:** May 12, 2015, 02:58:26 PM »

What kind of shot count are you trying to get out of it at 100fpe?

Joe

Rdsail · « **Reply #5 on:** May 12, 2015, 03:03:34 PM »

to tell you the truth. I have no idea. lol

My guess is that I could get 8-10 shots. This is uncharted waters for me

caniborrowsomeammo · « **Reply #6 on:** May 12, 2015, 04:21:44 PM »

My .25 Mrod with as received WAR valve 25 inch bbl and stock P tube gives me ~ 8 shots @ 94 FPE max and 91 avg at 3400 fill with 53 gr slugs. I see no reason you wouldn't get at least the same or better with a heavier slug and the I assume 13 (213cc) inch tank if you dare fill to 3400.

Rdsail · « **Reply #7 on:** May 12, 2015, 04:26:46 PM »

cool. Then I should be able to get more shots. I just don't have any Idea. My porting is fairly large so it should be able to handing a lower fill pressure or so I hope.

I also will have 7in more of barrel. That will help a ton

caniborrowsomeammo · « **Reply #8 on:** May 12, 2015, 04:31:29 PM »

My bbl is 25" TJ w/ stock shroud. After all said and done a 28" would have been better fitment wise. Maybe next time.

Rdsail · « **Reply #9 on:** May 12, 2015, 04:43:08 PM »

very cool! Mine is longer than yours. But no shroud for me.

caniborrowsomeammo · « **Reply #10 on:** May 12, 2015, 04:44:49 PM »

That's me, always the short one.

moorepower · « **Reply #11 on:** May 12, 2015, 05:04:36 PM »

I have a 28" TJ barrel on the bench, lets see what this can do!

shorty · « **Reply #12 on:** May 12, 2015, 05:55:44 PM »

I really like the bottle idea. I have a synthetic stock too. How did you go about cutting the stock? I am a little concerned about it. Hole saw ?

caniborrowsomeammo · « **Reply #13 on:** May 12, 2015, 06:12:57 PM »

BTW, shameless plug for Shorty^^^^ - try his 2.14" dual hammer spring if he is still making them. Really.

Rdsail · « **Reply #14 on:** May 12, 2015, 07:38:42 PM »

yes I used a hole saw and a round sander.

sixshootertexan · « **Reply #15 on:** May 12, 2015, 08:48:54 PM »

Looking good Dan.

PakProtector · « **Reply #16 on:** May 12, 2015, 09:58:14 PM »

I would consider slightly shorter barrels. The next one I am doing is 25" and .590 OD....but .30 pellet, not .25
cheers,
Douglas

caniborrowsomeammo · « **Reply #17 on:** May 14, 2015, 01:32:30 AM »

With the Mrod breech are you going to use magazine or SS tray? I ask because I can't get 65 Gr to fit in mag.

rsterne · « **Reply #18 on:** May 14, 2015, 01:41:24 AM »

50ish gr. is about the longest for the mag....

Bob

oldpro · « **Reply #19 on:** May 14, 2015, 02:56:42 AM »

For those 75 grain + slugs

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Custom Bottle Mrod .25 build started

Author Topic: Custom Bottle Mrod .25 build started (Read 20444 times))