Author Topic: Mk2 Impact (Read 4243 times))

YEMX · « **on:** February 03, 2022, 01:49:18 PM »

Well, after getting a Maverick, I've been debating what to do with the Impact. I've decided to set it up as a .357 pellet shooter. I may try some lighter slugs, but for now, it's pellets. Some parts to get the ball rolling:

Huma .357 conversion kit (more parts than just a larger port and probe)
.357 800mm barrel kit from Utah Air
700cc bottle from Airgun & Archery Fun

I also got a .357 magazine from Utah Air at the same time as the barrel kit. Let's see how she does!

GSu · « **Reply #1 on:** February 03, 2022, 06:21:54 PM »

Going to .35 with the Huma kit should be interesting. I am curious to see what kind of numbers you can get.
I'll be following.

mr007s · « **Reply #2 on:** February 03, 2022, 06:25:32 PM »

Quote from: GSu on February 03, 2022, 06:21:54 PM

Going to .35 with the Huma kit should be interesting. I am curious to see what kind of numbers you can get.
I'll be following.

X2

YEMX · « **Reply #3 on:** February 04, 2022, 07:12:54 AM »

Same! I've already got the high pressure reg in there. I'm VERY curious to see what the .357 kit will do!

GSu · « **Reply #4 on:** February 05, 2022, 01:13:33 AM »

I have a kit here for my partner's .35 Impact MKII power plenum. No regulator change though. I have no clue when he will show to install the kit.
I think you'll get done before I do.

YEMX · « **Reply #5 on:** February 12, 2022, 02:58:59 PM »

In case anyone was wondering what a 800mm barrel and 700cc bottle looks like on a Impact Mk2:

GSu · « **Reply #6 on:** February 12, 2022, 06:33:12 PM »

Wow looks great with the 700cc battle and 800mm barrel. My partner is looking to get that bottle too. Everything is still on hold while he decides what too do.

YEMX · « **Reply #7 on:** February 12, 2022, 09:13:31 PM »

It's growing on me. The trigger guard will be swapped out for the longer Saber Tactical one I have. That'll be later though, it's not very high on my to-do list.

bear air · « **Reply #8 on:** February 13, 2022, 08:21:24 AM »

Looks pretty sweet Tom.

Tonycalves · « **Reply #9 on:** February 13, 2022, 01:49:44 PM »

Nice. I was contemplating doing the same thing with my Compact. What #s is it putting out, and OAL? Good luck

YEMX · « **Reply #10 on:** February 13, 2022, 07:46:44 PM »

Quote from: bear air on February 13, 2022, 08:21:24 AM

Looks pretty sweet Tom.

Danke!

Quote from: Tonycalves on February 13, 2022, 01:49:44 PM

Nice. I was contemplating doing the same thing with my Compact. What #s is it putting out, and OAL? Good luck

No idea yet- I haven't had the time, been doing other things lately. I'll get a OAL tomorrow- but that'll change when I get a new butt-plate.

mann · « **Reply #11 on:** February 14, 2022, 12:31:45 AM »

Any plans to go to 720 power plenum?

YEMX · « **Reply #12 on:** February 14, 2022, 06:15:31 AM »

Quote from: mann on February 14, 2022, 12:31:45 AM

Any plans to go to 720 power plenum?

Not at all. I'm not 100% convinced it's better. Or rather, I'm not convinced it's worth the money.

GSu · « **Reply #13 on:** February 19, 2022, 04:06:00 AM »

My partner showed up to work on his MK II power plenum .35 today. We went with the heavy hammer and hammer spring from the kit but didn't use the pin probe as he still wants to shoot pellets. Valve is at 4 lines, regulator is at 150 bars, wheel set min, and it is interesting to dry fire.
His eyes got real big when he pulled the trigger! The hammer spring adjuster all the way in with the wheel at min. The second shot was with the hammer spring adjuster backed out all the way. The Ronin took care of the noise. We didn't check the gauge to see how much the pressure dropped for 2 dry fires.
Cannot shoot here at my house or his so chronograph numbers and tuning is going to be done later. He left here for home with a huge smile on his face.
The Huma slug power kit for the .35 works. Trigger time will tell how good.

YEMX · « **Reply #14 on:** February 19, 2022, 07:29:01 AM »

Quote from: GSu on February 19, 2022, 04:06:00 AM

My partner showed up to work on his MK II power plenum .35 today. We went with the heavy hammer and hammer spring from the kit but didn't use the pin probe as he still wants to shoot pellets. Valve is at 4 lines, regulator is at 150 bars, wheel set min, and it is interesting to dry fire.
His eyes got real big when he pulled the trigger! The hammer spring adjuster all the way in with the wheel at min. The second shot was with the hammer spring adjuster backed out all the way. The Ronin took care of the noise. We didn't check the gauge to see how much the pressure dropped for 2 dry fires.
Cannot shoot here at my house or his so chronograph numbers and tuning is going to be done later. He left here for home with a huge smile on his face.
The Huma slug power kit for the .35 works. Trigger time will tell how good.

That is EXCELLENT news!! I've been busy getting my newly acquired E250 van up and running, so I haven't been very busy w/my other projects...

YEMX · « **Reply #15 on:** February 20, 2022, 07:12:24 AM »

I measured the Impact the other day, w/the 800mm barrel- w/o a LDC it's 37.25" OAL. That's w/the factory butt-plate.

GSu · « **Reply #16 on:** February 25, 2022, 12:39:48 AM »

We got to test the .35 today. 155 bar reg. setting (stock regulator), wheel on max, hammer spring preload about 2 1/2 turns from minimum, valve adjuster a little past the fourth line. (Sorry I do not have the measurements for the valve adjuster and the hammer spring gap width. My partner has the measurements.) 905 fps average for 1 magazine of 81 grain pellets. Very accurate at a lasered 45 yards. Partner has a huge grin after testing today. A Ronin is a little lacking in the noise department. More to come.

YEMX · « **Reply #17 on:** February 25, 2022, 06:28:34 AM »

Quote from: GSu on February 25, 2022, 12:39:48 AM

We got to test the .35 today. 155 bar reg. setting (stock regulator), wheel on max, hammer spring preload about 2 1/2 turns from minimum, valve adjuster a little past the fourth line. (Sorry I do not have the measurements for the valve adjuster and the hammer spring gap width. My partner has the measurements.) 905 fps average for 1 magazine of 81 grain pellets. Very accurate at a lasered 45 yards. Partner has a huge grin after testing today. A Ronin is a little lacking in the noise department. More to come.

VERY nice!! I look forward to further testing!

YEMX · « **Reply #18 on:** September 03, 2022, 11:59:58 PM »

Okay- been away from this build for a while now. Some changes!

.25 slug shooter. Going to stay around the lighter (i.e. pellet weights) slugs
Keeping the 700cc bottle
700mm barrel
Got a TRS from Saber Tactical
Got a M3 power wheel

I'll keep y'all posted. Side note: I hate adulting!!

Tonycalves · « **Reply #19 on:** September 04, 2022, 08:45:12 PM »

Was hoping to see what you could milk out ofthe .35 conversation. My .25 compact MKII shoots mp 6.35s very well, just doesn't get those high velocities. You should be able to achieve your goal in .25 fairly easily. GL

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Mk2 Impact

Author Topic: Mk2 Impact (Read 4243 times))