Billm
Grand HAMster
There’s some tight groups there.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Others New drs tactical mk2
- Thread starter Solo1
- Start date
- Latest activity Latest activity:
- Replies 179
- Views 6K
- Original poster
- #162
This is with out a doubt the best 22 slug combo i have ever had the pleasure to shoot. It shoots fairly easily and for sure is more accurate than i.
Billm
Grand HAMster
Cantona256
HAM Expert
Im so glad you got it setup so well! Those groups are really nice.
I completely agree with your assessment too. I find the gun to be an exceptional shooter. It just feels good to shoot.
Cantona256
HAM Expert
These are now available for purchase for those that are interested. I have mine on the way.
PLANS:
So after much deliberation I’ve decided I’m gonna set aside future .357 plans and I’m gonna go all in on the DRS.
Specifically, I’m gonna build a 150fpe DRS. With the transfer port I’ll have that and the slug power kit sorted. Apparently the tungsten hammer is only 14grams the heavy Huma brass one is 14.2grams.
The main thing is I’m gonna convert it to an 800mm barrel. Specifically the 800mm solid barrel…. I’m gonna machine my own shroud/air tank. It’s actually not hard because that diameter tube is pretty standard. I’m gonna make mine out of 7075-T6 and drop the Huma regulator in it so I will be able to fill to 250Bar+ and set the reg above 170Bar since the Huma goes up to 200Bar. All the tube needs is to be cut to the right length and threaded.
Do I need to do it? Nope. Haha but it’s too much fun to play with these things. I have yet to own a gun that I haven’t modified and I’m not in the mood to make a whole new stock adapter to make my own bottle mod.
800mm will increase air capacity to 355cc
That sounds awesome! Show'em how they should have built it. Machinist is so much cooler than shade tree tinkerer like I am. You picked the right hobby for your skill set! Imagine what you'll be doing when you get bored, I can't even begin to imagine it. The world's your oyster!
Cantona256
HAM Expert
It’s so funny because neither machining nor airgunning was on my dance card 10 years ago.
I used to be heavily involved in football(soccer). I’m American but my dad was in the military so I grew up all around the world. Soccer was my passion/hobby/job all at the same time.
Long story short I decided to move away from all of that and felt pretty listless for awhile afterwards. I was also tired of working in middle management/meaningless corporate BS.
Now I’m probably happier than I ever have been. I do make less money, which sucks, but I work 4 ten hour shifts so I have permanent 3 day weekends.. and when I leave the shop I’m down for the day. No emails, not conference calls, no BS. It’s great.
The fact that my job also happens to be great for airgunning is wonderful. Yesterday I finished a 31” Lothar barrel for DJ at Heartland Air. He’s gonna have the highest power Karma EQ around. Then I started modifying a 34” Skout barrel to fit into a Barra 250z… the projects and ideas are starting to pile up to the point that I’m gonna buy my own lathe.
I think this hobby is too expensive and for as much as we love modding these guns it’s also a pain in the A$$… A buddy of mine paid $300 to have his barrel threaded. If I had the right lathe I could have done in 20min for $50… So my long term goal is to be able to offer reasonable custom work for my fellow airgunners.
Cantona256
HAM Expert
101 FPE
Okay so after playing with the 93-ish FPE settings for the last couple of weeks I decided to push the reg up to 155bar from 140bar.
I found that the 13gram HS weight wasn’t really able to push the 50gr Franco’s above 925-930fps but the shot count was absolute trash. Right around 917-920 there was a nice spot to get about 20 a fill but that wasn’t impressive either.
I added the 14.2gr brass weight as well. Im not gonna lie I forgot how many clicks I went in haha but its below half.
Now Im shooting some crusty old 52gr Patriot Javelins, literally packeted in 2022
… but she doesn’t care y’all. Stacking at 51y going 935fps.
Still getting at least 20 fill but probably more like 23-25. So that tells me I’m probably on the right track.
Accuracy is hard to use as a metric as I’ve only tried 3 slugs and it stacks all 3. To be fair I’ve only shot lightweight slugs so far so that’s a caveat. But considering mag size really limits the length of projectiles most people ain’t gonna be shooting heavy out of this thing.
Notes:
Idk if it’s an AMP regulator thing or a DRS thing but this gun is easy to tune. It’s not quick to tune though. The reg needs at least 10-15 shots to properly settle and maybe 2-3 shots after adjusting the hammer spring.
Okay so after playing with the 93-ish FPE settings for the last couple of weeks I decided to push the reg up to 155bar from 140bar.
I found that the 13gram HS weight wasn’t really able to push the 50gr Franco’s above 925-930fps but the shot count was absolute trash. Right around 917-920 there was a nice spot to get about 20 a fill but that wasn’t impressive either.
I added the 14.2gr brass weight as well. Im not gonna lie I forgot how many clicks I went in haha but its below half.
Now Im shooting some crusty old 52gr Patriot Javelins, literally packeted in 2022
… but she doesn’t care y’all. Stacking at 51y going 935fps. Still getting at least 20 fill but probably more like 23-25. So that tells me I’m probably on the right track.
Accuracy is hard to use as a metric as I’ve only tried 3 slugs and it stacks all 3. To be fair I’ve only shot lightweight slugs so far so that’s a caveat. But considering mag size really limits the length of projectiles most people ain’t gonna be shooting heavy out of this thing.
Notes:
Idk if it’s an AMP regulator thing or a DRS thing but this gun is easy to tune. It’s not quick to tune though. The reg needs at least 10-15 shots to properly settle and maybe 2-3 shots after adjusting the hammer spring.
Cantona256
HAM Expert
I think you’re probably right… I also should have said it’s not a complaint. The reg is rock solid so I have no complaints.
Eventually I will put in the Huma reg but I’m not in a rush.
- Original poster
- #171
I really am not impressed with the huma. In my gun the amp worked just as well and the straight slot in the huma means i have to remove the fore stock to adjust. The hex in the amp makes that unnecessary.
I was actually thinking of polishing the amp and putting it back in.
Cantona256
HAM Expert
Oh that’s really good to know! My main draw was the extra 30bar of top end but it sounds like there’s some serious drawbacks to that.
Also the more I test the gun the more I’m convinced the extra 10cc of plenum between the stock and SHP plenum is significant. I think my gun would probably top out at like 115fpe without it.
Luckily I’ll have the Huma transfer port to test this week. From what I’ve read it seems like a significant fps boost.
Cantona256
HAM Expert
Just a highlight reel from yesterday.
Pro tip: For bigger critters the hex slugs over-expand if you shoot them too fast. Unless you’re shooting pest birds I recommend keeping them between 880-920fps.
Final shot is moving up to a 52gr patriot javelin and I liked it much better.
The Hex slug is a magnificent slug and won’t cost you a lot of air to shoot. I was testing to see their performance at about 1000fps and the result was….”just go heavier.”
Pro tip: For bigger critters the hex slugs over-expand if you shoot them too fast. Unless you’re shooting pest birds I recommend keeping them between 880-920fps.
Final shot is moving up to a 52gr patriot javelin and I liked it much better.
The Hex slug is a magnificent slug and won’t cost you a lot of air to shoot. I was testing to see their performance at about 1000fps and the result was….”just go heavier.”
- Original poster
- #174
Good shooting!
Billm
Grand HAMster
I have mixed emotions about the Amp2 vs Huma. On the Panthera MKII the Huma reduced the refresh rate a little. There was no other obvious benefit. On the other hand, being able to adjust down without degassing is nice and based upon the regulator position, using an “L” hex wrench makes way more sense.
Cantona256
HAM Expert
I think I underestimated the stock power levels on this gun.
I wasn’t paying attention last night and accidentally some 60gr Javelin slugs instead of the 52gr. With a couple clicks of the hammer spring they will do 910fps… and while it was only 30 yards they were hitting the same spot every time.
Reg is still at 155bar and with the heavy hammer spring weight.
This gun continues to really impress me. From everything I’ve heard about the impact I low key expected the DRS to be a bit a fussy princess. My experience has been the exact opposite. She’s a nasty thing that so far will stack any slug I feed her. A lot more rugged than I can expected.
I wasn’t paying attention last night and accidentally some 60gr Javelin slugs instead of the 52gr. With a couple clicks of the hammer spring they will do 910fps… and while it was only 30 yards they were hitting the same spot every time.
Reg is still at 155bar and with the heavy hammer spring weight.
This gun continues to really impress me. From everything I’ve heard about the impact I low key expected the DRS to be a bit a fussy princess. My experience has been the exact opposite. She’s a nasty thing that so far will stack any slug I feed her. A lot more rugged than I can expected.
Cantona256
HAM Expert
I have 5 FX rifles, three of which had leaks through the reg. On one, I replaced the old reg with a new AMP reg and the other two, I rebuilt the regs including new O rings in the block. They work fine. As these get older, (and mine were old), the O rings get brittle and stick or leak. New O rings that are correctly lubed work just fine.
Cantona256
HAM Expert
Huma is on the right and FX on the left.. not a whole lot of difference but the slots on the Fx one are a little bit more narrow than the Huma.
Without the pin probe it expect a 10-20fps boost without changing any settings… if you add the pin probe at the same time it’s more like 25-40fps.
I was able to push the 52gr javelins to 965-967fps without touching anything.. up from about 940-945… pushed power up to 107fpe and I’m still only at 155BAR.
Trying to decide if I wanna add the SHP plenum now or just go full ‘tard and start machining my 800mm shroud first
Create an account or login to comment
You must be a member in order to leave a comment
Create FREE account
Create a FREE account on our community. It's easy!
Log in
Already have an account? Log in here.
