Desert Precision Gunworks 22LR Action Updates

I keep up with 3 of these rifles so let me explain just a little bit.

For the bolt that goes with the pics above the pin is out 2 turns with a 15 lb. white spring.

On my bolt the pin is out 2 turns with a 14 lb. red spring.

On the 3rd bolt the pin is out 1 turn with a 14 lb. red spring.

Each bolt is just a little different but set up the way I described they all give the same results.....firing pin strike and on target. I found differences in where the cocking piece indexes when the pin is screwed all the way in and also in the number of turns out it takes for the firing pin to bottom out in the bolt nose.

My headspace is .043/.044 best I can tell.

Hope all this makes sense Sir.

I did the tuning of the firing pin, and I went from 22# spring down to a 15# spring. I never had any failures to fire, but after running a few hundred rounds of ammo, I have found the 22# spring to still have the best SD/ES and group sizes. So I've just left it at 22#.
 
  • Like
Reactions: BowChamp
I keep up with 3 of these rifles so let me explain just a little bit.

For the bolt that goes with the pics above the pin is out 2 turns with a 15 lb. white spring.

On my bolt the pin is out 2 turns with a 14 lb. red spring.

On the 3rd bolt the pin is out 1 turn with a 14 lb. red spring.

Each bolt is just a little different but set up the way I described they all give the same results.....firing pin strike and on target. I found differences in where the cocking piece indexes when the pin is screwed all the way in and also in the number of turns out it takes for the firing pin to bottom out in the bolt nose.

My headspace is .043/.044 best I can tell.

Hope all this makes sense Sir.
Thank yo for the information, greatly appreciated. My last tuning of my V22S bolt is 4 turns out with a 20 b spring. The index from screwed all the way in is 3/4 of a turn, so the bolt is now 4 & 3/4 out. I test my V22s using the Eley x-shot targets, for me groups don't seem to tell me much. Shooting for score on the x-shot target tells me how I and the gun are doing. My last two targets shooting a new lot of center x are the best I have ever shot with the V22S one was 250/250 x18, calculated group 9.03mm, the other was 249/250 x17 group 9.79mm. So I am at 4&3/4 turns with a 20lb spring. I like the results a lot but don't know how I got to this point with the bolt, other than trial and error. I want to understand how, not trial and error. Mike Bush says the VG video is not how to tune the bolt, waiting for his reply to my how-to do-it question.
 
  • Like
Reactions: Jeffd and BowChamp
I did the tuning of the firing pin, and I went from 22# spring down to a 15# spring. I never had any failures to fire, but after running a few hundred rounds of ammo, I have found the 22# spring to still have the best SD/ES and group sizes. So I've just left it at 22#.
You've got one on me, I have no idea what the SD/ES numbers are on the ammo I've been shooting. In the last 12 months I've probably shot well over 50 different lot #'s of ammo.

Have you modified the tip of your firing pin to hit inside the rim?
 
Thank yo for the information, greatly appreciated. My last tuning of my V22S bolt is 4 turns out with a 20 b spring. The index from screwed all the way in is 3/4 of a turn, so the bolt is now 4 & 3/4 out. I test my V22s using the Eley x-shot targets, for me groups don't seem to tell me much. Shooting for score on the x-shot target tells me how I and the gun are doing. My last two targets shooting a new lot of center x are the best I have ever shot with the V22S one was 250/250 x18, calculated group 9.03mm, the other was 249/250 x17 group 9.79mm. So I am at 4&3/4 turns with a 20lb spring. I like the results a lot but don't know how I got to this point with the bolt, other than trial and error. I want to understand how, not trial and error. Mike Bush says the VG video is not how to tune the bolt, waiting for his reply to my how-to do-it question.
Like yours one of our pins is 3/4 turn and the other two are only 1/8 of a turn from index when the pin is all the way in. This is one of the very noticable differences I've found. Another is none of the three pins turn out the same number of turns from index to touch the bolt nose. These differences are the reason it's difficult to go by how others set up their firing pins and springs.

The more you turn your firing pin out, the more relaxed the firing pin spring is. On the other end, if you don't turn the pin out far enough you take a chance on the cocking piece bottoming out inside the bolt tailpiece when fired.

Sounds like your rifle is shooting pretty good so you shouldn't have any trouble fine tuning it. I think good ammo and reading conditions are the two biggest factors of all.

Thanks!!!
 
You've got one on me, I have no idea what the SD/ES numbers are on the ammo I've been shooting. In the last 12 months I've probably shot well over 50 different lot #'s of ammo.

Have you modified the tip of your firing pin to hit inside the rim?

Yes, maybe I could do more -

1754622362097.png
 
  • Like
Reactions: BowChamp
Sorry if this has been asked but any plans for a single shot, or even a plug for the current action for the BR guys?
Yes, I already have a single shot adapter mag buffer and already have a action design for a dedicated BR setup flat bottom with mid locking lug as the next project once these are smooth production
20250612_124652.jpg


Im already running action bodys. Bolt assemblies and made some final refinements. Once things get rolling, ill have options for ejection port configurations E.G: Left Port Right Hand.
The goal is to have a system of manufacturing checks to keep all tolerances within a thousandth 0.001.
Made some big investments in a 5 axis VMC's and I'm currently enrolled in a class in heat treating. I will be in house heat treating my own parts
 

Attachments

  • 20250612_124724.jpg
    20250612_124724.jpg
    1.9 MB · Views: 84
Yes, I already have a single shot adapter mag buffer and already have a action design for a dedicated BR setup flat bottom with mid locking lug as the next project once these are smooth productionView attachment 8745330

Im already running action bodys. Bolt assemblies and made some final refinements. Once things get rolling, ill have options for ejection port configurations E.G: Left Port Right Hand.
The goal is to have a system of manufacturing checks to keep all tolerances within a thousandth 0.001.
Made some big investments in a 5 axis VMC's and I'm currently enrolled in a class in heat treating. I will be in house heat treating my own parts
Def looking forward to your BR action with left port.
 
Incase those didnt see the YouTube video of Rim-X mag compatible and 17HMR/22WSM capabilities. Also shows the reliability of the control round feeding without a barrel.

The firing pin was turned in to not allow protrusion for those concerned for a live round to go off in the video.

Check out the video here
 
Last edited:
I got my rifle back this weekend. Unfortunately, with all the rain here in Texas, I only got one day to test it.

A few small tweaks are being made on the bolt stop and extraction areas and feeling confident that this is very very close to meeting Kenny’s high standards.

I’m expecting a few parts, and a 95% production rifle to test compared to my prototype and should have another update by next weekend.

I’m looking to take a DPG to the Rimfire Nationals at the end of this month. No harder test than that.
 
I got my rifle back this weekend. Unfortunately, with all the rain here in Texas, I only got one day to test it.

A few small tweaks are being made on the bolt stop and extraction areas and feeling confident that this is very very close to meeting Kenny’s high standards.

I’m expecting a few parts, and a 95% production rifle to test compared to my prototype and should have another update by next weekend.

I’m looking to take a DPG to the Rimfire Nationals at the end of this month. No harder test than that.
Where are the Rimfire nationals? Can you leave the name and date? Id like to go watch if close enough.
 
Where are the Rimfire nationals? Can you leave the name and date? Id like to go watch if close enough.
 
  • Like
Reactions: RickNutt
Sorry fellas, been really busy in production with these actions.

I wanted to share a video showing how these action bolt raceways are precision wire EDM cut. These will be a true precision made action!. These Genes1s actions are prepared action body rounds with the barrel threads already done and bolt raceway are then burned concentric to the threads with a wire edm. Ensuring perfect concentricity of barrel alignment to the bolt assembly.
Its an extra step and adds more time in production, but ensures a better overall quality

1000003764.jpg


1000003765.jpg




Here's a small video of one of the last actions being tested before production. It got first in a 300 yard long Gong match last weekend, less than 100 rounds in the barrel. Fresh off the lathe
Im keeping the smoothness as much as I can while still implementing the rear bolt retention system. Having this feature does add a small slight resistance moving the bolt back and forth. Really not felt if your running the bolt normally, but can feel the slight resistance taking a "benchrest" slow chambering

My question to you, do you guys want this feature?

 
I like the bolt retention feature. I'd hazard a guess that a good portion of failure to feeds are because the bolt slid forward at some point and partially dislodged a round from the mag. I haven't had it happen as much with my Vudoo but it happened several times with my Bergara when I ran one.
Is it something that could be removed from the action if the user decides they didn't like it?
 
I like the bolt retention feature. I'd hazard a guess that a good portion of failure to feeds are because the bolt slid forward at some point and partially dislodged a round from the mag. I haven't had it happen as much with my Vudoo but it happened several times with my Bergara when I ran one.
Is it something that could be removed from the action if the user decides they didn't like it?
We can provide a rotating bolt assembly that will not engage this feature at owners request whenever they feel its needed to change. These bolt assemblies are a tool-less design like a Vudoo and can be field disassembled and swaped in seconds
 
My feeling is that you spent all this time and energy in design and tight tolerance to have the smoothest bolt movement in action and this “feature” rear bolt retention takes “away” that smoothness when slowly running the bolt becomes the focal point for negative comments.

Can this be offered for those that want this feature (and are ok with ever so slight bolt resistance) and for those that don’t want that rear bolt retention feature can have it without?

I would opt to forgo that feature (as it is designed today) if I can have it not on mine but it does not prevent allowing it configured for others that want it.
 
Its hard to explain how the bolt feels and I try to post videos with different folks running the action. But again, its a video. Im my own worst critic, I admit when comparing to actions like an Anchutz or a well broken in Vudoo/Rim-X. Luckily I can remove it or add it easily. We also been threatened a cease and desist for the bolt retention feature. Even though their is a patent to this exact feature already in place, that im the inventor of. (Patent # 12,031,789)

I've taken a lot of time perfecting this and satisfied where its at based off the numerous testing from pro shooters and regular shooters these past months.

Im excited to be days away from the first release of these actions. Yet still taking your suggestions in. Im confident itll proove itself. Thank You for those following and patiently waiting.
 
Last edited: