FX New .22 M3 Redesign help

[Flyer1944]

I just received a new Impact M3 and am looking for a good starting point to set up the Gun to shoot the monster redesign pellets for accuracy at 100yrds .Right know I have It tuned for the 18.1 grain at any ware from 916 down to the low 800 hundreds ex spread 4.5 Any help with set up would be appreciated Thanks

 

[Vetmx]

If you want help with a starting point, you need to post your barrel length. Starting points for all projectiles is way different with 500, 600 and 700mm barrels.

 

[Ranchibi]

To add to the above reply, also indicate approximate speeds you'd like the projectiles to fly.

 

[Flyer1944]

Sorry about the omissions my barrel is 700mm and I believe some ware I heard a good speed must be in the 900 fps range for the redesigns to do any good at 100 yards.

 

[dens228]

My .22 Redesign's in 25 grain pellets have shot great between 880 and 925 fps. I tend to settle for around 910-915.

 

[Trucker3573]

What are your regs set at currently?

 

[Flyer1944]

My 1st reg is set at 120 and the second at 75 that’s the settings when I received it from the dealer. I haven’t changed it yet.

 

[dens228]

My 1st reg is set at 120 and the second at 75 that’s the settings when I received it from the dealer. I haven’t changed it yet.

Are your shots accurate? What speeds are they accurate? I'm assuming you list the range of speeds based on what your macro wheel is set at.
If it's accurate and you're getting the speeds you want what is it you're looking to achieve?

 

[dens228]

Here you go, I'm shooting heavier Redesigns in .22, the 25 grain pellets out of a 600 mm barrel.
Second reg is 108, micro is right at 4, valve is turned in to 9.7 mm's.
I got there by wanting between 910-920 fps. Started at a lower reg and turned up the hammer tension as I chrono'd it. If the fps stopped increasing before I reached my target speed I upped the reg and started over. My goal with the hammer was to be about 10 fps above where I wanted to be. I then closed the valve a tiny bit at a time until my speed dropped a bit and my groups tightened.
I can tell you I was very happy with pellet groups without having to touch the valve which was originally on the 4th line. Once I tuned for slugs a tiny bit of additional closing of the valve made a big difference in tightening up the groups.
There are some very good video's on YT as well as posts on this site that explain it much better than I just did.

 

[Flyer1944]

Thanks everyone for your help I haven’t been able to shoot at any distance as of yet because of the weather and wind in NY but I am hoping to get out sometime after Christmas and try some of your ideas

 

[carlos_hathcock]

My 700mm M3 likes them at 970 FPS best. Very satisfied at 70 yards or less but they open up a bit at 100. Wind, velocity decay, or both?
Note that the 50 yard group shown is typical while the 100 yard is more like best ever & not consistently repeatable.

 

[dens228]

My 700mm M3 likes them at 970 FPS best. Very satisfied at 70 yards or less but they open up a bit at 100. Wind, velocity decay, or both?
Note that the 50 yard group shown is typical while the 100 yard is more like best ever & not consistently repeatable.

Which weight RD's are you using? I wonder if the longer barrel helps stabilize better at higher FPS. Do you feel you'd get a tighter group at a higher or lower FPS at 100 yards or just that pellets themselves tend to lose stability much beyond 70-80 yards? Looking at my profiles in Strelok my slug profile retains it's energy much better at distance, I assume they would but was surprised by the huge difference as the distance got longer.

 

[carlos_hathcock]

Which weight RD's are you using? I wonder if the longer barrel helps stabilize better at higher FPS. Do you feel you'd get a tighter group at a higher or lower FPS at 100 yards or just that pellets themselves tend to lose stability much beyond 70-80 yards? Looking at my profiles in Strelok my slug profile retains it's energy much better at distance, I assume they would but was surprised by the huge difference as the distance got longer.

I only know of the 25.39 gr. JSB MRD in 22 cal. Also using the standard 1:24 twist STX. As for a different velocity for 100 yards, this is the best I’ve found and I’ve tried 870 to 1020. I’m guessing it’s a wind issue since I’ve had a few decent groups at 100. Interestingly StrelokPro shows a similar weight slug starting off 15 FPS faster to have a 70 FPS advantage at 100. Great pellet this MRD & my go to for close in work.

 

[dens228]

I'm using the same barrel but in 600 mm. The 25.39 JSB's are 916 at the muzzle, 651 at 100 yards per the app,
The 22 grain Hybrids are 949 at the muzzle, 926 at 100 yards.

I'm very happy with the performance, figured the slugs would retain more energy at distance, but was surprised by how much.
I'm just interested in the speed you are using for your pellets. It appears it improves your shooting out to 100 yards.