EVOL Evol .30 w/27cc plenum ext., Reg setting?

[Pumacarl]

I was asked "What is your goal?" yesterday and had never really thought about it in that respect before. Having then thought about it, I try to tune my guns for highest power and accuracy, with a couple of magazines worth of shots. What I was doing a tinkerer/hobbyist is turning an original and accurate pellet shooting Evol hunting rifle into a longer range slug gun without the required plenum volume for my caliber. With the new plenum extension installed, coupled with my mods, it is now "almost " what the new HPS is, but lacking some performance and a lot of efficiency without having the balanced valve, barrel twist, adjustability, etc. With the new HPS versions of the Evol coming available that I can silhouette shoot out to 200+ yards easily, and because I have peaked the performance of my Evol as a hunting gun, I am going to be buying a HPS that is purpose built/engineered for the mid range shooting sport and keep the original Evol as my hunter instead of being used for both.

Very well stated, and I agree with your reasoning completely.

 

[Pumacarl]

I guess I may have been completely off of the node for the Zan's because they shoot awesome at 850fps and lousy (lousy is relative to hole in hole accuracy) at 870-880fps in my gun. I would think that if I could get them over 900fps they would probably shoot great again, but I'm going to pass on trying with this gun at this point.

 

[Airgun-hobbyist]

You have me wanting to buy a Tac 30 to send to you and set me up how you are, I can tune but am no machinist lol.

If memory serves, that Tac 30 has a shorter 15" barrel, so adding the bigger plenum with the given valving and hammer will probably be near perfect. It is a nice efficient short barreled pellet hunting rifle as it sits, but giving it more porting and hammer weight will yield minimal results while robbing the efficiency side of things with waisted air. If you are wanting slug hunting performance, with the added gain in efficiency too, then the new Evol HPS line is where it is at. Just a theory at this point, but I'll bet the new 30 Mini is going to be on par with the slightly longer Tac 30.

Tom's ports flow and are blended and curved pretty well, unlike the two cross drilled passages almost all other manufacturers put out. So porting and polishing didn't yield the 50+ fps gains that I get tinkering with other manufacturer's guns. Sure what I did amounted to a decent gain, but requires above average regulator pressures to push more air faster for heavy slugs, and at the valued expense of efficiency,. My rifle is essentially maxed out now and I will buy the new and more efficient Evol HPS already set up for slugs next; no tinkering needed, just tune for power and accuracy.

 

[Airgun-hobbyist]

I guess I may have been completely off of the node for the Zan's because they shoot awesome at 850fps and lousy (lousy is relative to hole in hole accuracy) at 870-880fps in my gun. I would think that if I could get them over 900fps they would probably shoot great again, but I'm going to pass on trying with this gun at this point.

I don't blame you. If they shoot good slower then you have got it dialed in, and there's no need to chase speed where efficiency is lost. The new HPS guns shoot them fast and accurate with efficiency, essentially pushing them like a slug.

 

[Pumacarl]

As a follow-up on this thread I decided that since I can't get more, or enough, usable gains to make a difference to my Paradigm, with the 27cc extension, I ordered the 12cc size to see if I could just get better efficiency. At this point, why not? I will start a new thread for that.

 

[Bladebum]

Something I'd like to throw in here, my brother and I both have an Evol .22 standard (15" barrel) and both shoot a multitude of slugs very well. I dont mean 50 yards, I mean 100+ yards...but his gun is noticeably more accurate consistently , even though we have the exact same barrels and gun. I think it just comes down to intricacies between each barrel, but something that drastically improved my consistent accuracy with slugs is this lube here. With a few drops spread around on a can of slugs, not only does it improve accuracy, flyers all but dissappear...and I don't even know if barrel cleaning is neccessary anymore. I cleaned the barrel after probably 800 slugs of all different brands and had zero lead chunks come out. It used to be around 200 slugs and I needed to clean and would pull tons of lead shavings out. From what I've read from some of you here, if your having trouble with slug fouling give this stuff a try.

 

[hameditor]

Something I'd like to throw in here, my brother and I both have an Evol .22 standard (15" barrel) and both shoot a multitude of slugs very well. I dont mean 50 yards, I mean 100+ yards...but his gun is noticeably more accurate consistently , even though we have the exact same barrels and gun. I think it just comes down to intricacies between each barrel, but something that drastically improved my consistent accuracy with slugs is this lube here. With a few drops spread around on a can of slugs, not only does it improve accuracy, flyers all but dissappear...and I don't even know if barrel cleaning is neccessary anymore. I cleaned the barrel after probably 800 slugs of all different brands and had zero lead chunks come out. It used to be around 200 slugs and I needed to clean and would pull tons of lead shavings out. From what I've read from some of you here, if your having trouble with slug fouling give this stuff a try. View attachment 5112

Interesting, thanks for sharing. Has anyone else tried this particular product?

 

[Pumacarl]

I will give that a try too. Hopefully the FX Halos and the new Zan slugs will be out soon to try against the FX Hybrids, which so far are most accurate, but super foulers. Either way, the woodchucks are going to have a hard year.

 

[Bladebum]

I will give that a try too. Hopefully the FX Halos and the new Zan slugs will be out soon to try against the FX Hybrids, which so far are most accurate, but super foulers. Either way, the woodchucks are going to have a hard year.

The RMR 22 grain hybrids(which are the fx hybrids) are what I'm shooting right now. Reg around 2200, speed at 900, accuracy is incredible. Sub moa at 100 all day. I washed them (because they come hideously dirty) and lubed with the spartan oil and have no fouling or flyers anymore.

 

[Pumacarl]

Yeah, they are freakishly accurate compared to any other slug I have tried, just dirty. I was going to buy a boatload of them from RMR but then I heard the Halos are coming (at a decent price) and the Zan's, so now I have to try those before I commit to any large buy. It would be pretty much impossible to shoot better out to 100y, but at 150y things might be different.

 

[Bladebum]

Yeah, they are freakishly accurate compared to any other slug I have tried, just dirty. I was going to buy a boatload of them from RMR but then I heard the Halos are coming (at a decent price) and the Zan's, so now I have to try those before I commit to any large buy. It would be pretty much impossible to shoot better out to 100y, but at 150y things might be different.

I am also curious to see how those halos perform, not familiar with the new ZANs?

Yesterday I took the hybrids out to 140 yards, shot off a softbag resting on a gate, would have been 10 dead squirrels or pigeons. I almost never shoot that far but its nice to know they are stable. Most my shots are under 100 , the wind is really why I go to slugs.

Didn't mean to hijack your thread away from the plenums, just figured I'd throw out my findings with the Evol shooting slugs since that's where plenums are going to help.

 

[Pumacarl]

It's all good, especially when it is about shooting the guns and ammo we are talking about. It seems to me that people haven't been as technical reporting on performance lately. I like hearing about how people's range days go, shooting what, with what, at what pressure, at what target at what distance in what conditions, etc., paying attention pays dividends.

 

[pan60]

Interesting, thanks for sharing. Has anyone else tried this particular product?

sounds like the boss needs to do some research.