28 inch barrel
Hi all,
I was wanting to know if anyone out there makes a 26 or 28 inch barrel for the 25 cal condor. I have a Talon Tuned 25 and it kicks major ass with a 24 inch barrel. I am curious if a longer barrel would give more velocity and power. I got 119 fpe yesterday on full fill 3000 psi and shot a 62 slug right through a 2×4 at 23 yards. It hit hard and went through like butter and hit hit the concrete wall behind and totally mushroomed flat chipping the concrete. I’m leaning towards buying the 308 setup but if I can get more power with a longer barrel I would be satisfied. Any info would be appreciated.
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Good stuff guys! Jerry my rifle is averaging 114 fpe to 119 fpe on full power. I don’t mind using a lot of air to get these numbers it’s worth it when using the 62’s. I don’t even shoot the 43 grainers anymore only when my tank is low. How far would those heavier slugs be accurate out to before I see a drop? What kind of energy do they have at 100 yards? Keep the info coming great stuff. I appreciate all you guys reaching out.
Gonzo,
I have been into this subject for a while but I keep running into problems I guess you could say. There is others threads on this subject floating around just have to find them. I know you can get a order of 30″ barrels from LW but its a 10 minimum. Woody from LW quoted me $145.00 each and that is blanks. Honestly that seemed like a good price for a 30″ blank, but I don’t need 8 other blanks. 😕 I have tried other custom barrel company’s that make quality barrels, but they can only provide a barrel groove diameter of .257. This groove diameter is to large because I am only wanting to shoot Jerry’s Surefire slugs.
Assman83,
Let me know once you get some results from your Lilja barrel very interested in the velocity increase.
wasnt walt in hawaii machining a lilja blank for someone? was that you, assman? cant remember…
Gonzo,
It’s always an estimate but when I look at the numbers, I take 119FPE with a 62gr slug and calculate 127 with the 71gr 7 ring and 131+FPE with the 88gr 9ring. These are just my estimates from other guns and it all depends on the details of your gun’s airflow. If your gun is delivering just the air required for the 6 rings, it might not gain as much as I expect with the 7’s but it will still gain. I’m expecting diminishing returns with the 9’s but the velocity will still be in a very useful airgun range.
Of course, while the 6 rings have a pretty good BC, the 7 and 9 ring slugs have a better one. That means that you can still shoot long range with these heavies. In fact, not only can you put them on target at let’s say 820fps at the muzzle with a 9 ring but that slug will be going a lot faster at 100 yards than a Kodiak style that started at 1000fps and it will drift a lot less with a crosswind. High BC is a great thing!
Thanks guys! I want to hear about those test results sounds exciting. Jerry I have your 62’s and they are awesome! What do you think the 7 or 9’s would get based on my stats from the 62’s?
Assuming all things equal, going from a 24 inch 119 FPE at 3.5 ms in the barrel, the 28 inch barrel would be 126.9 FPE with 3.9 ms in the barrel.
The extent of the velocity curve is starting to diminish (flatten).
This guy made me a 30″ and i believe is making a another member here one as well. As far as power I have another member machining the barrel and he was gonna due some testing.
I don’t know if you’re going to find a longer barrel blank but if you want more power, you might want to look at valves again. Ask RC about his valve, he’s cranking out serious power. You might want to try the heavier slugs too if you’re looking for maximum damage downrange.
Combining a max power valve with 9 rings would be your best bet IMHO. Back when we first tested the slugs, we used a gun that was running about as hot as yours is (within a few FPE) and it shot the 9 rings very accurately with one hole groups at 50 repeatable. Those 9 rings blew through 2×6’s at 100 yards like butter too!
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Gonzo,
Here’s a handy site to try out different BC and initial velocities for comparison of drop, windage etc…: http://www.handloads.com/calc/index.html.
I think all the slugs would be accurate out to 100 yards. Generally, if you can shoot good groups at 50, you’re OK further. HOWEVER, I have seen a slug (not one of the .25s, it was a commercial .32) that was good at 50 but went unstable before 100…
The .25 slugs have all been tested and shown to remain stable out to 100 plus yards, even from guns less powerful than yours. I expect the accuracy at that range to be up to you and your gun provided we deliver a quality slug… and we’ll continue to do our best in that regard!