Looking for anyone who has tuned a huntsman .25cal for more power. Looking for what was done. If so, what are your #'s; ft lbs and shot count. Reg or non regulated...
Thanks, Brian
Thanks, Brian
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who has tuned a .25 daystate huntsman for more power
- Thread starter Malsonb
- Start date
I am interested to see your responses. I'm no tuner, but I have owned a Huntsman (great rifle), so I'm generally familiar with it. My guess, you will find that it is not especially well adapted for high power tuning. You may need to change hammer springs and/or the hammer bushing. Since more spring power and transfer port capacity need to be kind of balanced, you may also need some machine work on the port. Since all of this demands more air, which is something the Huntsman does not have in great quantity, I expect if the power goal is reached, you may be disappointed in shot count. IMO, the Huntsman is a very good standard power rifle, and a great sub-12 fpe rifle, but maybe not the best candidate for high power tuning. But maybe we will hear from the folks who actually know what they are talking about.
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Brian, do you already own the gun? Or is this a gun you like a lot and want to purchase and tune up? If looking to buy, I personally would go another route, different gun with already capable power, perhaps power adjustable. If you already own the gun and from everything I have read, you may be able to squeeze a little more power out of it, but probably not much, shot count may suffer. I think I have read from others that the platform is more suited for .22 and .177. I had one in .22 and was very accurate at 30 yards and just gorgeous gun, I sold it on a whim, sometimes I wish I had kept it. Hopefully you can get better answers from more knowledgable folk.
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I own the gun. What I was looking at was a small increase. It actually gets close to 30 shots at 40ftlbs. If possible, I was thinking @50 ftlbs with close to 20 shots. Maybe regulate it fo consistent shots.
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The regulated versus non regulated do not seem to make huge differences and in my humble opinion is not designed as such, the wolverine r hp may be better suited for fpe higher. The Huntsman was designed to perform as it is and 40 ft lbs is not that bad.
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The gun is beautiful. My first pcp was a daystate harrier(1997). DH was a tack driver.I decided to go back to daystate. I was looking at trying slugs in it. I have some NSA 26gr that shoot ok. I think I need to up the fps some to get more accuracy out the slugs.
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The adjustment to try it is easy enough but the air cylinder is so small that I'm sure the shot count would suffer for the benefit gained. I have a Regal XL in 22 and bumped it up a little but there is a lot of difference in the two calibers, shot count wise. It is what it is but if your really interested PM me.
Jking
Jking
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Masonb,
I got your your PM and decided to share the procedure here in case anyone else has the same questions. The first thing to do is remove the stock and then you'll have to cock it and put it on safety. Next locate the hole just in front of the trigger guard.
More than likely it look just like this, just a hole. Next you'll need a long 3mm hex wrench, long enough to stick in the back of the safety switch housing and into the back of the hammer.
Once it's inserted into the hex screw on the back of the hammer you can rotate the hammer in the housing. Nothing is going to unscrew and cause any issue, it's just going to rotate the hammer. Rotate the hammer while your looking into the hole and you'll see a hex set screw come into view. For what ever reason I found that a 5/64" hex wrench fit this set screw the best.
Next loosen this set screw a quarter turn or so and keep a hold of that hex wrench. You'll have to keep the hex wrench in the set screw and firmly hold it in place and not let the hammer turn while your adjusting the other wrench stuck in the back of the hammer. I'm 99% sure that clock wise from the back will increase the hammer strike. I wouldn't go anymore than 1/8" of a turn at a time. Keep track of how much your adjusting, maybe with a mark on the back of the safety switch housing in relation to your hex wrench. After you make this minor adjustment snug up the set screw in the hole to keep your adjustment where you left it. You can then load a pellet and fire it across your chronograph to see what the speed change is. As you increase (in this case) the hammer strike you'll more than like have to increase your fill pressure some to keep your bell curve where you want it. Hope this is clearer than mud..
Jimmy
I got your your PM and decided to share the procedure here in case anyone else has the same questions. The first thing to do is remove the stock and then you'll have to cock it and put it on safety. Next locate the hole just in front of the trigger guard.
More than likely it look just like this, just a hole. Next you'll need a long 3mm hex wrench, long enough to stick in the back of the safety switch housing and into the back of the hammer.
Once it's inserted into the hex screw on the back of the hammer you can rotate the hammer in the housing. Nothing is going to unscrew and cause any issue, it's just going to rotate the hammer. Rotate the hammer while your looking into the hole and you'll see a hex set screw come into view. For what ever reason I found that a 5/64" hex wrench fit this set screw the best.
Next loosen this set screw a quarter turn or so and keep a hold of that hex wrench. You'll have to keep the hex wrench in the set screw and firmly hold it in place and not let the hammer turn while your adjusting the other wrench stuck in the back of the hammer. I'm 99% sure that clock wise from the back will increase the hammer strike. I wouldn't go anymore than 1/8" of a turn at a time. Keep track of how much your adjusting, maybe with a mark on the back of the safety switch housing in relation to your hex wrench. After you make this minor adjustment snug up the set screw in the hole to keep your adjustment where you left it. You can then load a pellet and fire it across your chronograph to see what the speed change is. As you increase (in this case) the hammer strike you'll more than like have to increase your fill pressure some to keep your bell curve where you want it. Hope this is clearer than mud..
Jimmy
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Jking, thanks for the write up, do you think this, well the opposite would work on the regulated version? Mine is putting out 25 ft/lb and I'd like to actually drop the power. Thanks.
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I don't know why it wouldn't work. It would be just like lowering the HS tension on any other gun with a regulator I would think. It probably wouldn't take much at all to lower it a bit either, again I wouldn't adjust it any more than an 1/8 turn without checking your new velocity.
jk
jk
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Thanks for the info Jimmy. I never knew that the HST could be adjusted via hex keys. I thought one would have to remove the hammer spring and start cutting or upgrade to a longer spring or stronger spring. +1
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Huma regulators actually offer a power plennum “xxl” for this : https://www.huma-air.com/Daystate-Huntsman-FAC-pressure-regulator read down in link.
Would love to try this out. Believe might need change to transfer port and spring. Very easily done though. Whats more cumbersome and reason I haven’t jumped on this in Revere in .25 yet is all the work of tuning the speed to beat accuracy..
I have a Beaumont and this guy said he could get 44ft lbs(up from 40 stock) with just spring adjustments.
Any suggestions, experience in this specific set up I’d love to hear.
By the way fx hybrids in 22 does well in the 40fb lbs version I’ve heard?
Would love to try this out. Believe might need change to transfer port and spring. Very easily done though. Whats more cumbersome and reason I haven’t jumped on this in Revere in .25 yet is all the work of tuning the speed to beat accuracy..
I have a Beaumont and this guy said he could get 44ft lbs(up from 40 stock) with just spring adjustments.
Any suggestions, experience in this specific set up I’d love to hear.
By the way fx hybrids in 22 does well in the 40fb lbs version I’ve heard?
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