Has anybody thought about the ballistic profile of a 22-250 slug adapted to a PCP? I'm thinking of a heavy .177 round similarly shaped to a 22-250 shot out at 1100fps (just below the speed of sound ).
Has anybody considered a slug equivalent to a 22-250?
- Thread starter Lwpdx
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Goodluck on that.
Getting a .177 to have similar ballistics as a 22-250 will be very unlikely.
Hell getting a 177 to have similar ballistics as a .17 HMR is goin to be very difficult.
Search on YouTube there is a guy who made .177 slugs gun. It's pretty sweet. Tofazforu might be his name
Getting a .177 to have similar ballistics as a 22-250 will be very unlikely.
Hell getting a 177 to have similar ballistics as a .17 HMR is goin to be very difficult.
Search on YouTube there is a guy who made .177 slugs gun. It's pretty sweet. Tofazforu might be his name
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I have a gun to 'play with" any thoughts on a .17 HMR barrel on an airgun (if one can source the ammo)???
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.172 is the bullet size you want . Molds are available from NOE . I prefer either .223 or .224 myself .
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With 1100 FPS and 40gr your sitting at 22RF area. So I think at 1400-1500 with even pressures at 4500# and a light bullet/pellet should be top of the ballistic scale for the time,
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A friend and I attempted this once, we bought a Corbin press and dies to make a HPBT lead projectile, we tried different lengths and weights. Part of the problem was the twist rate of the barrel which was too slow because it was designed for pellets rather than a longer bullet. Then we tried a different set of dies and a 9 twist .172 barrel, nope we couldn't figure it out and the experiment failed, basically we ran out of $ and patience.
But that same .172 barrel works great in a 17 Remington with 30 Golds!
But that same .172 barrel works great in a 17 Remington with 30 Golds!
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Those are some shinny slugs, ya just get done polishing those things? Thanks all for your input, it looks like many have looked into this possibility and some have made it work for them. I have much to learn, any suggestions on a book or website I can glean?
What I was getting at is using a .177 for its small diameter and a heavy slug to get the best down range velocity possible. tofazfou's 17MHAir is wicked cool, I want to see more information on that.
What I was getting at is using a .177 for its small diameter and a heavy slug to get the best down range velocity possible. tofazfou's 17MHAir is wicked cool, I want to see more information on that.
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Go to gateway to airguns gta forum and search either for his 17 hm air or look into talondor 257 tofazfou also has a blog site if you Google it you should be able to find it hope that helps for info
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Yep, it is Tofazfou, (Cedric) Fantastic results with his .17 Hmair.
Those are good looking bullets, however, the mold needs to be hotter. Far too many wrinkles in them.
Knife
Those are good looking bullets, however, the mold needs to be hotter. Far too many wrinkles in them.
Knife
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Yep, it is Tofazfou, (Cedric) Fantastic results with his .17 HmAir.
Those are good looking bullets, however, the mold needs to be hotter. Far too many wrinkles in them.
Noe has a very good .224 bullet mold that is basically a downsized 257420. Very accurate!
Knife
Those are good looking bullets, however, the mold needs to be hotter. Far too many wrinkles in them.
Noe has a very good .224 bullet mold that is basically a downsized 257420. Very accurate!
Knife
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I see the benefit in this caliber being. 223 or 224 of not having to buy bullets from no body...I don't find any fun spending $27 for a 100 slugs when you could buy with that money 9 pounds of lead n shoot God know how many bullets...I finish my talondor in .223 1-12 and have another barrel 1-14 both 30" long with a Doug valve...but have not been able to tested yet..
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Keep in mind that with air, the smaller the bore the harder it is to get big power. A 60fpe 25cal would likely only make about 30fpe if you put a .177 barrel and probe on it. You'll be trapped in a high pressure system as well. You'll probably never get that power on a sub 3000psi platform.
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This is my SPA M10 with LW 222rem barrel. 112FPE at 2900psi with barrel lenght of 24" using 50-61grain bullets.
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