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  #11  
Old 09-13-2014, 10:42 PM
Hog Patrol Hog Patrol is offline
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My $.02: I put a Shilen featherweight on my Model 7 action & cut it to 18 inches. 20 grain pills can run 4000, 25 grain pills at 3800. Accuracy @100 is 1/2 inch. I doubt you'll get much more velocity out of anything longer than 22". A 100 yd. bench gun 17 fireball at longer than 24, IMHO is asking for vertical string problems. That powder is long gone burned in about 12 inches.

Last edited by Hog Patrol; 09-13-2014 at 10:44 PM.
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  #12  
Old 09-16-2014, 02:46 AM
Buster Hindend Buster Hindend is offline
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Thanks for all of the replies
You've really helped me out


Brad
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  #13  
Old 09-16-2014, 03:33 PM
Ackman Ackman is offline
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This cartridge only burns about 19gr powder and 22-23" of barrel is plenty. A longer barrel won't give much if anything more. It's not loud enough to worry about getting the muzzle blast out further away from you. There's no recoil/muzzle jump so the barrel doesn't have to be a big heavy thing. I've had the MIV on Rem and Sako actions. With the small Sako you can have a varmint or light varmint weight barrel and the gun will shoot beautifully off bags yet still handle comfortably in/out of a truck or carrying.
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  #14  
Old 09-18-2014, 01:11 AM
BoonDoc BoonDoc is offline
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Here are my results for what it's worth. I have both a Remington model 7 predator (22" barrel) and a 700 with a 24" barrel. Using 25 gr Hornady HP and I believe 18gr of H322 I get 3850 fps from the 24" barrel and 3750 from the 22" barrel. So for me 2" of barrel length is worth 100 fps. I believe this would vary by the particular barrel to some extent.

Brad
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  #15  
Old 09-18-2014, 02:25 AM
Ackman Ackman is offline
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Quote:
Originally Posted by BoonDoc View Post
Here are my results for what it's worth. I have both a Remington model 7 predator (22" barrel) and a 700 with a 24" barrel. Using 25 gr Hornady HP and I believe 18gr of H322 I get 3850 fps from the 24" barrel and 3750 from the 22" barrel. So for me 2" of barrel length is worth 100 fps. I believe this would vary by the particular barrel to some extent.

Brad
It's not the difference in barrel length, 2" won't change velocity by 100fps with that cartridge. And at that length I don't think it would change anything with the small 17FB case. It's the difference in those 2 barrels. There can be 100fps difference between barrels of identical length. For instance, I have 3 - 24" barrels all chambered with the same 223AI reamer....with the same 40gr load the best barrel is 150 and 200 fps faster than the two slower ones.
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  #16  
Old 09-18-2014, 10:05 AM
Bad Wolf Bad Wolf is offline
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Quote:
Originally Posted by Chuck Miller View Post
As long as the blank will allow, especially for high qty targets. Nice to go back and lop off a couple inches and extend the life of one of those overpriced pieces of pipe. As far as velocity gained or lost 100-200fps doesn't mean squat in a Sagerat patch. I built my first 17mk4 at 27". That was the longest the blank would allow. After 2600 and a loss of accuracy I cut it down to 24" and after another 1000 it's still going strong.
Have I got this right that, after only 2,600 rounds, your Mk4 had to be re-chambered ? if so, doesn't that seems a tad low in round count ? More like 17 Rem ?

Just curious as I have 17 Fireball and was hoping for a bit more in terms of barrel life.

Last edited by Bad Wolf; 09-18-2014 at 12:47 PM.
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  #17  
Old 09-18-2014, 01:58 PM
Chuck Miller Chuck Miller is offline
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Default 17mk4

As for the barrel life on my rifle I let the groups determine when that happens. That 2600 rounds was spent in PD patches, I've seen some that get more and some less. Barrels are consumables, when they are worn out they let you know. On mine the throat had washed out so it was an easy fix to extend the life of the barrel.

Last edited by Chuck Miller; 09-18-2014 at 02:16 PM.
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  #18  
Old 09-18-2014, 02:07 PM
df06 df06 is offline
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Default Barrel 17FB

I have a 24" sporter and a 26" heavy barrel custom

Both work well and are very accurate
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  #19  
Old 09-20-2014, 07:21 PM
BoonDoc BoonDoc is offline
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Quote:
Originally Posted by Ackman View Post
It's not the difference in barrel length, 2" won't change velocity by 100fps with that cartridge. And at that length I don't think it would change anything with the small 17FB case. It's the difference in those 2 barrels. There can be 100fps difference between barrels of identical length. For instance, I have 3 - 24" barrels all chambered with the same 223AI reamer....with the same 40gr load the best barrel is 150 and 200 fps faster than the two slower ones.
This may be true, but essentially impossible to prove whether those barrels are "close" to identical or not. That's why comparing everyone's velocity numbers is somewhat pointless. No two barrels will ever be identical. I posted the results in my guns. I did not make a blanket statement about the velocity loss between ALL 24" and 22" barrels. Anyone can speculate what causes the difference in velocity, but no one truly "knows".

If I had a 1000 22" barrels and 1000 24" barrels and compared the average velocities I may be "close" to making an apples to apples comparison. I don't have that access as I'm sure no one here likely does unless a barrel manufacturer themselves do so such a study.

From what I have read in different articles is on AVERAGE for the AVERAGE barrel, 1" of barrel loss account for about 25-50 fps of velocity loss. Whether anyone believes that or not is up to them. I'm sure this also varies by the cartridge. It approximates what I have found in MY rifles only. So take it with a grain of salt I suppose. Like I stated previously this is all just conjecture anyways.
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  #20  
Old 10-12-2014, 11:00 PM
SShooterZ SShooterZ is offline
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Pretty sure mine is a 26" but I need to check again.

Shilen select 9 twist that gives me 3800 FPS with H335.
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