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Author Topic: New .17HMR inbound  (Read 529 times)

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Offline wganz

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New .17HMR inbound
« on: August 22, 2012, 01:05:17 PM »
Just ordered a .17HMR from the local toy store.
I've seen tests where they have shortened and then chronographed loads. The end result was that there was only 50fps difference between 17" and 22".
Has anyone trimmed their .17 HMR and can give some input on accuracy / ballistics / convenience?


Do appreciate it.
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Offline tacklebury

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Re: New .17HMR inbound
« Reply #1 on: August 23, 2012, 12:40:47 PM »
Most of the tests show closer to 25 fps to 100 fps per inch depending on caliber. 
Here's one interesting article: http://www.anzioironworks.com/barrel_length_vs_fps.htm
These guys have done testing on lots of calibers too:  http://www.ballisticsbytheinch.com/calibers.html
Unfortunately, it doesn't appear that they have with the 17 HMR yet.
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Tacklebury --}>>>>>    Multi-Barrel: .223 Superlite, 7mm-08 22", .30-40 Krag M158, .357 Maximum 16-1/4 HB, .45 Colt, .45-70 22" irons, 32" .45-70 Peeps, 12 Ga. 3-1/2 w/ Chokes, .410 Smooth slugger, .45 Cal Muzzy, .50 Cal Muzzy, .58 Cal Muzzy

also classics: M903 9-shot Target .22 Revolver, 1926 .410 Single, 1915 38 S&W Break top Revolver and 7-shot H&R Trapper .22 6" bbl.

Offline quickdtoo

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Re: New .17HMR inbound
« Reply #2 on: August 23, 2012, 01:17:17 PM »
As the OP mentioned, Bullberry tested 17hmr barrel lengths, any legal rifle barrel length will not loose much velocity over a full length factory barrel.

Tim

http://www.bullberry.com/HMRdata.html
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Offline tacklebury

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Re: New .17HMR inbound
« Reply #3 on: August 23, 2012, 02:37:48 PM »
Good to know Tim, I added that one to my links of barrel length mod data.  ;)
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Tacklebury --}>>>>>    Multi-Barrel: .223 Superlite, 7mm-08 22", .30-40 Krag M158, .357 Maximum 16-1/4 HB, .45 Colt, .45-70 22" irons, 32" .45-70 Peeps, 12 Ga. 3-1/2 w/ Chokes, .410 Smooth slugger, .45 Cal Muzzy, .50 Cal Muzzy, .58 Cal Muzzy

also classics: M903 9-shot Target .22 Revolver, 1926 .410 Single, 1915 38 S&W Break top Revolver and 7-shot H&R Trapper .22 6" bbl.

Offline wganz

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Re: New .17HMR inbound
« Reply #4 on: September 02, 2012, 04:39:31 PM »
Had to cancel this order since it appears that they are not available at the moment. :-[
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