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Couple of Questions Please....

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02 September 2005, 15:22
.22 HORNET
Couple of Questions Please....
First, I want to purchase a torque wrench in "inch lbs" but can't find one. I searched Midway, MidSouth, Cabela's and even ebay but none came up in the search. Where can I get one?

Secondly, does rate of twist effect velocity any? Example, if a particular load book says 3000fps using a 24" barrel with a 1:14 twist, would there be much/any difference if my barrel was a 22" with a 1:12 twist? Thanks for your help!
02 September 2005, 15:59
Hairtrigger
This may be what your looking for
Sinclair is a great company
http://www.sinclairintl.com/cgi-bin/category.cgi?catego...m=150-100&type=store


I am one gun away from being happy
02 September 2005, 18:16
vapodog
quote:
does rate of twist effect velocity any? Example, if a particular load book says 3000fps using a 24" barrel with a 1:14 twist, would there be much/any difference if my barrel was a 22" with a 1:12 twist?



Velocity is affected by barrel length but not as much as was thought years ago.....there's some good formulas but roughly 25'/sec per inch is a good rule of thumb. Your 22" barrel will shoot roughly 50'/sec slower than a 24" barrel

About twist rate.Since you put less rotational energy into spinning the bullet with a 1:14 twist than you do with a 1:12 twist it's reasonable to expect that one can achieve a bit more velocity with the 1:14 twist and I believe some factory barrels are made with this in mind. Weatherby .270 are 1:12 twist to help achieve velocity increases.

In fact the velocity gains are theoretically true but in my experience not large at all. As a matter of fact I've not seen this happen. If it really happens it's miniscule and a very poor reason to choose twist rate


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02 September 2005, 18:31
.22 HORNET
Thanks for the replies.
Hairtrigger, that is exactly what I'm looking for thanks!

Vapodog, that was a good explanation. Thanks a lot!
02 September 2005, 18:34
.22 HORNET
Hairtrigger, where are you in Ohio?
02 September 2005, 23:49
Doc
.22 Hornet,

Where are you? I live/work in Butler CO.


Ted Kennedy's car has killed more people than my guns
03 September 2005, 01:01
CDH
quote:
Originally posted by vapodog:

In fact the velocity gains are theoretically true but in my experience not large at all. As a matter of fact I've not seen this happen. If it really happens it's miniscule and a very poor reason to choose twist rate


I'll venture that since the rotational energy is maybe 2% of the total energy imparted on the bullet during it's trip down the barrel, any change in twist rate is a fraction of that 2% and therefore less than the shot to shot variation.


Believe nothing, no matter where you read it, or who said it, unless it agrees with your own reason and your own common sense.
03 September 2005, 08:26
.22 HORNET
Hi Doc, I live in the subdivision called Dutchland Woods, just off Yankee Road, about a mile from the RT 129 / I-75 exit. I moved here in March from Adams County. wave

quote:
Originally posted by Doc:
.22 Hornet,

Where are you? I live/work in Butler CO.

03 September 2005, 08:29
Doc
Wow. You live about 10 minutes from me. I live in Monroe off HWY 63. Most folks around here know about Monroe.

It's where the HUSTLER store is. eek2


Ted Kennedy's car has killed more people than my guns
03 September 2005, 10:32
STINGER
shucks even i know about monroe. they have the best cb radio shoppe in the u.s. . i like those guys.

if you ever need a radio fixed or tweaked they are the folks to see. good work at decent prices.


PLEASE EXCUSE CAPS, HANDICAPPED TYPIST.

"THE" THREAD KILLER

IT'S OK......I'VE STARTED UP MY MEDS AGAIN. THEY SHOULD TAKE EFFECT IN ABOUT A WEEK. (STACI-2006)

HAPPY TRAILS

HANDLOADS ARE LIKE UNDERWEAR....BE CAREFUL WHO YOU SWAP WITH.

BILL
04 September 2005, 08:59
.22 HORNET
Well hi neighbor! I know exactly where Monroe is. Been there many, many times. Do you coyote hunt?

quote:
Originally posted by Doc:
Wow. You live about 10 minutes from me. I live in Monroe off HWY 63. Most folks around here know about Monroe.

It's where the HUSTLER store is. eek2