TargetTalk

A forum to talk about Olympic style shooting, rifle or pistol, 10 meters to 50 meters, and whatever is in between. Hosted by Pilkguns.com
It is currently Sat Jan 20, 2018 3:40 am

All times are UTC - 6 hours [ DST ]


Forum rules


If you wish to make a donation to this forum's operation , it would be greatly appreciated.
https://www.paypal.com/paypalme/targettalk?yours=true



Post new topic Reply to topic  [ 29 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: Fri Sep 02, 2016 10:22 am 
Offline
User avatar

Joined: Fri Jun 10, 2016 11:04 am
Posts: 413
Location: Montreal, Québec, Canada
GOVTMODEL wrote:
I don't know if the CIP system has more than one method of measuring pressure and velocity for .22 rimfire ammunition. SAAMI has one standard, so there isn't a reliable method of comparing velocity from various pistols, because there isn't a standard method for comparison.


The standard is to test the behaviour and performance of the ammunition under identical test environments.

If you want to know the performance behaviour of ammunition in a given pistol, you need to write up the standard requirements for the pistol (to make sure the pistol remains within acceptable tolerances for all tests) and test all the different ammunition through it.

Perhaps it's possible to accurately determine velocity by calculation based on barrel length.

_________________
- Smith & Wesson SW22 Victory
- FAS SP607


Top
 Profile  
 
PostPosted: Fri Sep 02, 2016 10:26 am 
Offline

Joined: Mon Mar 01, 2004 12:49 pm
Posts: 5263
Location: Ruislip, UK
SlartyBartFast wrote:
Perhaps it's possible to accurately determine velocity by calculation based on barrel length.

I would have thought that was unlikely as different powders have different burning speeds.


Top
 Profile  
 
PostPosted: Fri Sep 02, 2016 11:35 am 
Offline
User avatar

Joined: Fri Jun 10, 2016 11:04 am
Posts: 413
Location: Montreal, Québec, Canada
David Levene wrote:
SlartyBartFast wrote:
Perhaps it's possible to accurately determine velocity by calculation based on barrel length.

I would have thought that was unlikely as different powders have different burning speeds.


Good point. So, that would mean needing to test each ammunition in each barrel length.

Sorry, but this is at the limit of my knowledge. Don't have access to the test document referenced from the computer I'm on right now. So I can't really make any more constructive comment.

_________________
- Smith & Wesson SW22 Victory
- FAS SP607


Top
 Profile  
 
PostPosted: Fri Sep 02, 2016 12:47 pm 
Offline

Joined: Sat Sep 04, 2004 6:04 pm
Posts: 1509
Location: Massachusetts
If you are allowed to shoot lighter bullets at reduced velocity compared to a normal 40 grain .22 long rifle round, I'm sure people shooting rapid fire at the Olympic level have ammo that just safely meets the minimum requirements. Whether it's specifically tailored for rapid fire by the manufacturer or not, I don't know. I certainly wouldn't be surprised if Eley has a round specifically designed for rapid fire.


Top
 Profile  
 
PostPosted: Fri Sep 02, 2016 12:57 pm 
Offline
User avatar

Joined: Fri Jun 10, 2016 11:04 am
Posts: 413
Location: Montreal, Québec, Canada
Gwhite wrote:
If you are allowed to shoot lighter bullets at reduced velocity compared to a normal 40 grain .22 long rifle round, I'm sure people shooting rapid fire at the Olympic level have ammo that just safely meets the minimum requirements. Whether it's specifically tailored for rapid fire by the manufacturer or not, I don't know. I certainly wouldn't be surprised if Eley has a round specifically designed for rapid fire.


The rule is 39 grain and 250 m/s minimum.

And j-team reported Lapua Pistol King clocked at 256-257m/s.

I'm sure the match pistol ammunition from all manufacturers is designed to meet the minimums using all the standard pistols.

_________________
- Smith & Wesson SW22 Victory
- FAS SP607


Top
 Profile  
 
PostPosted: Thu Sep 08, 2016 6:36 pm 
Offline

Joined: Tue Dec 16, 2008 8:36 am
Posts: 102
Location: Philippines
Hi. A bit off but can anyone please share a picture of a Pardini shot group done via machine rest? I have seen Walthers and MG groups but never from Pardini .22's and .32's

Thanks


Top
 Profile  
 
PostPosted: Thu Sep 08, 2016 7:29 pm 
Offline

Joined: Wed Jan 05, 2005 11:07 am
Posts: 233
Location: Mineola, TX
I got less than 1/2 inch with 10 shots at 50 yards with Aguila Rifle Match.


Top
 Profile  
 
PostPosted: Thu Sep 08, 2016 7:43 pm 
Offline

Joined: Tue Oct 13, 2009 6:07 pm
Posts: 111
Location: Prescott, AZ
ghillieman wrote:
I got less than 1/2 inch with 10 shots at 50 yards with Aguila Rifle Match.

Impressive!! At 50 yards, my S&W 41 holds just inside the x-ring shooting from sand bags using RWS R50. I'd like to see how it does in a Ransom Rest. It's always nice to know that the errant (and humbling) shot is technique, not the gun/ammo combination.

Dennis


Top
 Profile  
 
PostPosted: Fri Dec 22, 2017 7:54 am 
Offline

Joined: Tue Aug 19, 2008 7:27 am
Posts: 460
Location: Old Europe
If I may ask one small additional question: does the assembled Pardini HPO with the .32 ACP conversion unit (7,65mm Browning) still fit inside the ISSF measurement box? Would anybody know or maybe even have tested?

Thank you,
Alexander


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 29 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group