File:Comparative image 7.62NATO 5.56NATO and 4.5x26MKR cartridges.jpg

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Comparative_image_7.62NATO_5.56NATO_and_4.5x26MKR_cartridges.jpg (392 × 254 pixels, file size: 13 KB, MIME type: image/jpeg)

Summary

Media data and Non-free use rationale
Description	A rare black and white image showing an experimental rimfire cartridge of swedish design, the 4.5x26MKR, side by side with common military cartridges 7.62x51NATO and 5.56x45NATO on millimetre squared graph paper. The MKR bullet has extra long curving ogive and marked boat tail to maximise its ballistic coefficient which would otherwise be much lower for a bullet of its weight due to its low sectional density.
Author or copyright owner	Without doubt the defunct Swedish Interdynamics Corporation as no prototypes were sold off.
Source (WP:NFCC#4)	Original publication: Unknown technical book, itself reproducing poor images from press releases by Swedish Interdynamics Corporation. Immediate source: https://strzelecka.net/viewtopic.php?f=2&t=1581&start=0
Date of publication	Early 1980s
Use in article (WP:NFCC#7)	4.5×26mm MKR
Purpose of use in article (WP:NFCC#8)	It is the only image I know of which effectively shows the unusual design of the MKR cartridge, particularly the marked boat tail as well as comparing to common military cartridges of the 1980s.
Not replaceable with free media because (WP:NFCC#1)	I have seen no similar photo showing the boat tail design of the MKR bullet. There are less than half a dozen images of the MKR ammunition out there, all grainy black and white.
Minimal use (WP:NFCC#3)	It only really pertains to the article on the unusual 4.5x26MKR project.
Respect for commercial opportunities (WP:NFCC#2)	The MKR was a military/commercial non-success and never advanced beyond prototypes. A few grainy black and white images of unicorn-rarity are extant, this being one of them.
Other information	no
Fair useFair use of copyrighted material in the context of 4.5×26mm MKR//en.wikipedia.org/wiki/File:Comparative_image_7.62NATO_5.56NATO_and_4.5x26MKR_cartridges.jpgtrue

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:01, 29 October 2019		392 × 254 (13 KB)	DatBot (talk \| contribs)	Reduce size of non-free image (BOT - disable)
	03:22, 28 October 2019	No thumbnail	424 × 275 (29 KB)	Petlif (talk \| contribs)	Uploading a non-free file using File Upload Wizard

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4.5×26mm MKR