smg762 said:

what would be the purpous....it wont defeat a IFV or similar vehicles....what would they target with this

Besides that 14.5 AP can penetrate Soviet era AFV including IFVs the rifle is most likely for long range anti field fortifications and position and anti personal work.

taschoene said:

And I wouldn't rule out these being effective against BTRs or even side armor of BMDs and BMPs.

14,5 mm is.
A BMP might shrug off a few hits over the frontal arc but against flanking shots and well aimed shots against weak areas the old Soviet IFV and APC are vulnurable.
To be really protected against 14,5 it requires STANAG 4569 level K4 which is pretty substancial. Few pre '90 AFV have this protection level or better all round and everywhere.

Supply trucks. Helicopters on the ground. Ammo and fuel depots. Lots of soft targets that take a bigger than average cartridge to damage/destroy at longer ranges.

smg762 said:

what would be the purpous....it wont defeat a IFV or similar vehicles....what would they target with this

Basically everything else; much of Ukraines tactics have been focusing on destroying of degrading long supply convoys of fuel trucks, artillery, and air defense vehicles. All of which could be targeted with a 14.5. A sniper could hide within ~1k of the a major road, and discretely damage / destroy high priority vehicles. 

Frankly this conflict may launch a resurgence in interest in the Anti Material rifle for defensive military use. 

In addition to Anti Material, a shocking  number of Russian Generals and officers have been killed, including at least one that was killed by a sniper at long range. Rumor is this kill was from 1.5km - emphasis on Rumor.

https://www.thedefensepost.com/2022/03/04/ukrainian-sniper-russian-general/

https://archive.ph/7wSUC

A rare video indeed: UA Tank killing a RU BMP in urban combat; one of the few tank videos of the war. Its a fantastic shot, taken through a blown up building.

Twitter

BlueSauron? on Twitter

Footage of an Ukrainian tank of the 4th Rapid Reaction Brigade destroying a Russian/LPR BMP during the battles in L... https://t.co/F8bOsBrL7U

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Azov employing hand grenades in urban combat at the end of the video; another rare scene as you dont see that many hand grenade fights. 

YouTube

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A look at the various Savage brand rifles used in Ukraine:

YouTube

Savage Rifles in Ukraine

The ongoing war in Ukraine has seen all sorts of small arms pop up. Many from military stores, some old - some new and some that were previously civilian-own...

First person view of Russian BTR firing AC and surviving RPG hit:

https://www.reddit.com/r/CombatFootage/comments/u6dfnl/russian_marines_btr_was_hit_by_a_rpg_and_fought/

RU BMP takes out UA T72 with a vehicle mounted ATGM:

https://www.reddit.com/r/CombatFootage/comments/u6l5h1/the_russian_crew_of_the_bmp_knocked_out_a/

New RU offensive has begun, in terrain better suited to Artillery and Armor:

https://www.thedrive.com/the-war-zone/russias-big-new-offensive-in-eastern-ukraine-has-begun

https://english.nv.ua/nation/what-s-in-the-latest-us-military-bundle-for-ukraine-50234901.html

Incredible image captured of a shell bursting near a RU soldier, miliseconds before the shrapnel hits: