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Definitely cheaper than buying local. Cost me US$56 per magazine landed in the country for an order of 4x mags which was the max I could get out of the USA keeping under the US$100 invoice price...

I had a similar issue with my 22.250 where the mags wouldn't take more than 3 rounds. I had imported 4 mags from the USA and none of them would take more than 3 rounds without tilting the follower...