Has anyone tried UK made Mako Slug?

Good morning all. I was curious if anyone has tried using Mako slugs. I saw the slugs being used and talked about on Ponty’s Pest Control channel. 


The slugs are designed for non-fac rated guns. I know in use we can have what we want but it would be interesting to see how they perform above but below the 20 ft/lb range. I might order some and have them sent to the Netherlands and I’ll bring them back with me. I’m October. 


https://www.precision-ballistics.co.uk/products





 
I've been shooting the 10.5gr. .177s out of my 17fpe HW100BP-K with great success. I was in Montana last month shooting ground squirrels with the longest kill shot being 73 yards. They buck the wind quite well and make a very "satisfying" pop upon impact. I shot 250 of the 300 I ordered and the accuracy hasn't fallen off yet from lead fouling.

The gun has a choked L/W barrel.

Geoff at Precision Ballistics is great at answering emails and my order arrived in less than a week.