Acme 535 Silent Dog Whistle - Adjustable Ultrasonic brand_-Sierra whatever the weather

whatever the weather

for handloaders building their own

so every primer seats to the same depth and the firing pin strikes it the same way each time

A sensible addition for anyone running a larger Swarovski scope from a tripod in the field

The exposed lead tip and tapered copper jacket give controlled

Acme 535 Silent Dog Whistle - Adjustable Ultrasonic brand_-Sierra whatever the weatherThe Acme 535 is the original ultrasonic gundog training whistle, made in Birmingham by J. Hudson & Co, the firm that invented the silent dog whistle. A screw piston mechanism lets you adjust it across a single variable frequency between 5,200 and 12,800Hz, so you can tune the pitch to suit your own dog and lock in a consistent recall note. To the dog the sound is loud and clear, carrying up to 1. 5km, yet it sits largely above human hearing, which is