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PTFE ammunition

781 Views 7 Replies 6 Participants Last post by  Pebble Shooter
I've not seen PTFE balls mentioned as practice ammo so here goes.

When choosing indoor ammo I think the most important consideration is finding something closely matching your outdoor ammo. This means technique developed indoors (like a good pouch release) should be transferable outdoors.

PTFE balls are available in a range of diameters - all the sizes of steel we shoot - meaning you can match your indoors and outdoors ammo exactly. PTFE is a particularly dense plastic (2.2 g/cm3). This means for a given size it has greater weight, not too light, unlike some other plastic practice ammo.

Downsides? Cost. About $2 each. Now, matching bands to PTFE ammo. An example:

A 9.5mm (3/8) PTFE ball weighs 0.99g
A 1/4" steel ball weighs 1.05g

Therefore band suggestions for shooting 1/4" steel apply the same.

To calculate the weight of a PTFE ball you can use these tools:
Volume of a sphere Calculator
Volume and Density to Mass Calculator


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Shooting indoors means red alert for anything that moves near or unexpectedly through the makeshift range, (wife, kids, pets) and for all objects that make a rather worrying "smashed" sound: one bad release, and it's a worst case scenario. :hmm:

One solution I yet need to try is to suspend an old thick bath towel with a small circle cut into the towel at your typical shooting height, and to stand a yard or two behind this towel, with a clear view of only your target placed at the backstop through the hole cut into the towel. If you do have a bad release, the ammo will bounce off the towel in front of you safely, but you will be able to hit the target visible through the hole if you're shooting correctly.

Ideally, the section where the hole in the towel is cut out should be reinforced by a layer of extra material, particularly the edges of the hole (anyone with sewing skills in your home?). Technically, this should significantly reduce the danger of stray ammo smashing stuff next to the backstop.

A picture says more than a thousand words:


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