How much velocity is lost with an SBR?

Discuss rifles chambered for the 5.7x28mm; P90, PS90, and AR57.
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Litehiker
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Posts: 80
Joined: 16 Aug 2013, 18:25

How much velocity is lost with an SBR?

Post by Litehiker » 10 Aug 2017, 11:13

When I go to an SPB how much muzzle velocity will I lose with that lost 6 inches?


Q. Why are women such a bad judge of distance?
A. Because men have them convinced that this 8--------------------------------------<) is 6 inches. ;)

Eric B.

Buffman
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Re: How much velocity is lost with an SBR?

Post by Buffman » 10 Aug 2017, 18:14

Depends on the load.. AE TMJ loses about 100 fps

Litehiker
Junior Member
Posts: 80
Joined: 16 Aug 2013, 18:25

Re: How much velocity is lost with an SBR?

Post by Litehiker » 11 Aug 2017, 11:43

Thanks for the prompt reply Buffman.
I can live with a 100 FPS loss for a CQB weapon. I use FN ammo, which from testing I know is faster than Federal's American Eagle ammo.

And I also know that, even with 100 FPS slower velocity, it still has much more energy at 100 yards than the tiny ammo from the H7K MP7. Not that I'll ever even see an MP7 on my range.

Eric B.

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