18mm ply backstop

[Nobby91]

Hi all so i made a pellet stop box the other day and bit a few pellets into it. The back is made out of 18mm ply. So i shot my hw95 into it, all pellets caught lovley same for my hw80 and my bsa ultra. Springers are .177 and ultra is .22. All pellets caught in wood no issues. I have slabs behind just incase. So today i get my brocock commander back from being repaired and he upped power to 11fpe on the dod as she was slightly low. Anyways went to re-zero it put first shot down range couldent see where it hit so went to have a closer look walked to 20mtrs to find a hole clean through the board. The gun is a .177 and shooting bisley magnums. Does this seem abit much power to you guys. Should i go back and get him to test fpe again?

 

[Firewalker]

If you are over the pond and only allowed 12fpe than yes.

Here in the states, I would be sorely disappointed if it it didn't go through that ply.

 

[Nobby91]

Yehh im over that little puddle where were restricted by how much air we can breath freely a day without being taxed lol

 

[Firewalker]

We have .72 cal airguns. You may want to come over and visit...

 

[Nobby91]

Im going to be applying for my firearm cert soon so i will have all i need.

 

[iAMzehTOASTY1]

Yea that's a little over

 

[boucheed]

Sorry to sound silly what is 18mm ply? are you saying a type of cloth curtain?

 

[Hateful McNasty]

Sorry to sound silly what is 18mm ply? are you saying a type of cloth curtain?

18mm is .709 inch. .75" is 3/4

But Then I did learn fractions from a guy who lost parts of his fingers in a lawn mower accident... so

 

[beerthief]

3/4 inch ply is a lot to go through for a .177 or .22

 

[AlanMcD]

I agree with beerthief - as long as we talking about shots in isolation. Shoot into the same area more than a few times though and you will get holes through it. You'll probably want more thickness for repeated shooting . . .

 

[Hateful McNasty]

Also if the back plate is sloped that can help direct / deflect the pellet/ energy downward

 

[huntr]

OR… you could just buy a Highwild or Champion trap for less than a sheet of 3/4 inch plywood that will last forever and stop everything… at least up to .30 cal. @ 90 fpe.

 

[rigbymauser]

3/4 inch ply is a lot to go through for a .177 or .22

Yes but it does depend on distance and power. The 22grain solids I use doing 20 ft/ibs from muzzle in .177cal zips right through 13mm plywood at 70m. Imagine a +40ft/ibs gun. 18mm ply as backstop is good for lowpower and lightweight pellets only.