Is your shooting bench on a raised berm so that you're shooting a downward angle at the backstop?
I actually did the opposite of what you did. I used dirt filled tires for the BACK of my berm, to increase the steepness of the back side and reduce the amount of dirt required. The front side is gravity slope. My berm gets A LOT of shooting, and over time a trench will be shot through the berm. So I like having the thicker side on front so I don't have to fix it as often.Got back down today. It was too wet to work on it, but here is a pic of where I left things:
Thanks,
Jack
I actually did the opposite of what you did. I used dirt filled tires for the BACK of my berm, to increase the steepness of the back side and reduce the amount of dirt required. The front side is gravity slope. My berm gets A LOT of shooting, and over time a trench will be shot through the berm. So I like having the thicker side on front so I don't have to fix it as often.
I have a different site where I built what was intended as a pistol-only berm where it was exclusively dirt filled tires, two rows offset, stacked over metal poles. Totally vertical. The berm is 20 yards from the firing position. I can't speak for .22 or 380, but 9mm and above there is non bounce-back, they penetrate the tires.
Lots of good ideas and some good safety tips as well. I “was” planning on building a berm/mound style backstop, using the excavated dirt from two projects I did over summer. But after reading through this thread, I see the value in creating some type of structure to hold the dirt in place as opposed to just a mound. Does anyone recommend a depth for how much dirt there should be from front to back of the mound? This will be a 100 yd range with mostly .308 type caliber hunting rounds and .22LR being shot into it. But I’d like to overbuild it for safety and future larger caliber use. Thanks.
The angle of impact is important here.Ive got a big pile of logs with earth fill as a back stop. We dont do much shooting at my range.....just an occasional shoot each year and a few sight ins. Nothing behind my targets or berms for about 1 mile or more....just lots of trees and vegetation. I've always been under the impression that if the bullet lands in relatively soft dirt....then any ricochets are not going too far. Angle hits on hard rock or steel could be another matter. I never hear of issues others have (around our low population area)......but you can never be too safe.
Sometimes I think I should have a somewhat higher mound where we shoot to improve the downward angle a bit. Can always improve on things I suppose. One of the reasons I want our hunters in an elevated blind.....always shooting down hill.
Can anyone provide a reference work on rifle ranges and the effects of ricochets?
Hmm. Somewhat surprising. Note taken. I'm sure the projectile style and jacket thickness will have a large bearing too. Ricochet is a concern....but I have no knowledge of a bad outcome despite several tens of thousands of rounds fired in my time. Especially during my varmint and prairie dog days. I suppose common sense goes a long way.The angle of impact is important here.
Early in my centerfire rifle days (I grew up in a shotgun-only deer zone) I took my 300WM out for load development on the family farm. I didn't have a backstop but I had a significant downward slope to the target, and a freshly plowed field behind the target. I figured shooting into the soft dirt and a decent angle was safe. I fired a couple dozen rounds of core=lokts to zero in, and afterwards found many of those bullets expanded and tumbled within 50 yards behind the target. Seemed to validate my safety assumptions.
Then I switched to Sierra Match Kings. I'd fired a dozen and a neighbor showed up who lived a mile down range. A couple had buzzed over his head while he was in his yard. So they had ricocheted off soft, plowed ground, at a decent angle, and still made it a mile down range. Forever changed my thoughts on these things. I want a pretty vertical backstop. "soft" doesn't really do it without a steep angle.