njc110381 Posted May 12, 2007 Report Share Posted May 12, 2007 I'm after a target holder that I can use with a HMR. My air rifle version is a 5mm steel plate that is mounted on a large coil spring inside a square box so that when hit the spring absorbs the impact and the pellet drops into the bottom of the holder. Have any of you seen a heavy duty version of this that could be shot with a rimfire rifle? I'm thinking I may try to make one that's the same design but with 10mm plate. Is that a good idea? Quote Link to comment Share on other sites More sharing options...
deadeye ive Posted May 12, 2007 Report Share Posted May 12, 2007 The target backstop below is a 6mm thick Stainless Steel welded to 10mm thick mildsteel plate swinging plate .The addition of 2 further 10mm thick mild steel plates make it able to with stand some large full bore calibres at 100m At 110yds .223 penetrates into 8mm of a 10mm plate .243 goes straight through . ................................................... your HMR is really a 100 yd rifle and that is where I would zero IMO accordingly so I'd be surprised if it could penetrate 5mm at that distance .......if the steel is suitable then a .22lr won't penetrate 5mm at 60yds either because that's all I had to start with before making this .I simply place a target 6/8' infront of it . Quote Link to comment Share on other sites More sharing options...
njc110381 Posted May 12, 2007 Author Report Share Posted May 12, 2007 I never thought of letting it swing on a frame like that. I'll try shooting my air rifle target to see what happens to it. It was only £10 so not the end of the world if I break it! Would the HMR dent 5mm steel at 100m? It's a very small bullet! Thanks for the picture and advice Quote Link to comment Share on other sites More sharing options...
deadeye ive Posted May 12, 2007 Report Share Posted May 12, 2007 I never thought of letting it swing on a frame like that. I'll try shooting my air rifle target to see what happens to it. It was only £10 so not the end of the world if I break it! Would the HMR dent 5mm steel at 100m? It's a very small bullet! Thanks for the picture and advice njc read my post again ,especially the last bit Quote Link to comment Share on other sites More sharing options...
njc110381 Posted May 12, 2007 Author Report Share Posted May 12, 2007 You said it wouldn't penetrate at 100 yards Does that mean it wont mess it up either? I was wondering if the plate would get knocked out of shape by the repeated impacts of the bullets hitting it? I know it's not the same thing, but a lot of the PSG targets at the club are totally mangled. Not penetrated, but very bent! I suppose the HMR round doesn't carry enough weight to do that sort of thing, as a 12g slug weighs 28grams rather than 17 grains. Cheers for the advice Quote Link to comment Share on other sites More sharing options...
kip270 Posted May 12, 2007 Report Share Posted May 12, 2007 You said it wouldn't penetrate at 100 yards Does that mean it wont mess it up either? I was wondering if the plate would get knocked out of shape by the repeated impacts of the bullets hitting it? I know it's not the same thing, but a lot of the PSG targets at the club are totally mangled. Not penetrated, but very bent! I suppose the HMR round doesn't carry enough weight to do that sort of thing, as a 12g slug weighs 28grams rather than 17 grains. Cheers for the advice Take a look here, he was shooting at some steel with a .17hmr http://www.varmintal.com/17hmr.htm Quote Link to comment Share on other sites More sharing options...
njc110381 Posted May 12, 2007 Author Report Share Posted May 12, 2007 That's a very good site for info on the HMR. I've spent a lot of time on there and even showed the FEO some of his charts on the visit to prove I'd been doing my homework! 3/16" is about 5mm isn't it? That's a pretty big dent, but at much closer range than 100yds. The bullet has lost 80 ft-lbs between 25yds and 100yds, that's like 1/3 of it's muzzle energy gone. It's never going to do that sort of damage at 100yds. I have a big sheet of 5mm stainless to replace the backplate with if it does get wrecked, so it doesn't matter. It's hard to believe how much potential that little bullet has really, it's tiny! Quote Link to comment Share on other sites More sharing options...
njc110381 Posted May 12, 2007 Author Report Share Posted May 12, 2007 Someone on another site (probably not allowed to say who) has just showed me this. I hope it's ok to post the link! http://www.cabelas.com/cabelas/en/template...&hasJS=true Any good do you think? Only £40 delivered! Quote Link to comment Share on other sites More sharing options...
kip270 Posted May 12, 2007 Report Share Posted May 12, 2007 Can i ask why you want/need one of these?? As long as you have a good backstop just cut a A4 size piece of hardboard and make a stake, with the metal target the bullets impact will be loud Or see if you can get someone to make something like this Quote Link to comment Share on other sites More sharing options...
naddan28 Posted May 12, 2007 Report Share Posted May 12, 2007 I imagine the bang of the bullets is the least of his worries if the nieghbours don't mind a HMR being shot in the first place? Quote Link to comment Share on other sites More sharing options...
dazzyboi Posted May 12, 2007 Report Share Posted May 12, 2007 Iv been using a mound as a backstop, but i wouldnt mind trying out this idea out, something to put into the back of the car to use as a zero'in target. Quote Link to comment Share on other sites More sharing options...
deadeye ive Posted May 13, 2007 Report Share Posted May 13, 2007 You said it wouldn't penetrate at 100 yards Does that mean it wont mess it up either? I was wondering if the plate would get knocked out of shape by the repeated impacts of the bullets hitting it? I know it's not the same thing, but a lot of the PSG targets at the club are totally mangled. Not penetrated, but very bent! I suppose the HMR round doesn't carry enough weight to do that sort of thing, as a 12g slug weighs 28grams rather than 17 grains. Cheers for the advice yes the plate will distort but again if your zeroing 100yds with the hmr and 60yds with the .22lr then a piece of 5mm quality steel is more than adequate Now a .223 and that's a different story Quote Link to comment Share on other sites More sharing options...
tikkamark Posted May 13, 2007 Report Share Posted May 13, 2007 dead eye thats a quality looking frame are you a metal fabricator or sheet metal worker?Im a metal fab man myself do a lot of tig welding.I might make one like that myself a plate or two of 10mm stainless should stand up to the job fairly well Do you have paper stuck on to the frame directly or do you place a target on another frame in front of it? Quote Link to comment Share on other sites More sharing options...
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