TonyRumore 1,332 Posted October 14, 2005 Report Share Posted October 14, 2005 Most shotguns have some wall thickness variation in the barrel, but this particular S-12 is the worst I have seen. Its .071" wall on one side and .089" on the other. See pic. http://www.hunt101.com/showphoto.php?photo=333695 Tony Rumore Tromix Corp Quote Link to post Share on other sites
dinzag 31 Posted October 14, 2005 Report Share Posted October 14, 2005 (edited) Edited October 14, 2005 by dinzag Quote Link to post Share on other sites
6500rpm 670 Posted October 14, 2005 Report Share Posted October 14, 2005 Pretty bad when you don't need a micrometer to pick up on it. Does there seem to be any pattern to date codes, and or, is this something that is consistant down the length of the barrel (or can the barrel have inconsistant high/low points). Hey Tony, since this is your area, when I cut my barrel and hit it with one of your crowning tools I noticed slight high spots about every 90 degrees around the barrel. At first I thought it had something to do with the cutter but after hitting it,and the cut off a few more passes I'm inclined to think it has something to do with the extrusion process. They almost appear to be hard spots in the metal. Can you explain what I'm seeing? Quote Link to post Share on other sites
dry_gulcher 0 Posted October 14, 2005 Report Share Posted October 14, 2005 haha... i just looked at mine... and it's possibly worse than that. guess i'd better buy another Quote Link to post Share on other sites
Bvamp 604 Posted October 15, 2005 Report Share Posted October 15, 2005 f it. shoot twice instead of once. its a scattergun. you cant really miss with it. like ive said before, the ak47 is made out of old beer cans in an unpowered, blind man's basement. Quote Link to post Share on other sites
6500rpm 670 Posted October 15, 2005 Report Share Posted October 15, 2005 If I gather right from some info given to me from Tony, the bore is good.....it's the outside diameter that's uneven. Not a problem in the real world until you get someone like me wanting to cut external barrel threads with a TAT and a die. If you center to the bore and the outside diameter changes, then your thread depth around the barrel changes too. The 12 looks to have some fine ass threads and you'de be missing .018" of them on part of the barrel he has pictured. Quote Link to post Share on other sites
McUZI 1 Posted October 15, 2005 Report Share Posted October 15, 2005 (edited) its a scattergun. you cant really miss with it. I'll take "Common Myths About Firearms That People Who Watch Too Much TV Believe" for $500, Alex. Anyway, I think I might know the source of that S12. If i'm correct, it shoots just fine so the variances in thickness are a non issue from a functional perspective. Edited October 16, 2005 by McUZI Quote Link to post Share on other sites
HunterGren 0 Posted October 15, 2005 Report Share Posted October 15, 2005 Does that cause any kind of problem? The barrel on my benelli looks a hell of alot worse then that & Ive always wondered if it was gonna crack open or something. Quote Link to post Share on other sites
kmoore 3 Posted October 15, 2005 Report Share Posted October 15, 2005 When I compared the thickness of the Saiga bbl vs the other shotties in my house I was surprised at how much thicker it was. Maybe this is why? lol. So they don't have to be centered. I sure hope not! Quote Link to post Share on other sites
jman 0 Posted October 16, 2005 Report Share Posted October 16, 2005 My Saiga looks good, mic'd in at about .005 deviation. But My Mossberg 500 is about .020 off, and it's a lot thinner to begin with. Wow! I think I'll start checking all the shotguns I buy in the future. Thanks for the observation! Quote Link to post Share on other sites
McUZI 1 Posted October 16, 2005 Report Share Posted October 16, 2005 BVAMP:and yeh mcuzi - it IS a scattergun. if you miss with it you have something wrong with you. It's like every time you speak, you show how truly little you know. It's amazing. Quote Link to post Share on other sites
Bvamp 604 Posted October 16, 2005 Report Share Posted October 16, 2005 stop being a fucktard, if you would be so kind. Quote Link to post Share on other sites
Caspian 32 Posted October 17, 2005 Report Share Posted October 17, 2005 here we go again. maybe we should clarify if you're talking about shooting in a room (10 feet), then you can easily miss with a scatter gun since the shot can't really spread out and you have a shot pattern of about 1 inch. If you're talking about shooting OO Buck at 20 yards, then you have a relitavely larger chance of hitting b/c of the increased shot pattern. there, you're both right. caspian Quote Link to post Share on other sites
Cobra 76 two 2,677 Posted October 18, 2005 Report Share Posted October 18, 2005 Being able to take out a 3" wide target close range with a shotgun is one thing. That is something you only need to do when competing in a shooting match or maybe knocking down a quail that just got up beside you in the field. But I have a feeling this is not about that..."here we go again". Sorry but I can't help but wonder how in the hell you could miss somebody from 10 feet even with a damned .22 long gun from the hip. I might not be able to pick which button I'll blow thru or even which part of the body I'll hit but you can be damned sure with a semi auto I will shoot a bunch of holes in your ass even if it is a one inch pattern 12 ga. That is unless you happen to be just one inch tall and one inch wide and then I'll take careful aim first. Home defense round selection then comes into play. Birdshot is obviously best for spread. Then you have choke selection. What if you happen to have a shot diverter? My point is, and was before, if you shoot at someone in your house with a 12 ga shotgun they will without a doubt shit themselves first and then if still standing try to hide or escape. Then remember you have a whole mag worth of that same stuff for him even if you happen to miss the first time (again not likely from 10'). Even if this perp happens to be pointing a gun at you he is not going to be able to concentrate very hard on hitting you with the muzzle flash and the shot coming at him. This is just my opinion however so please ignore if you don't agree or can't hit a 1 foot wide target from the hip even from 10- 15 feet. It's also a big chance you take if you come in my house armed with bad intent. OK now some expert student go ahead and tell me I need to take shotgun classes and make wise ass comments about pearls of wisdom. Quote Link to post Share on other sites
Jake 98c/11b 0 Posted October 18, 2005 Report Share Posted October 18, 2005 Having studied this kind of thing for some time I feel the need to chime in here. Under the stress of shooting on a two way range it is common for relatively accomplished shooters to miss their target at only a few yards. We are not talking about a nice quiet range or even hunting game, these targets shoot back and intend us harm. If you think your performance is not going to go to shit when the incoming rounds start to land you are sadly mistaken. I have seen even nationally ranked competitive shooters fail to make comparatively easy shots while I was deployed to Iraq. Modern training (for combat) is more about operant conditioning than it is marksmanship training. Stimulus (bad guy doing something that justifies shooting) response (drawstroke/presentation/shooting) is the goal. All said and done I have to say that I agree with McUzi, it is easy enough to miss with a shotgun. Still need to align the sights to target and the spread is not all that great. I have a 11" mossberg 500 at work and the spread is not all that great. It spreads the shot not more than an inch and a quarter or an inch and a half per yard traveled. The picture shows a 5 yard target and the gun that fired it. Extreme spread is 7.45 inches, the load was 1 oz 7 1/2 shot, 2 3/4 inch. A shotgun will not make up for bad shooting. Quote Link to post Share on other sites
CGuns 3 Posted October 30, 2005 Report Share Posted October 30, 2005 Mine is off by 1/100th of an inch. But, the barrel is so thick to begin with, I don't see it ever being a problem. Quote Link to post Share on other sites
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