.308 through a .270 - oh my...

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Hossless

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:(:mad:Hello, new member here. This is almost too shameful to post - but here goes.
I recently purchased a new T/C venture .270 rifle. I finally got a scope mounted and headed to the range today. I threw 2 boxes of .270 shells in the range bag. When I got to the range I found a box of what I thought was .270, as it turns out - it was .308. I thought I had gotten rid of all my .308 I grabbed the two rounds and loaded it into the magazine. It was a little tight but loaded fine. Put the mag into the rifle and loaded the 308 into the 270 chamber. (I know, you all are probably shaking your heads in disgust)...... Me too. Again, it chambered a little tight but chambered none the less. Fired one shot, then fired another. Had problems extracting the second 308 brass. On further inspection, I realized I had just shot two .308 rounds through a .270 barrel. I procceeded to shoot about 30 rounds of the .270 ammo I brought and I couldn't hit a 12" target at 50 yards. I knew I blew it big time. My question is, did I ruin the barrel, and what else might I have damaged? What a wonderful way to introduce myself to this forum... LOL Embarrassed to say the least.
Appreciate any help, Chris
 
Only Real Men admit their mistakes. Don't feel like the Lone Ranger. Unfortunately it will probably have to be rebarreled.
 
Kudos to you for admitting your mistake. Sadly your barrel is most likely toast. That said be glad the gun didn't blow up in your face.
 
308 into 270 barrel

I guess I'll call T/C arms tomorrow and see if I can get another barrel. Still can't believe I did it... Been shooting most of my life. Just goes to show you how costly carelessness can be. Yes, fortunate it didn't blow up in my face.
 
Does it shoot straight with the .308 ;)

What's the psi on a .270? IIRC the .308 is around 60k psi

Glad nobody was hurt
 
WOW! :eek:

SIGSHR said it well
Only Real Men admit their mistakes

Thankfully you or anyone around you wasn't injured. I believe your barrel is done for and I would advise you not to shoot anything else through that weapon until you have a gunsmith take a look at it.

Welcome to TFL I have found this to be the best gun forum on the web. I have learned a lot from the folks here and I'm sure you will also.
 
"Does it shoot straight with the .308" LOL That right there is funny. The irony is - YES it shot great those two rounds. I think it was about MOA, but that was at 30 yards for the bore sight in. After that, I could hit the target at 30 yards with the .270 ammo, but when I moved out to 50 + yards I coudn't even see where the bullet was hitting on 12" shoot N C targets - another words, I couldn't hit the target or even close.
 
At least it wasnt a 338 federal they chamber too and probably would have done more than bulged the barrel. Think of this as a cheap lesson (cheaper than facial reconstruction) but dont feel bad many people make mistakes after years of shooting because they get comfortable. I've been shooting since I was five and just a few years ago I broke one of the first rules of gun safety and put a .22 through my finger... again a cheap lesson as I was with friends and could have taken a life that day had it not been pointed in a safe direction (other than the fact that my finger was over the muzzle). As gun owners it is our responsibility to keep on our game and not give the antigunners leverage.
 
I hope you can get the thing working again. Hopefully the barrel was damaged without stretching or warping the action.


I'm curious, though. All the times I hear about things like this, it just throws me completely for a loop that people can mistake one cartridge for another like that. I just don't understand it. The .308 to a .270 is going up 2 caliber ranges, and a shorter case.

In my view, the one may as well be purple and the other neon green. I couldn't mistake one for the other anymore than I could a .380 for a .44 magnum.

If it was always just a matter of carelessness or stupidity, that I could understand. but what we have here, is a guy who obviously knows his guns, or he wouldn't have bought the TC. He's fired .308, and knew what a .270 looks like, and handled both cartridges, but still, mistook one for the other.

I found a buttload of .380 brass in a bunch of luger that my brother left with me to reload; he'd been picking up somebody's 380 leavings and didn't know it. The difference between them is enormous, it seems to me, and I told him he was an idiot.

The op doesn't sound stupid, and he doesn't sound careless, so obviously, he saw the cartridge and genuinely misidentified them. :confused:

I'm not ragging at you. I'm genuinely mystified. What makes some of us see them differently? are there really people who can't tell the difference between some rounds without reading headstamps?

Maybe it's like my wife. she has no concept of measurements. a foot can be a yard and an inch can be a foot.
 
@ Briandg, I agree, it was a STUPID mistake - the buck stops here. When I started loading the 308 into the magazine, it seemed a tad short and fat. There were lots of folks shooting within almost arms reach at the range, (no excuse), 'cause the buck stops here. It was inatention and abject carelessness, and probably being in a bit of a hurry. All sorts of reasons "accidents" happen - many due to not paying attention or being distracted. So - I take full credit for being an idiot for a couple of minutes, and thank GOD no one got injured... All I could do at the range when I made this brilliant move was hope that no one was watching.
 
I can't believe you shot 30 rounds of .270 out of it! I would have been off to the closest Smith or calling TC right away. I'm surprised the bullets sweged down bore, I'll bet there is some serious copper fouling in your bore if the barrel isn't bulged.
 
Gimme a break fellas. I already admitted it was a matter of not paying attention, hurry, carelessness, stupidity - should I go on? I'm a man who can swallow his pride. Never heard this topic brought up before, so I figured gee, lets see if the 270 bullets will still fly - they did - but not straight... A call to TC, and probably after that, my gunsmith.
Ya'll have a good night
 
It was just a mistake. Sure it could have been prevented, but it was complacency, not stupidity.

Sometimes if you *know* something you see what you want, not what is there. He *knew* he'd gotten rid of the .308. He *knew* he put .270 in his bag. Pulled some rounds out and shot. Got a cheap lesson in checking his gear. And the difference between the .270 and .308 isn't the same as a 30-06 and a .223.

Get off your soap boxes and quit acting like you've never made a mistake.

This one time, in Baghdad Iraq. Me being PFC snuffy coming in from patrol. Forgot to clear my 203 because I *never* use it. Walked around the base and finally checked it to find it loaded with a less than lethal nerf round I was going to use on a truck driver who kept getting too close. Was it dangerous? Yes. Am I stupid? No...I just *knew* it wasn't loaded.

That mistake made me paranoid about clearing all my weapons. So, in the end, it helped me I'm sure.
 
I have seen that happen before, .308 shot in a .270. Two separate times. No damage to the .270. I'd clean the barrel real good and have a local smith look it over. If you don't clean it before taking it in he will have to before he can inspect the bore. If he finds no damage I would take it back to the range, leaving all .308 ammo at home! Its probably OK but then again maybe not and a new barrel may be in your future.
 
Hoseless - Welcome to the forum :) Everyone had to start somewheres. About your latest drama, you're not Robinson Crusoe there. We've all done some boo-boos at one stage. All one can do is simply learn from it and move on, making sure it doesn't happen again. I can relate to your story, not with a rifle, albeit in a pistol.

I have a BFR by Magnum Research in .45/70, 7 1/2" barrel, excellent shooter this one, am an absolute fan of it for the Metallic Silhouette Big Bore. One day, someone new to the sport of pistol shooting wanted a go of it after watching me fire some reloads I had made of my own.

The reloads I had made were Hawkesbury 300 grain lead projectiles, Starline brass, Federal Large Rifle Match primers, 15.5 grains of Trail Boss, which has proven to be a reliable, accurate load. Its recoil is comparable to a mild .44 Magnum load.

I demostrated for him how to use the BFR by firing the 5 rounds, the entire cylinder's compliment. I thought by having had firing a couple of rounds by now, all is well. How wrong I was.

He fired the two first rounds, went off normally, but the third one didn't sound right. The trouble with me is that I'm profoundly deaf and I'm at the line wearing hearing muffs, so unfortunately, I can't tell much difference, unless I was firing the BFR. Then I would have known something was wrong straight away and stop shooting the pistol, unload for further inspection.

Unluckily, the novice shooter didn't know and proceed to cycle the next round, only to fire it before I could stop him. BANG! Lots of recoil. Instead of one hole in the target, there was two! Lots of consternation to what was going on.

We figured out, my Dad and myself, very quickly that there was a stuck projectile after the third round fired and the barrel bulged slightly after having another projectile hit it up the arse. I was pretty angry with myself for a while, kicking myself up the backside over the whole thing. Naturally, I took all responsibility for it. Murphy's Law at its finest! :mad:

It took a long while to figure out what actually happened. Dad and a witness told me the round did go off, plenty of powder burned off but something wasn't quite right. So, after pulling all the remaining rounds apart, inspection of my reloading technique and the faulty round, it turns out that there was the odd primer in the works and it didn't provide enough spark to make the powder burn completely.

From that experience, I've learnt a lot, same with my Dad. It was one of those very rare kind of misfires. That said, I'm glad that Magnum Research makes one hell of a revolver in the BFR. So, at the moment, I'm having the BFR sent away to Magnum Research to have another new barrel fitted. :(

I look at it this way though, I'm very lucky no one else, including my Dad and myself, was hurt, so, I'm glad as well for you that no one else even yourself wasn't hurt big-time.

Yes, I do feel a bit awkward about posting this, but in doing so, I hope someone else learns from what happened to me and from you to prevent further dramas. At the end of the day though, when it comes to reloading, even when you dedicate all your attention and concentration, all the care in the world in storing your components, you still can come across a faulty lot of primers or powder or brass, take your pick.

I've been very lucky so far I hadn't had any other major drama in the last 15 years of shooting with all of my rifles and pistols. Anyway, here's to many more years of safe, enjoyable shooting. :)
 
Gotta be careful with shotgun shells also.

We were at a skeet shoot and guy chambered a 20 gauge shell in his 12 gauge. The 20 went into his barrel, pulled the trigger. Click. Racked a following 12gauge shell, kaboom.

Barrel burst out the side and luckily no one was hurt.
 
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