I just bought a new rifle its a ruger M77 in 30/06 i fired 3 boxes of factory loads hornady light mag, federal high energy, and a box of winchester super -x. Why wont the fired brass fit back into my chamber Someone told me they had the same thing with there M77 in 338 In order to reload i will have to full lenght size.

It sounds like you might have a out of round chamber. Try marking a round and rechambering it in the same position after fireing. If it goes back in, I`d have it lookd it by a smith and sent back to Ruger if that`s the problem.

I believe that your rifle has an imperfect chamber; maybe an excess of headspace, so, when you shoot, the brass stretches excessively. A correctly chambered rifle should easily chamber a fired brass. - Lorenzo

I just went through the same thing with a fresh rechamber job and am having it re-done. With yours being a new rifle I would definitely send it back for a new barrel.
Good luck
FRank

Ruger is noted for poor bores and it is likely your chamber is faulty in head space and out of round. Once fired brass should chamber with ease in the same rifle it was originally fired in with out FL resizing.

You could return the rifle to Ruger for a barrel replacement, but it is a good chance you will end up with another poor barrel just like the one now on the rifle. If they can't put a good barrel on the first time what leads you to beleive they will do it a second time. I have owned two Ruger rifles and both were not kept very long for a number of reasons. The two I once owned were very poor grouping rifles with lousy triggers that no amount of tuning would fix. Rather than put more money into the rifles, I opted to give them new homes and glad I did so.

Some factory rifle makers produce less than perfect products. As long as the rifle goes off and the bullet exits the barrel, it is considered well with in their specs for that hunting rifle, just ask Remington on their hot line.

I really don't know where the hell you guys get your information about Ruger firearms having poor barrels!

I have over 45 of them, and every one under .308 caliber will shoot 5-shot, 200-yard groups of less than 1 inch (some as small as 0.25 inch), and those over .308 will do less than 1.5 inch!

Granted, the trigger on the MK II rifles suck, and the conversion on their single action revolvers sucks, but you have to blame user stupidity and lwayers for that ... NOT RUGER!

Before we all jump to conclusions on your chamber, are you trying to get fired brass back in by trying to make the rifle feed it? Very rare to find a rifle that will feed empties, put one under the extractor with the bolt removed and then insert the whole unit and see if it fits that way before you go sending the rifle off for repair.

Tanoose:

You didn't say what you did to the brass before determining it won't fit. More information, please.

The rifle went back to Ruger today, i did a close inspection of the brass the brass was scratched coming out and when i tried to put the fired cartridge back into the chamber i couldn't close the bolt . The marks on the brass showed a scratch on the very top so i droped the floor plate and checked the chamber with a flashlight, where a found a a mare in the chamber. So off it went , i guess its easy for them to just change the barrel and i hope its as accurate as this one was. I guess i have been pretty lucky inthe past as this is the only problem i have ever had with a new rifle,and thats over 30 years. Thanks for your all your help. Later Tanoose