Home Forums Hunting & Shooting Gunsmithing 300 Win Mag Problem....? HELP!!!

I loaded up several rounds for my Buddie's Savage Steven 300 win mag sporter barrel, and it shot these reloads very well, but after awhile he started shooting it alot...HOT... since the ammo was free. It started spraying bullets 3-6" wild. Heavy barrel cleaning made no difference. I screwed on two different used 300 sporter barrels, but still no difference... but I'm not sure of those barrels condition either. But surely 3 barrels can't all be doing the same thing....CAN THEY?

We had installed a Boyd laminated stock on it prior to it's going crazy, and it shot pretty good. Since this problem arose, I've rebedded it, opened up the barrel channel, did all I can think of with the stock. I was going to try his old stock but he discarded it...DUH. I am at my wit's end with this thing. I'm ready to buy a factory stock to rule out that problem, and to buy a new/used barrel... maybe something besides a sporter.... or whatever. I've got to get this thing fixed while I still have hairs in my head. Please help me with your knowledge.... or stocks or barrels. Thanks....Dan

EDIT.... PS.... I have also tried different quality scopes.... no difference..... and it shoots the same with factory rounds.

Scope or mounts not right?

Micky... I forgot to add that statement...thanks..

EDIT.... PS.... I have also tried different quality scopes.... no difference.

Well, if its not the barrel, or the stock, or the scope or mounts, have you mixed up primers or powder?

Well Micky.... I forgot to add that part as well.... LOL. Factory rounds make no difference. Factory and reloads still scatter.... it must be the barrel.

What about the bases and rings? Have you tried a different setup?

Fouled barrel if not burned out!

I've tried different quality scopes... and even a couple of new scopes... and diff rings... but not bases... they are the two piece weaver split bases. They seem super tight as I've messed with them as well.

This thing was shooting good for him with his factory rounds... dumming me thought I'd help him out with a lot of reloads... which shot good for awhile, even in the new stock. He shot it one summer day about 30 rds straight.... (barrel must have been HOT) ... he was happy, even out to 300 yds. Then after that outing, it sprayed the rounds all over for him. A few days later i took it and shot it 20 times, and was happy with it... gave it back to him... and it sprayed again... I then took it back again.. and it sprayed for me as well... and this is where Ive been ever since.
I cleaned it super dupper clean. It seemed to shoot well for a couple of shots, then went back to spraying. It seems like the same thing happens with all three used barrels... both with factory and my reloads..... and my reloads are good ones.... but this rifle is making me out to be a liar...LOL. I would have been tickled if his factory rds shot great... but they didn't.

It must be the barrel because it seemed to get worse and worse the more it was shot. I guess I'll make a WTB thread for another barrel. thanks Guys.

I used a borescope on all barrels and they were dirty. I super brushed them all to a mirror finish clean before I started all this mess of changing out barrels.

If they shoot good clean, then foul quickly, DBC may be a big help.

DF

DBC...????

Dyna Bore Coat.

Lots of info here on the Fire, do a search.

It will just about eliminate or at least greatly reduce copper fouling.

It's nano particle material that is applied to a super clean bore. The heat from firing cures the material into the steel, creating a really slick surface.

DF

that sounds like a good idea, but probably too costly for a cheap factory sporter barrel

Not that expensive, just get a DBC kit and do it yourself.

A lot cheaper than a new barrel.

BTW, I DBC my new barrels, even premium ones.

Good stuff.

DF

Dyna Bore coat kit from Brownells is $40 and will treat more then one barrel.

looks like they discontinued it

There is clean, and then there is clean. Are you familiar with copper fouling, how to spot it, and how to clean it out? Assuming a decent scope properly mounted, and a stock that fits reasonably well, then what jKob said, shot out or badly fouled.

Google it.

Someone is selling it. Buy it direct.

DF

Midway has it in stock for $19.99

That's a good price.

DF