.17 Rem Question (tight barrel?)

M

muslmutt

Guest
Hi.
I have a Rem 700 BDL I have been working with. In fact we talked about the bedding and floating in another post. Well, when cleaning the barrel I noticed a unique (to me) characteristic about this rifle and was wondering about the effects of this characteristic. When cleaning the barrel I typically start with Kroil on a patch. The first patch down the barrel will get to the end of the chamber and feels like it will not go further. In fact it feels like I have too big or thick of a patch, or the wrong jag. With enough pressure the patch will go. The next patch goes down the tube like butter, and the whole job is done quite quickly, copper removal and all. Oddly, how many shots fired seems to have no effect on this tight first patch. My other .17 Rem does not do this, but it is custom rifle.
My questions are: What exactly is going on here? What does it mean to me?

Of course I have theories but I would appreciate additional input.
Thanks.
Matt.
 
On tight throat problem

I think it is a build up of some sort as My 220Swift does the same thing. At first I thought it was throat erosion but with a through clean it goes away.:eek:
 
Thanks. I have thoroughly cleaned. Weird thing is 1 shot and its back. 20 shots is no worse, and it cleans up quick, it hardly collects any copper, for a .17 Rem. anyway.
 
When it builds up to the point that it wont go away, the "carbon ring" has developed, and one of the bore pastes is the best method to get rid of it.
 
I have read of this, but I have not read a description of how is behaves as it is developing. The guys at the 204 Ruger site seem to feel certain powders greatly contribute to its development. Any advice on how to avoid the development of a carbon ring.
 
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Try using the eqivalent powder of what you are using now from the VhitaVuouri lineup. I have found them to be the cleanest burning of any powders I have used. Another benefit that I have run into is the reduction of fliers in my groups. Every group fired looks like a group, some smaller then others, but nothing sticking out in an odd direction.

I have noticed with some powders that I had to stab the patch off-center by a fair amount just to get them started. After a few it gets better. It seemed like about 50rds, the accuracy had gone away for keeps, until I used one of the bore pastes to get rid of the carbon ring. Then it would shoot again. I have used almost all of the bore pastes, and they all work.

The only suggestion I have to help eliminate the carbon ring is to use the cleanest burning powder that shoots well, and run a couple of wet patches throught the bore after every 10 shots to keep the residue down. Butch's Bore Shine has proven to me to put the first shot right back in the group after a cleaning. If you run some patches through every 10 rds, it also lets the barrel cool a little bit.

I have a theory that the carbon ring squeezes the bullet down to get through the bore, just like it does to your patch, and has the same effect as a loose bore does to accuracy. I cant prove it, but Im stickin to it.
 
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