6PPC new bbl ??????

[Eric Leonard]

bought rifle from here a while back,,Farley action 6BR 6PPC switch bbl,,the 6BR bbl was new and shoots lights out,,I think the PPC needs replaced as it seems to copper foul quickly,,when ordering bbl to finish at 21 3/4 do you just get a regular HV blank and have it cut back or order a shorter blank,,

probably gonna get a Krieger .237 14 twist,,,I think I could make 13.5 lbs UBR weight with straight 1.250,,but is there any difference in a blank 29 inches vrs one ordered at say 24 inches??

thanx

 

[JimPag]

Usually I have my 30BR barrels cut to 22.5". I order a 28" HV contour blank and my gunsmith figures out how much of each end to use to make it a certain weight.

 

[SS427]

I have ordered a barrel that will be 22 inches and I ordered the Krieger #20 Benchrest Short. Slightly different dimensions than the light varmint but see no reason to order a long barrel and waste those extra inches. I plan to use one end that gets cut off for shoulder bump gage.

 

[dkhunt14]

I would order an inch or two over what length you want. They lap barrels with a taper and they are tighter at muzzle. They usually figure you are going to cut one inch off because of the lap. Broughton's come with a saw cut about one inch back from muzzle. They want you to cut right behind saw cut. If the muzzle is not tighter then the rest of the bore, it will not shoot as good. Matt

 

[LHSmith]

I don't see how you could make weight with a straight 1.25 barrel (uncontoured). Why would you want to? There is the question of rifle balance to consider. Ordering a shorter barrel ( 27" is pretty much the norm for SR BR) won't be any cheaper, and those who stock them will offer 27 /29".
If your thinking is the heaviest barrel equates to greater accuracy, check out the IBS and NBRSA record books particularly the aggs....there is no clear correlation that between LV and HV one has an accuracy advantage. In fact many competitors use the same LV gun when contesting both classes. So for your intended use for SR BR stick with what works.

 

[Eric Leonard]

the rifle is 10.5 lbs with 21 inch bbl that tapers from 1.200 to .900,,,,UBR weight is 13.5 so I can add 3 lbs,,a pound and a half in the stock and a pound and a half in the bbl should balance the same as it does now shouldnt it??

with the 6BR 28 inch HV bbl it is less than 13.5 with no weights and tracks very well

 

[LHSmith]

How did the rifle in PPC configuration track? If you ever decide to compete in group comp. -you are limiting your events to compete in if you build it at 13.5 #. It may take some experimenting with stock weights to get it right. Does the stock already have ability to install weights?

 

[Eric Leonard]

yes it is a Terry Leonard stock with the space for the weights,,

it does track well at 10.5 lbs also,,

 

[Tim Singleton]

Do you shoot UBR at Gallatin?

 

[Eric Leonard]

gonna try and have rifle ready to shoot at the Steamplant but gonna be tight makin the first match,,
guess I could shoot the 6BR if I dont get the PPC tuned by then

 

[Tim Singleton]

If you haven't. I would pick Rick Fox brain on what is doing well in UBR.
He is Greyfox on here

 

[Eric Leonard]

I been talkin to him some,,I shot smallbore there some a couple years ago and hope to make the UBR this spring,,

 

[Greyfox]

I been talkin to him some,,I shot smallbore there some a couple years ago and hope to make the UBR this spring,,

Eric,
I would tend to agree that you don't need the longer barrel. But, that would be your choice. Having a rifle more than 13.5 lbs won't prohibit you from competition in UBR, it would only mean that you would compete in Unlimited Class rather than Custom Class. There are usually fewer competitors in UL, but it is every bit as tough as Custom.

Rick

 

[Eric Leonard]

I dont really want longer just heavier,,from all I read 20-22 inches is best for 6PPC and figured if I am 3 lbs light I would add weight in the stock and in the bbl to get up just under the 13.5 limit,,

I could get an exact weight bbl as I have and stay at 10.5 if thats what experienced shooters tell me works best ,,

 

[BoydAllen]

A friend uses cast laps (with no abrasive) to "slug" barrels before chamberning them. This accomplishes several worthwhile things. He can measure the groove diameter, identify any loose or tight spots, and if the barrel has choke, learn where it begins. I realize that this is not typical, but given what he learns this way I suggest that more smiths adopt this procedure. A few do it, but most do not. Knowing what I have learned from my friend, I would not let external dimensions and weight determine how a barrel was cut to length. I would pay more attention to its internal dimensions.

 

[Eric Leonard]

so I need a 27 inch HV blank and try and find the tight spot in the bore and whack it off and run with it??

I know of some smallbore smiths that do what you are saying,,

 

[BoydAllen]

It is a little more complicated than that. The choke needs to be in a usable place, and the bore behind it needs to be uniform. Choke is only good if it falls in a narrow range. Too much and you will have jacket fouling issues. Despite what some have said, a barrel does not have to have choke to shoot really well, but it should not get larger toward the muzzle end by any amount. This is not some sort of slap dash measurement. It requires skill and there is a learning curve. I would do a lot of practicing on barrels that you already own.