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View Full Version : .236 6ppc bore??



skeetlee
09-03-2010, 04:21 PM
I have been shooting Brux barrels now for a couple years and i really really like them. I haven't had a bad one yet and as a matter of fact, they all have been way above average. At least i think so!! Anyway i want to try a Brux on my 6ppc for next years comp season and when i called brux to order the barrel they recommended a .236 bore. I wasn't sure if that was a good idea or not for the bullets we use in this game of point blank benchrest?? I have talked to a couple real good fellas here and one of them doesn't think its a real good idea. Usually that would be a good enough reason for me not to order one, but Brux really seems to think its the way to go, and since i want to use a brux barrel next year i want to do a little more research on this subject before i order the barrel. Has anyone here or is anyone here shooting a .236 bore barrel on the ppc rifle, and if so whats your thoughts? I am more than sure Brux would make me a .237 bore but i can tell by the way he talks he wants me to try the .236 I thought this might make a good topic as well so please let me know your thoughts

skeetlee
09-03-2010, 07:03 PM
thanks george i didnt realise that. I think i will go ahead and try the Brux barrel. I sure have had good results with them. Thanks as always! Lee

abintx
09-03-2010, 07:52 PM
Anyway i want to try a Brux on my 6ppc for next years comp season and when i called brux to order the barrel they recommended a .236 bore. I wasn't sure if that was a good idea or not for the bullets we use in this game of point blank benchrest?I have talked to a couple real good fellas here and one of them doesn't think its a real good idea. Usually that would be a good enough reason for me not to order one, but Brux really seems to think its the way to go, and since i want to use a brux barrel next year i want to do a little more research on this subject before i order the barrel. Has anyone here or is anyone here shooting a .236 bore barrel on the ppc rifle, and if so whats your thoughts? I am more than sure Brux would make me a .237 bore but i can tell by the way he talks he wants me to try the .236. I thought this might make a good topic as well so please let me know your thoughts

The last barrel I purchased for my 6PPC was a Krieger with a .237 bore diameter. The decision to go with the .237 was based on Krieger's records of the most ordered bore size [by a large margin] for the 6PPC.

skeetlee
09-03-2010, 08:20 PM
I dont have any tools that measure the forth decemal point. so i dont really know how big the 6mm bullets im shooting are, if that even matters?? I love George ulrich 66.5gr little uglies bullets and i always hope the barrel im shooting will shot them. So far so good. The other bullet i like to shoot, or have had good results with are Barts 68gr fb bullets and BIB 67gr fb bullets. again, i dont really know what they measure? I need to buy a proper tool anyway, since im going to try my hand at turning brass.
Maybe its a mental thing, but i feel very confident with Brux barrels, and i really want to shoot one on my 6ppc. So i need to make a choice on what bore to go with. Maybe i shoud try the .236 just to see how it does?? Thanks guys! Lee

PS sorry about the spelling fellas. My google spell check stoped working after i got my lap top back from the repair guy. Im lost without it, and im not sure what to do!! LOL!! Any ideas? The spell check button is still there but it says unable to conect to google? I dont know anything about that!

JohnVm
09-03-2010, 08:46 PM
Skeet, the .236 barrels can shoot just as well as any but they usually need less powder before pressure becomes a problem, this may be a good option for those who have a pile of the really slow 8208 or for those who don't like pouring slowly out of long drop tubes.

JerrySharrett
09-03-2010, 09:21 PM
Most 100/200 6mm benchrest barrels are 0.237/0.243". A 0.236 minimum bore provides a lot of distortion for the normal 6mm bullets which most measure 0.2433" diameter. There are some bullet makers, however, that offer bullets for those smaller bores. Ronnie Cheek did offer a bullet that measured 0.2431" for tighter bore barrels. I don't know if he still offers that particular bullet.

j mckinnie
09-03-2010, 09:27 PM
In OZ we only seemed to get 236 for a while they shoot good its all smoke and mirrors just develope a load to suit the barrel like normal.I have both in Krieger and the 237 with over 1000 is still my best barrel the 236 isnt far behind but i think it hasnt had enough rounds on it yet.If you get a good barrel non of this matters.

abintx
09-03-2010, 10:12 PM
PS sorry about the spelling fellas. My google spell check stoped working after i got my lap top back from the repair guy. Im lost without it, and im not sure what to do!! LOL!! Any ideas? The spell check button is still there but it says unable to conect to google? I dont know anything about that!

Give this link a try it has more than just spelling: http://dictionary.reference.com/.

Eddie Harren
09-04-2010, 07:23 AM
.236 or .237, it all makes for some stimulating Sat. morn. conversation.

Butch Lambert
09-04-2010, 11:32 AM
You are right Eddie.

Jan
09-04-2010, 12:28 PM
Last spring I chambered 4 new XXX X barrels that were head stamped .237 and 3 of the 4 were actually .236. I called the manufacturer and and gave them the serial numbers, they checked and said they are .236. I said YES, I agree BUT they are marked .237. They blamed it on QC and said they would work on it. The owner of the barrels did not care either way! ..Be well, shoot well............ Jan

skeetlee
09-04-2010, 03:22 PM
interesting! what about 22cal barrels. whats the more common bore size? Lee

rcw3
09-04-2010, 06:47 PM
I realize what I post on this forum may be considered by some bench rest shooters as not of any particular significance to what they do at the range, but the .236" vs .237" bore debate has gone on for a while without any decisive results one way or the other. Rarely on the forums do you see anyone particularly passionate one way or the other on the bore size issue, as you can see with certain other shooting issues. It seems people sometimes have preferences on bore size, but it does not seem to be based upon any form of testing, but more based on what they had in the past, or what some notable shooter uses. I have numerous barrels in each size, chambered in various cartridges, and I cannot honestly say there is a decisively better performance between one vs the other.

The above being said, for certain applications and potential bullet uses (none of them bench rest shooting) I would tend to use a .236" vs a .237" bore.

For a highpower rifle or a prone rifle where there will be a long expected barrel use I would always lean to a .236" bore. From the first shot though the barrel, the bore exhibits wear and opens up, and a tighter bore may be helpful for longevity. With some highpower or prone rifles with the tighter bores, I have noticed it takes 350-500 rounds down some barrels for a rifle to "settle in", but then again those barrels may not be pulled off until after 2500-3000 rounds (whereas for a bench rifle, a barrel may be pulled and done before 1000 rounds).

If you are running commercial bullets, some lots can be "skinny" (slightly undersize in diameter) and they don't always shoot as well as they might unless out of a tighter bore. I remember a couple years back Berger had a certain lot of 6mm 105 VLD's, and Lapua had a lot of 105 Scenars, that were "skinny" and there were shooter complaints about them not shooting well (although they shot well in the .236" bore barrels I had at that time). Palma team shooters have typically tended to run the tight 30 Cal. .298" x .3075" (or tighter) bores, because in the past they "got burned" having to shoot ammo in matches where the supplied ammo had "skinny" projectiles (i.e. the stuff shot poorly in the standard .300" x .308" bore barrels).

The reality is for a 6 PPC bench rest application, it may not really matter whether you run a .236" or .237", as you will probably pull the barrel long before the bore wears and opens up too much and you will likely be using premium custom bullets that are dimensionally well dialed into the barrel and type of shooting you are doing.

Robert Whitley