?? 6mmBR ??

[cocopuff]

Yes,I am still toying with the idea of the 6mmBR..

So what is your suggestions for a barrel...Length-diameter and
twist...Befor I go to far,this is going to be built on a Savage Mod
10 or perhaps a Stevens action...

It is always in the back of my mind..I know I will be needing to
get brass,bullets,dies,etc..But I think I may go ahead with the
plan even if I have to sell off a few items to get what I need..

I appreciate any ideas and suggestion..Thanks

 

[cocopuff]

well,this will be used for f class shoots..Either from the bench or prone.Most are shot between 180 to 400 yards around here. The stock I am looking at is a thumb hole..Not sure yet.This is why I ask about the barrel..I have the action already.And didn't want to order a barrel and end up getting the totaly wrong thing..And I may use it to kill a neighbors cat or two..lol

 

[A j shooter]

8 twist Hart Kreiger Broughten Shilen. Any top barrel makers are good . Call them and they will set you up with contour and lengths that you may need. I like my 8 twist hart shoots great.

 

[dansig]

go with the HV contour, as long as you don't plan on shooting from a standing position.
7.5 or 8 twist Krieger.
for length... just as long as possible.. 28" is good, if you can get 30" then go for it.

 

[cocopuff]

go with the HV contour, as long as you don't plan on shooting from a standing position.
7.5 or 8 twist Krieger.
for length... just as long as possible.. 28" is good, if you can get 30" then go for it.

I take it the HV means heavy varmint? What about the barrel heating up? I forgot to mention this match is a timed relay of 20 rounds plus sighters...

 

[dansig]

30 rounds in 30 minutes is ok, if you want more cooling then have the barrel fluted, I did with my .308 and it's still cool after 50 rounds of constant fire.

 

[fdshuster]

cocopuff: You gotta make up your mind, F-Class match's are all shot from the prone position, laying on the ground = one type of stock. Completely different from successful benchrest shooting that requires a completely different type of stock.

Yes, I've tried mixing them up and it does not work.

An 8 twist in 6BR chambering will be legal in F-Open, but not in F/TR that requires a 223 or 308 cartridge.
That of course applies to NRA sanctioned match's, local club match's will depend on each clubs rules.

dmoran said it all: more specifics.

 

[Forum Boss]

go with the HV contour, as long as you don't plan on shooting from a standing position.
7.5 or 8 twist Krieger. for length... just as long as possible.. 28" is good, if you can get 30" then go for it.

No -- Don't get a 1:7.5" twist unless you're trying to run 115s, which I do NOT suggest in the standard 6BR Case. As for length, I've found that a 27-28" balances quite a bit better if you're running an HV contour. Also I noticed an improvement in bbl stiffness with a 27" vs. 30". Our field tests (using barrel cut in 1") increments, showed that the extra 2" will only get you about 16 fps from a 6BR. That said, some guys are running 30-inchers on 6BRs and Dashers, but I think most people are running 28". The longer tube does give you the ability to set-back the barrel and still be around 27".

 

[savagedasher]

Hi longer barrels also in a Dasher lets you use slower burning powder with same speed i have 2 Krieger 30'' one 8''twist i used varget to start 6200psi the throat wore.015in 600 rds 7 1/2'' i used H4350 the throat wear didn't happen same 6200 psi but faster also then varget 7 1/2 shoots better in the wind at 475 to 1000 yds with Berger 105 Hybrid just some of my shootingi wold like the thought on throat were Good shooting Larry

 

[cocopuff]

cocopuff: You gotta make up your mind, F-Class match's are all shot from the prone position, laying on the ground = one type of stock. Completely different from successful benchrest shooting that requires a completely different type of stock.

Yes, I've tried mixing them up and it does not work.

An 8 twist in 6BR chambering will be legal in F-Open, but not in F/TR that requires a 223 or 308 cartridge.
That of course applies to NRA sanctioned match's, local club match's will depend on each clubs rules.

dmoran said it all: more specifics.

At this club they are letting about any caliber compete..Either prone or bench...I use the bench due to having broke my back in 1975 and it hurts like hell to get into the prone position...I appreciate your reply...John

 

[cocopuff]

30 rounds in 30 minutes is ok, if you want more cooling then have the barrel fluted, I did with my .308 and it's still cool after 50 rounds of constant fire.

I notice some of the BR guys are running heavy barrels..Like a bull barrel and even their barrel got pretty woarm I thought...Even the ones shooting the 223's are using bull barrels..Maybe it is due more to the weight than anything else..I know I can hold my bull barrel 22-250 better since I installed the 26 inch straight bull on it..

 

[dansig]

with barrels heavier than the HV contour you have to cut weight somwhere else if you are going for the 13.5 pounds, in F-class the weight limit is higher so you have the option to use a straight barrel.. it doesn't shoot any better than the HV barrels, it retains heat longer even if it takes a few more shots to heat up it needs longer time to cool down.

with a straight barrer the gun becomes very front heavy and you must add wight to the butt stock to level it.. that will cut into the weight you are limited to...

 

[fdshuster]

cocopuff: I have the same problem: cannot lay in the prone position because of neck & lower back pain, so benchrest is now the only option, other than off-hand. If you're going to be shooting from the bench, then go for a dedicated benchrest stock. Wide 3" flat forend, underside of buttstock close to being parallel with the bore centerline, no cheekpiece, etc. Checkout Kelbly's website for some ideas about a dedicated benchrest stock.

All my match competition barrels are heavy varmint, straight taper with muzzle diameters from .900" to .960". Heat is never a factor. if the club(s) have no weight restrictions, weight is your friend.

A custom barrel 6BR with an 8 twist would meet all your needs out to around 600 yards.

 

[Steve Blair]

At the risk of contradicting Frank and our Forum Boss, I shoot an 8" twist, 30" HV contour 6BR in a Viper SS action and Shehane Tracker stock. It has a NF BR 12-42 on it and weighs 18 pounds. It will make 17 pounds with a Weaver or Leupold 36. I have used it in F-Class (both Mid and Long Range) and in a Varmint Silhouette match at Pala. The VS guys at Pala are all benchrest shooters with rifles very much as Paul described. It more than held its own at Pala, athough I did shoot from prone while the other guys shot from benches. The little Viper took that match by a point. Granted, this is not a game of high precision but accuracy certainly helps. I have never tried shooting it in a 600 yard BR match but the rifle will agg five 5-shot groups under .200" at 100 with 105 Hybrids and holds vertical very well, so it should be at least competitive.

 

[fdshuster]

Steve: No contradiction there. As I mentioned "weight is your friend", and since the original poster indicated he would be involved in local club match's, where there are little or no weight limitations (within reason of course, a 60# rail gun would be "frowned" upon), he should take advantage of big, fat, heavyweight barrels, benchrest stocks, etc.
Another reason the 2 1/4# NF scopes are so often the first choice, where weight does not matter.

My son competes in F-Class F/TR & both his 223 & 308 are up to the maximum limits, within a couple ounces.

 

[GSPV]

IMHO, there are two ways to approach the "club match" issue.

1. Build the rifle to win in the club match. Heaviest, most stable, etc.

2. Build the rifle to be versatile. Build it so that it can later be sold or be used in sanctioned matches.

Another thing to consider is that club match rules are prone to change. I have a Savage that is now something of a safe queen. I built it to the club rules of the time that required factory actions, stocks, etc. By the time the next season rolled around, my full-race custom was legal and the Savage was redundant.

Sometimes club rules change to edge out someone that is winning. I cleaned up for several years at a Friday-after-Thanksgiving skeet shoot in my home town when back visiting family. The next year, that shoot wasn't on the schedule any more.

 

[fdshuster]

Greg: No argument there. I've seen, or heard of it happening (rule "changes") at times, and many times these match's fold up and are "gone", because of lack of participation.

We are fortunate at our local match's since the clubs have a lot of cross membership, basically all follow the same rules, match's are scheduled to minimize any conflict of dates., etc.

Switch-barrels can make a rifle a lot more versatile: remove the weight system in the buttstock, change from a heavy varmint contour barrel to a shorter light varmint contour, swap that 2 1/4# NF BR scope for a Leupold Comp. Series, etc. etc. Exactly as you said in point 2, and all part of the game.

 

[Forum Boss]

Re Sleepygator's comments -- I don't think there's any contradiction. The 30" can work fine. I was simply saying that our barrel cut-down tests showed that going from 28" to 30" adds less than 20 fps in a 6BR shooting 105-108s, and it makes the gun more nose-heavy. 30" bbls also tend to be a bit more expensive than a blank that finishes at 28" (but not always). As I noted if you start with 30" you have the option of setting back the barrel at some point and still having 27".

 

[Jim See]

If you want to shoot BR matches under 17 lbs and still have a competative f-Open gun, it is very doable with a 6br in an F-O stock.

http://www.centershotrifles.com/gallery/miscellaneous.php
thats Ryan Pierce with a range record @600 yards, worked over remy in a McMillian f-class stock.
The same year I won the WI midrange f-open state championship with a 1589-90x with the same gun.
The following year I had a very good chance of beating Ryans BR record but I shot it on the wrong target :'(

 

[cocopuff]

All very interesting reading and I appreciate it very very much...Thanks