The bane of CyaN1de: Birth of the 6BR - "BC Roll": *new 100m group on last page

It better work through the bump die, coz I'm not going outside to grab that 50 lb beast in the middle of the night :D

(alternate ending to this story: may end up pulling 20 bullets :mad:)
 
Gee thanks guys :rolleyes:

Nice groups btw. That tiny bit of vertical could be 1,000,000 variables but shooting VLDs in the .3s is great. I have done a .093 group and during a match got as little as .271. The 6mmBR looks better on paper once you get to 600 yards. Not that I am the expert on the subject, but at 100 yards the true tale is not really told IMO.

As far as the comment on the color goes, its just a jest. Purple is definitely not my color tho. I am starting to really like color on rifles now. Not too long ago I was shocked by anything other than black.
 
Nice groups btw. That tiny bit of vertical could be 1,000,000 variables but shooting VLDs in the .3s is great. I have done a .093 group and during a match got as little as .271. The 6mmBR looks better on paper once you get to 600 yards. Not that I am the expert on the subject, but at 100 yards the true tale is not really told IMO.

As far as the comment on the color goes, its just a jest. Purple is definitely not my color tho. I am starting to really like color on rifles now. Not too long ago I was shocked by anything other than black.

Definitely need more practice at the range, admittedly I haven't shot much centrefire this year. I'll be going up later again after the England match.

No offense taken at the colour comment, and bartell is just jealous. ;) I was looking for a standout, unique look, and I think Robertson did an excellent job with it.
 
rishu_pepper;4550161I said:
was looking for a standout, unique look, and I think Robertson did an excellent job with it.

Doesn't he always do a great job?

I just like building my own stocks or I would have them on my rifles too. Nice.

Do your best to tune out that vertical - I am sure you will next time out.

For F class, vertical is really bad. I tune for the flattest groups I can get.

Sometimes, the group size is not as spectacular (flat and a bit wide but in the 2's) but that doesn't matter as I am only concerned about holding that V bull.

Enjoy...

Jerry
 
300 yds !!

I will be out at Mission tomorrow in the AM , bring it out and give it a try at 300 , i will put up a copy of the new 300 F target with the regulation V-Bull ,shoot from prone, throw in a little wind and then we will see how your groups are :D
 
So Jerry, by tuning for a flat group, do you mean just finding a load that has the least vertical?

Sorry Machinist, tomorrow is no good for me, I would have loved to come out though. Maybe next week. I'm gonna hit PoCo again later today.
 
Thanks for the great review of the stock. We were a bit late on delivery of this one (and a few others!!). We have a new GM doing scheduling now and getting things on track. Our deliveries are already better and getting better still.

Looks like it will be a V whacker for sure!
 
Brian, it does not matter if the groups are vertical or horizontal as long as they are tight. You are off to a great start and I know that with seating depth adjustment, that group will bug-hole.
 
Thanks for the great review of the stock. We were a bit late on delivery of this one (and a few others!!). We have a new GM doing scheduling now and getting things on track. Our deliveries are already better and getting better still.

Looks like it will be a V whacker for sure!

Stock's working that's for sure! Thanks Ian!

Brian, it does not matter if the groups are vertical or horizontal as long as they are tight. You are off to a great start and I know that with seating depth adjustment, that group will bug-hole.

That's true I guess.

I went out again today and shot some of the 1F brass loads, and further jammed them out a few more thou's as Richard suggested. I managed to improve and got a group of .560-.243 = .317 (5 shots at 100). Another group started off well from the first 4 shots but I pulled the last one, otherwise it would have been in the low .2's. :mad:

Also shot a couple 5-shot groups at 200, .5 MOA, nothing to brag about for now. First time this gun went to 200, hopefully stretch it out to 300 next time at Mission.
 
So Jerry, by tuning for a flat group, do you mean just finding a load that has the least vertical?

Yes, I want as little vertical as possible.

I find that as you work around the high accuracy node, the groups will have some vertical (like what you got in your pic - vertical football), then go flatter (sideways football), then go vertical and rapidly expand in group size usually accompanied by pressure signs.

I call this clocking. The groups seem to rotate around the center like the arms of a clock. And yes, it is repeatable.

I have repeated this so many times with a variety of rifles and chamberings, I consider it a viable tuning method.

The group size does not change, just the orientation. I can get a group that is 1/4 min wide but pretty much no vertical at 200yds. I have shot 300m groups that were all in a line - doesn't happen all the time but neat to see when it does.

Just shot a 4rds group to confirm the load that shot so well for me at Kamloops a couple of weekends ago. Conditions had a slight gusting wind and I held in the same place on target, the group was 1/2" tall X 1 3/4" wide.

Not bad for 500m and one wind flag :dancingbanana:

I tune by varying the powder increments by 0.1gr (must use a very precise scale). I don't play with seating depths and I shoot Berger 6.5 140gr VLD's OFF the lands.

Works for me....YMMV

Jerry
 
Thanks for the info Jerry.

You know, the 31.2gr with 18 thou jammed seem to work so well for me that I think I'll quit tinkering for now and just get shootin'! Even though today's groups were better than yesterday's, I still need a lot of practice to bring out the true capacity of this rifle.

Met up with Richard earlier tonight at Timmy's, dude wanted some H4831sc so I made a straight swap for his Varget ;) Can't go wrong with more Varget :D

BTW, Jerry, do you have any of the 105gr Berger Hunting VLDs in stock? Looking to get some boxes if you do.
 
Thanks again for the 4831 Brian.....your a life saver!!! Too bad we couldn't have made it in early enough to see that bad boy in action.

Was good to see you again and more importantly, I look forward to seeing you hand everyone their asses on platters in the coming year or 2. ;) ;)
 
Brian: Mission on the 27th... a one-day match. Betcha a beer a point?

Not sure if I can make a Sunday match, what with church and all. I'll see what I can do.

So the winner gets beer or what? R:d:

Thanks again for the 4831 Brian.....your a life saver!!! Too bad we couldn't have made it in early enough to see that bad boy in action.

Was good to see you again and more importantly, I look forward to seeing you hand everyone their asses on platters in the coming year or 2. ;) ;)

No problem, I'm gonna enjoy having 3 more pounds of Varget too.

As far as handing certain asses of certain people on certain platters, this shooting will need a lot of practice before it'll happen, but I aim to practice lot. Maybe one day all the stars will align and I'll make something of myself; in the meantime, I just hope I can beat Cassidy. :redface:
 
So Jerry, by tuning for a flat group, do you mean just finding a load that has the least vertical?

Sorry Machinist, tomorrow is no good for me, I would have loved to come out though. Maybe next week. I'm gonna hit PoCo again later today.

Here's a good article on stringing.

http://www.6mmbr.com/verticaltips.html

LOAD TUNING

• Find the Sweet Spot--A load that is too light or too heavy can cause vertical problems. When you've tuned the load right, you should see a reduction in vertical. Even 0.1 grain may make a difference, as will small changes in seating depth.
 
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