6BRA load data
- Thread starter Alex Wheeler
- Start date
So here is that 1K ladder I mentioned I was going to shoot in the earlier post. Eight shots from four loads into 3.3”. Due to work and wind, I was out of time to further develop and identify tune windows so I picked the middle and shot that load in IBS Nationals. I finished fairly well but now I will continue to test and see how good it gets.
Roy says these 106’s are no longer available but the 103 A should tune quite similarly.
This is with a Hawk Hill barrel.
Dave.
I'm a little late to this party but I figured I would share what I've had success with this past season. Certainly enjoyed reading what everyone else has been having luck with!
I think I've been doing things a little differently but the same in a lot of ways.... if that makes any sense lol
I've been shooting a 6bra 268 nk, Krieger 237 4 groove, bore rider throat, bat 3l action, Wheeler lrb plywood stock, berger 105 VLDs well sorted, h4895 31.3-31.5gr depending what time of the season, hbn treated necks and bore, annealing each time, sonic cleaning each time, tumbling each time.
I really think that its less about finding the "magic recipe" and more about finding the most reliable and repeatable total ammunition production system. If you find a spot where the rifle will consistently produce repeatable results around a technique that is easily repeated at the loading bench, good things are possible! I like to tune for "forgiveness". If I can find a load that will overlap in a wider powder charge or seating depth, I tend to favor it over the absolute smallest. Sometimes that's hard to do though. Hopefully you get the small ones in the forgiving window. I am a firm believer in sharing information and techniques... after all it comes down to execution. Hopefully this helps some! I love talking about it, pondering, and testing! I'm already looking forward to next season and what I would like to work on over the off season.
James Bradley
I think I've been doing things a little differently but the same in a lot of ways.... if that makes any sense lol
I've been shooting a 6bra 268 nk, Krieger 237 4 groove, bore rider throat, bat 3l action, Wheeler lrb plywood stock, berger 105 VLDs well sorted, h4895 31.3-31.5gr depending what time of the season, hbn treated necks and bore, annealing each time, sonic cleaning each time, tumbling each time.
I really think that its less about finding the "magic recipe" and more about finding the most reliable and repeatable total ammunition production system. If you find a spot where the rifle will consistently produce repeatable results around a technique that is easily repeated at the loading bench, good things are possible! I like to tune for "forgiveness". If I can find a load that will overlap in a wider powder charge or seating depth, I tend to favor it over the absolute smallest. Sometimes that's hard to do though. Hopefully you get the small ones in the forgiving window. I am a firm believer in sharing information and techniques... after all it comes down to execution. Hopefully this helps some! I love talking about it, pondering, and testing! I'm already looking forward to next season and what I would like to work on over the off season.
James Bradley
Guess I’m the oddball or odd man out as I’ve stayed with using Varget in my 6BRAI and only shooting 31.0 grains with 103 grain bullets.
Just this morning I decided to revisit my seating depth tune as somehow I had the wrong data wrote down.
I loaded up 3 each of the above charge at 1.844, 1.841, 1.838, and 1.835
I decided to test at 300 so I could easily hold my POA tighter since I was just doing the 3 shots.
So after putting 6 rounds down the barrel to foul it I started with the 1.844 load definitely didn’t like what I saw so I decided to shoot the 1.835 load (original tuned load) and it wadded them up in a .258 group so I called it quits right there. I didn’t see the need to waste Bullets and powder for the next 2 sets.
Here’s what it shot this morning.
1.844 seating depth
1.835 seating depth
Just this morning I decided to revisit my seating depth tune as somehow I had the wrong data wrote down.
I loaded up 3 each of the above charge at 1.844, 1.841, 1.838, and 1.835
I decided to test at 300 so I could easily hold my POA tighter since I was just doing the 3 shots.
So after putting 6 rounds down the barrel to foul it I started with the 1.844 load definitely didn’t like what I saw so I decided to shoot the 1.835 load (original tuned load) and it wadded them up in a .258 group so I called it quits right there. I didn’t see the need to waste Bullets and powder for the next 2 sets.
Here’s what it shot this morning.
1.844 seating depth
1.835 seating depth
Those were shot this weekend at a 600 yard match at Vapor Trail. The targets tally up to a 1.865 2 Gun Agg (8 Targets). The load was 30.6 of H4895, 450CCI Primers, 103 Hammers seated .006 into the rifling. Lederer barrel, DS Bat action, Scarbourgh stock, jewell trigger, topped off with a massive 40MM 12x52 Valdada Terminator!
Bart
Do you know what speed you were at?
2960 to 2970!
dogdude
Egan O'Brien
@BartsBullets, Great shooting Bart ! Gotta like a guy that gives up the Full equipment list..very informative!!
Jewell
Terry O
Gold $$ Contributor
Is this a different bullet than your 105 Hammers?
Long story short! One of my good friends wanted something different and he asked me to make him some 103s this winter. It was a large batch for one person, and he’s not been shooting a lot. I kept some for myself encase he thought there could be something wrong with the batch.
I personally don’t feel they are any better or any worse then the 105s. However things tend to take on a life of their own. The first thing that made them highly desired, is only myself and one other person has them! Next I said I wasn’t going to make anymore! Third I’ve shot them well! I’ve set two possible records, Won seven 2 guns and racked up over 200 Shooter of the Year points with them. So the combination of success and being unobtainable has in a short time elevated them to mythical status!
Bart
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urbanrifleman
Site $$ Sponsor
take my money
JohnMill
Gold $$ Contributor
So Bart, does that mean you will make some more?. Askin' for a friend. heh heh.
Oh Yeah! You gotta give them what they want! I’m making a batch right now so if anyone wants some let me know!
Bart
tom
Gold $$ Contributor
urbanrifleman
Site $$ Sponsor
I got over 3000 with a Berger 108 moly and never hit any pressure. Shoots the 2950 node without even breathing hard. Shot very tiny at 2875, very tiny 2950, and 3025 wasn't bad. Wasn't bad between those velocities. As far as accuracy... I have no idea what you are talking about. The day I shot it was BLASTING from 6 to 7. Probably 10-15 mph and all the groups were right around 1/4 inch.
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