6Br- 112gr Match Burner with H4350?

[Dale264]

Due to limited resources I will be tinkering with the 112gr match burner in my 24" 6br. The ONLY powder I have is H4350. From what I've seen 31.5-32.5+gr might be the sweet spot. Has anyone messed with this combo? I'm looking for practical/prs type accuracy so 0.5-0.75" is the target.

 

[ncboiler]

Hoping you get some answers on this as well. Interested.

 

[Dale264]

Hoping you get some answers on this as well. Interested.

32.5gr fills my lapua brass right the the shoulder/neck junction. My new barrel should be arriving in the next week or two so I'll be trying this out regardless. I'll be sure to post my results.

 

[Dale264]

112gr MB on the left and 105 Match Burner on the right for comparison.

 

[johara1]

Never in a 6 br case but I did it with a 6br imp case with a 110 SMK and a 110A tip with H4350 and it shot good at 2920..... jim

 

[xswanted]

Absolutely should be a good combo.

I’ve ran H4350 and 107 sierras in my Dasher with great success. I think it’s harder on the throat though.
Edited this.

Current barrel is at 1500ish rounds and I had to seat bullets out quite a ways to jump .020

First barrel ran mainly Varget and it went to about 1800 before seating depth was changed.

 

[Dale264]

Finally got this combo to the range yesterday. Sadly it did not perform in my barrel. I ran from 31.6-33gr and had no pressure signes to speak of. 33 showed a hint of promise but I likely will not be pursuing this any further for this barrel.

24" 8twist 3r Remage Preferred Barrel Blank

This barrel has shot groups in the .1s, .2s, and .3s.

 

[urbanrifleman]

Finally got this combo to the range yesterday. Sadly it did not perform in my barrel. I ran from 31.6-33gr and had no pressure signes to speak of. 33 showed a hint of promise but I likely will not be pursuing this any further for this barrel.

24" 8twist 3r Remage Preferred Barrel Blank View attachment 1248931

This barrel has shot groups in the .1s, .2s, and .3s.

What distance is that?

 

[Dale264]

What distance is that?

100yd

 

[urbanrifleman]

100yd

8 twist?

 

[abersfelderami]

Something is loose.

 

[js2013]

What bullet/powder combo did you use to shoot in the .1s and .2s?

 

[Dale264]

Something is loose.

Nope. Started the day with small groups and ended it the same way with a good shooting load. I would have thought the same thing had I not ended the day with small groups.

What bullet/powder combo did you use to shoot in the .1s and .2s?

Varget and pretty much any bullet from 55-105gr. I was hoping I could get 4350 to work since I have more than a full pound of that. Would like to try those 112s with varget as well to see if those were the issue.

8 twist?

Yes, I suspect this was a contributing factor with those 112s.

 

[urbanrifleman]

I think the low velocity combined with the 8 twist might be very borderline for getting those long bullets to stabilize.

 

[AckleymanII]

8 will not cut it

 

[SecondsCount]

H4350 seems a little slow for 6BR. I would try some Varget or RL15.

I shot the 112 MB in my 28" 8 twist 6BR. They stabilized well but were slow, 2620 FPS, with 28.5 grains of Shooters World Precision.

My Kestrel showed a -700 DA where I was shooting down in Southern Alabama. I was hitting a 4" circle at 645 yards but things seemed to fall apart after that when trying for 800 and 1K. My spotter was a newbie so it wasn't easy to get a definitive answer.

Sighting in, 100 yard, 5 shot group, shooting on a rickety bench, Harris bipod and rear bag.



This gun shoots the 105RDF like a laser so I am going to stick with that.