55g bullet in a 6 BR

[AckleymanII]

A good friend has been hounding me to try the 55g Noslers in my new 6 BR. His load was 35.0g of AA2230 with a 7 1/2 primer at 3900+ fps shooting bug holes.

Well, I ordered a 100 and went to the range to load and try them. The accuracy load in my rifle was 34.0g at 3912 fps and I shot several groups in the 1's, moved to 300 yards and shot two 3/4' groups, and had 7' less drop than my load of 30.2g of Benchmark with the 70g Sierra Blitz King.

My buddy has a 1-14 twist, mine is a 1-12 twist, three groove lilja.

this load is so unique, works in two different rifles, thought that I would report it to the board for the varmint hunters.

For anyone that would want to try this load in their rifle, I would start off at 32.g of AA2230 and go up watching for pressure signs as powder charge increases.

I might add that my chamber has zero freebore, so if you are jumping the bullets, the pressure would go down.

Good luck!

 

[JJH]

I really like the 55, and 58g bullets in my 1-14 douglas BR. I am shooting h322 with great results, and really have had excellent results with many different quicker burning powders. I've pretty much found if it loads well in the 223 it works with my light varmint bullets with the BR.

 

[Ackman]

See? Glad you finally got some chrono numbers. You have a real good lot of 2230. That extra 4' of barrel is maybe giving something also. In my 24'/14twist....55BK
2230 powder

35.0 = 3864
35.5 = 3919 - most accurate, one small hole
36.0 = 3970

Amazing what this cartridge will do with lighter bullets. Shoots the same weight bullet faster and more accurately than the 22-250, using less powder.

 

[EAtts]

I use 55 gr Sierra Blitzkings in my 6 BR with a 1 in 12 Pac Nor barrel. They shoot little wee groups and really turn chucks inside out.

 

[WOLF2]

hi i run a 6br with a 1 in 14 twist and would like to try some AA2230 with the light bullets 55gr 58gr 65gr 70gr.but does any body know if this powder is temperature sensitive.i've tryed h322 with the 58s and only get 3400 fps with 32gr and with h335 33gr get the same, i can up the charge but the groups open up. i've also tryed vv 135 with 70gr bt and get 3300 with 32gr all shoot well but would like a bit more speed.so AA2230 would be a good one try to get the extra speed if its stable in all temperture.

many thanks
wayne.

 

[AckleymanII]

Wayne, there was a pretty good spread where the accuracy was great with the lot number of 2230 that I had, for hotter weather, I would not load the max load that was on the ragged edge, then expect to go shoot p. dogs were my ammo was sitting out in the sun.

I shot BR for quite a while, we always loaded at the range to allow for weather.

 

[WOLF2]

hi keithcandler
thanks for your reply, i use the 6br for shooting foxes mostly at night with a spotlight and in the winter temperature between 5- to 10- and through the summer nights 60+.do you think the AA2230 will remain consistant at that temperature as i dont want to be missing any making them harder to get.3900 fps is more then i get with my .243.very pleased with the 6br i've had over 100 foxes in the 2 1/2 years useing it and the extra speed will take it from good to fantastic.
many thanks
wayne.

 

[RAG]

I'm with Ackman in that I settled on the 55BKs; they simply proved more accurate for me, but as I mentioned in yesterday's thread, I don't like the thought of giving up so much BC to the Noslers. Also, I never tried 2230, I found best accuracy with Benchmark, and best load produced solid velocity - 3,800 fps,23' barrel). I'm going to retire this barrel after I burn the 800 remaining rounds I have loaded, but will try the below-mentioned 2230 combo to see if I can get the Noslers to shoot, and with a littl more velocity. But I wonder if 2230 is a little harder on barrels; I've been happy with Benchmark in that I still shoot bughole groups after 6000 rounds and a couple re-crownings.

 

[AckleymanII]

I went back to the range today with a 6 PPC, 29.5g of AA2230-S shot three groups in the zero's at 100 yds...just slightly opened up a single bullet hole. Bullet used was a 55g Sierra Blitz king jammed .020, gun was a 28' Pac Nor super match, 1-13 twist, .262 neck, zero freebore.

Too bad I don't shoot competition anymore, but I'd rather eat a rat than shoot another registered match.

By the way, benchmark is dirty as heck compared to 2230, I got 10K rounds out of my last 6 PPC shooting 2230 and groups were still in the high three's when I retired the 1+14 twist hart barrel that started off throated for the 68's.

 

[AlNyhus]

Keith: I've been shooting the 55 BTips in my 6BR with 2230 for several years, now @3750-3800 from a 22' barrel. Re7 is another great powder to try with the 55-58's. Ballistically, it's a much better combo than the 50's from a Swift, for example. -Al

 

[AckleymanII]

Al, a freind of mine set a NBRSA record some years ago with H335 with is own 60's out of a 6 BR at 3700 fps.

I had a 22' 6BR at the time that I shot H335 in, and my 65 MEF's would make ground squirrels just disappear! Velocity with the H335 was 3550 out of that short tube, but accuracy was astounding and barrel life was forever. I could shoot 100 rounds, remove the bolt and there would not be a trace of powder fouling in the bore.

Obviously, the AA2230 is faster than H335, and thanks for the confirmation!

Hope all is well with you!

 

[RAG]

Kieth, thanks for the reply. And thanks for the info on 2230 versus...I never really gave 2230 much of a chance, through I did use up 3 kegs of 2200 for my 223 AI...for some reason I remember it being fairly dirty.

Funny on the NBRSA. I'm just a kid by most of yall's standards, but I had Stu Harvey chamber me a 6PPC barrel my Nesika 6BR, and with it, I won the HV 200 and Grand Agg at the only NBRSA match I ever shot,few years ago)..so my memory of the event might be a little fonder than yours, and I figured I'd quit while I was ahead; actually, it was marriage and kid that forced me to quit, but at least I got to go out on top But I too prever to plug varmints over anything else!

Regarding the 55BKs, that's the dilemma I face. They are remarkably accurate,near benchrest accurate), but for field use, would you take 55BKs that consistently shoot in the low 2 yet have a poor BC, or would you choose the 55NBTs that shoot in the mid 3s and 'reportedly' have a much higher BC? Personally, I liked seeing those little holes and thus gravitated toward the BlitzKings, but according to the ballistics, the impact speed would be 150-200fps faster at 'mid-range'.

 

[RAG]

'By the way, benchmark is dirty as heck compared to 2230, I got 10K rounds out of my last 6 PPC shooting 2230 and groups were still in the high three's when I retired the 1+14 twist hart barrel that started off throated for the 68's.'

I am still amazed at how long these tubes will go with chambered in 6PPC/6BR compared with a .243 Win or 6MM Rem! I previously had a 22-250 and a .243 Win that went to hell after 1500 rounds...the 6BR I reference above has pushed over 6,000 'medium-hot' rounds at 3,800 fps,just 23' tube) and still operates in the mid 2s with the 55 Bkings! I keep thinking that it'll be shot out any day now, but maybe I got a couple thousand left in 'er. I keep thinking I'd like to try the 6-6.4x47 in a longer tube to get 4,000fps, but I'm afraid barrel life might be short...and I shoot too many rats for that.

 

[AckleymanII]

Rag, the 55's are shooting a WHOLE lot better than 3's in my guns and are going 3900 fps+ in the 6BR, have yet to check the speed in the 6 PPC.

A couple of hundred fps makes up for a whole lot of BC out to 350 yards or a tad further.

I'm really a critter shooter, so splat factor is way up there for me. Also, not shooting over and under a critter all the time is way more important than wind drift at the distances that I shoot.

Benchmark burns a lot dirtier than AA2230 once you get the 2230 up there in pressure, like all ball powders.

 

[RAG]

Splat factor is huge for me. What length tube are you running to get 3,900FPS? I'm thinking I'm going to try a 28' or 30' barrel on my 'Ultra HV' setup,stock filled with led/resin mixture), and am also considering chambering in Dasher...I would speculate that pushing the 55s 4050 would be no problem, which should provide plenty of splat factor on the squirrels! Should still have triple the barrel life of a .243AI too.

 

[AckleymanII]

RAG, I used Ackman's reamer on my Lilja three groove 12 twist barrel. Look at Ackman's stats, his barrel is 24' long.

Some years ago, I made 50, 55, 60, and 62g Bullets on the short jacket, they all shot very tiny groups and splat factor was huge.

If you have a 24' barrel, you could count on getting 3900 out of the 55's, plug in the numbers in a ballistic's table, they are impressive.

 

[12man]

Presently shooting a 1-10 twist Lilja shoots everything real good& haven't noticed it to be finicky.95 BIBS are awesome, 80 Bergers & 80 Nosler B/T & 75 Vmax & 65 Vmax shot almost as good. Just got some 80 Fowler's. The lowest weight I've shot so far are the 65 VMax, anybody shot the 55 Nosler out of a 1-10 or 1-8 twist? The Nosler 55 B/T should be varmint nightmares

 

[AckleymanII]

12Man, I shot the 55's out of a 10 twist 6 Rem at 4000 and accuracy was in the mid to high twos, mauser action, 6-20 Leupold.

You should do great with the 55's.

Good luck!

 

[12man]

Thanks for the input Keith, A loading I go

 

[Phil]

OK.......Now that we have confirmed that the 55`s will shoot.....

What are some details on the loads that you guy`s are using as favorites?????????

Powder/charge???

Primer???

Velocity???

Like most people i have only used 75`s and 87`s in my 10 twist 6mmbr but i`m looking hard at the 55`s...if they show promise in a 10 tw. barrel i will be adding a 14 twist to the safe.....


Thanks,

Phil.