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Is 31grs of Varget to hot to FF 6BRX??

I just had a 6BRX built and I had some 90gr Bergers that I started to use for fireforming my brass and used 31grs of Varget with those. I then ran out of the 90gr bullets and switched the some 105AMAXs and forgot to drop my powder back a grain to 30grs. Is this going to be a problem??? Thanks guys!!
 
I ran the opposite with 105amax. I did 27.5 of h4895 and shot tiny little bug holes out to 500. I'm sure your fine but if it was me, I'd pull them and redo them.
 
i cant see any problem myself i use 30.5 gr varget cci 450 mag primer 4 or 5 th nk tension &107 sierras 30 in without any problem shoots some nice groups too in winter if i need to form any i use cream of wheat & false shoulder ive found it usally takes 2 firings on my brxs to blow cases out fully with the 2nd firing using my standard range load regards shooter63
 
mike davis started me off with my first 6mmbrx he lives 15 min. from me he started me off fire forming with the above load have never experienced any adverse affects only the occasionally split case the only problem ive ever had was with a rem. action & 205m primers gre tan solved that with bolt bushing so i do think brxs like pressure im shooting 33.7 grains of varget with 450 cci primers& 105 hybrids some 3 shot groups in my initial load developoment can be seen on tommy@ shurley brothers.com so good luck with yours the brx is here for awhile i think as its brothers& sisters regards shooter63
 
Thanks for the replies guys!! I tried some last night and the only thing I noticed over my 30gr Varget load was the primer on the 31gr load had a small burr on it.

I really suck at bench shooting and am not set up for it. I was shooting off a sand bag and a cheap rear bag I use for tactical shooting that is filled with tumbling media to keep the weight down when carring it.

I was using the 105AMAXs with 30 and 31grs of Varget stuck in the lands to fire form the cases and it was shooting in the .6 to .7s for 5 shot groups. I would get two or three in a little cluster then two or three out. Needless to say I wasn't to impressed.

I decided to try the "Free recoil" method I had read about and I couldn't believe how much better the gun shot. The first 4 rounds litterly went into one hole!! Of course I couldn't stand the pressure and pulled the last shot but it was still a .3 group. The second and last group was about the same. The first three were again in nearly the same hole with the 4th and 5th making it a long key hole for a .4 group. SOoo......Now I know the gun wants to shoot I just suck as a shooter!!!HA
 
Raptor said:
Thanks for the replies guys!! I tried some last night and the only thing I noticed over my 30gr Varget load was the primer on the 31gr load had a small burr on it.

I really suck at bench shooting and am not set up for it. I was shooting off a sand bag and a cheap rear bag I use for tactical shooting that is filled with tumbling media to keep the weight down when carring it.

I was using the 105AMAXs with 30 and 31grs of Varget stuck in the lands to fire form the cases and it was shooting in the .6 to .7s for 5 shot groups. I would get two or three in a little cluster then two or three out. Needless to say I wasn't to impressed.

I decided to try the "Free recoil" method I had read about and I couldn't believe how much better the gun shot. The first 4 rounds litterly went into one hole!! Of course I couldn't stand the pressure and pulled the last shot but it was still a .3 group. The second and last group was about the same. The first three were again in nearly the same hole with the 4th and 5th making it a long key hole for a .4 group. SOoo......Now I know the gun wants to shoot I just suck as a shooter!!!HA

That's ridiculous most rifles won't shoot that well FF and many won't shoot that well when load work is done! Obviously you can shoot, the gun can shoot or you can't measure, I would be ecstatic with those results and so would anybody else on this forum, my last 6brx FF load was 29.0 grains of H-4895 and 95 grain speer hot core bullets, I got it on paper and put 47 rounds in .8 and was very pleased with that, it was windy and raining and I was in a hurry so I shot 25 cleaned and finished with the other 25, if yours is shooting that well you really should enter at least a local egg shoot to ff and I wouldn't be scared at all to enter it into a 600 yard BR or F-class shoot. The primers are starting to crater on you with your description so be careful when it gets warm out or you will be piercing them! Best of luck to you.
Wayne.
 
bozo699,
Thank you for the reply. I wasn't trying to be a smart a#* when I said I couldn't shoot or I wasn't happy with the gun. I had read on here where guys were shooting in the .1s and .2s with these rifles at 100yds with their
"Good" loads. Also many were shooting under a half inch fireforming. SOooo.....Thats what I was basing my statment off of. I honestly didn't think .7 to .8" groups were all that great at 100yds. Then when I let the gun just set there and hardly touch it other than pull the trigger it tightened up the groups a bunch.

I guess why I wasn't to happy with it (At the time) was because I was expecting it to be more "Consistant". However my fist attempt at trying to find a load it likes has worked out well. I found one at 32.6grs of Varget and a 107MK that is shooting very well. the first two groups are in the .3 and low .4 with 7 out of the 10 in a .2 I will keep bumping it up to see what it does so far it does NOT like 33grs. Thanks again for the reply!!
 
Raptor, have you read the above post, the one I gave you the link on.

It may surprise you.

This is where I got the info to FF my brass using 33.5grns of Varget! I lost maybe 5 pieces of brass out of two 100 ct boxes! That's what I usually do, two boxes at a time!

Later, Dennis
 
Dennis,
Yes I did and thank you!! I did enjoy the article and went ahead and fireformed with the 31grs of Varget with no problems at all. I lost one case out of the first 100 that I formed.

I went back to using the 30grs to be on the safe side but I think the accuracy was even better with the 31grs. I am using Federal primers and i do NOT have my firing pin bushed so I was getting some primer spurs and think it may be from not having the pin bushed and not pressure but just to be sure I stayed with the lighter load.
 
Raptor,
I am glad your rifle is shooting so well for you, my sons Savage is shooting 34.5 grains of Varget real well with 205M primers and 107 SMK's but I made him back it off to 33.5 because when preparing for the first match this year I noticed that he had cratering in the primers from out August shoot last year. I read Beckmans article before I ever ff my first case, it's a good article, I think Dennis's load is too hot for at least most rifles and would caution anyone from at least starting there, it is awful hard on the brass at any rate. Dennis is your primer pockets staying tight at those high pressures or are you loosing any prematurely? I am using 29.0 grains of H-4895 but have used other loads including Raptors load with good results, as you know each gun is different, best of shooting to you both ;)
Wayne.
 
Wayne, glad you responded back. I was wondering if I should keep going up on my load with the Varget?? I tried 33grs and it did not shoot well but bumped it to 33.2 or 4 I don't recall which to see if it will shoot better there.

What I was wondering about is the primers. I seem to be getting a small spur on them but no other signs of pressure, such as stiff bolt lift or ejector marks. I am using the CCI 400s but have 450s to try and was wondering if they may have a harder cup. From what I have read I tend to think it may be because I don't have the firing pin bushed.

I am seating the bullet (107SMK) about .012 into the lands and thought I may try backing it out to see what happens next. Wind has been a bear here so it's hard to get to the range.
 
Dennis is your primer pockets staying tight at those high pressures or are you loosing any prematurely?

'Wayne, so far, everything is good! I will keep a sharp eye on everything, but it will tear up a spotter at 600 yds with 33.5grns Varget.

My two friends are using 33.0 grains, same 107 smk, NO problems!

Dennis
 
Wayne,

I have even heard of some going up to 34.0 + with there BRX.

Beckman jamming his bullets .030 is unbelievable with his charge!

I even made the comment that my 6.0x47L doesn't take much more than this, why am I shooting a BRX?

But the BRX is more accurate than my 6.0x47L, can you help me understand this?

Both of my guns are very accurate, FYI

Dennis
 
DennisH said:
Wayne,

I have even heard of some going up to 34.0 + with there BRX.

Beckman jamming his bullets .030 is unbelievable with his charge!

I even made the comment that my 6.0x47L doesn't take much more than this, why am I shooting a BRX?

But the BRX is more accurate than my 6.0x47L, can you help me understand this?

Both of my guns are very accurate, FYI

Dennis

Dennis,
Yes my son's 6BRX shoots 34.5 nicely but of course this is after FF his FF load is 30 grains of Varget behind a 105 speer FB bullet (cheap)

I think the only thing saving his brass must be the heavy jam,...I jam very heavy myself, fdshuster only jams about .012 if I remember correctly and I jam closer to .030, I find I have less miss fires with a heavy jam.

I have no doubt that both your rifles are very accurate.

There are some people I keep my eye out for there names involved in a thread because I enjoy there posts,.....yours is one of those names ;)
Wayne.
 

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