Fat 6mm bullets

On a barrel that I shoot in local gun club matches . When I clean the barrel the patch is really tight and on another gun I have that don't shoot quite as good the patch is really louse in it thought that if I had a bullet that was .0002 or .0003 bigger it may shoot better both Barrels have around 500 rounds through them .
 
Have you tried the big barrel with loads up around 30 to 30.3 of 133. That oftentimes really wakes them up.
 
N133

ArtinNC said:
It is a 6BR with a Broughton Barrel 1:8 twist 28" long .
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would not be a powder of choice for a 6BR imo. What are you shooting for powder and how much? N135, 8208, Norma 201 would be some to try, assuming you are shooting 65 to 68 grain bullets. With the fast twist are you shooting 90-105 gr bullets? If so Varget and other in that slower burning range would be good ones to try. Check bullet makers web sites for diameters. If not shown call or email them.
 
So the bullets you are shooting are 103-5 class ? next what is your free bore? and what is the free bore diameter? those are needed to know for a proper recommendation. Barts are right there on the shank but vary on the pressure ring on different bullets, but I have a .2438 free bore diameter and they all shoot out of it...... jim
 
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glp said:
would not be a powder of choice for a 6BR imo. What are you shooting for powder and how much? N135, 8208, Norma 201 would be some to try, assuming you are shooting 65 to 68 grain bullets. With the fast twist are you shooting 90-105 gr bullets? If so Varget and other in that slower burning range would be good ones to try. Check bullet makers web sites for diameters. If not shown call or email them.
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I* have shot 90 , 95 , and 105, they all shoot about the same , with Varget seems to be the best .. ( 90's Bergers with 31.5 vv540 - RL15 31 gr -30.0 gr Varget ) ( 95 Berger with about the same loads ) (105 Bergers 30.1 RL15 , 30.0vv540 , 31.0 Varget )
 
jim1K said:
So the bullets you are shooting are 103-5 class ? next what is your free bore? and what is the free bore diameter? those are needed to know for a proper recommendation. Barts are right there on the shank but vary on the pressure ring on different bullets, but I have a .2438 free bore diameter and they all shoot out of it...... jim
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lead is .088 , throat .075 , free bore dia is .2434 and a 1deg30. throat tapper is 0.174 long . This is off my drawing from Dave Kiff
 
ArtinNC said:
lead is .088 , throat .075 , free bore dia is .2434 and a 1deg30. throat tapper is 0.174 long . This is off my drawing from Dave Kiff
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I use a .115 to .120 throat and a free bore diameter of .2438, that is way too small what you have. 1.5 degree is normal I have no idea throat taper is, and I never saw that on any of my prints. I would suggest you get a .2438 uni throater fromPTG. and open it up and lengthen the free bore..... jim
 
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Ok here is my reamer dwg , guess I need a throat reamer for the heaver bullets 95 and 105 gr bullets, right If I add the lead.088 and throat .075 together I have .163 .. View attachment 23947
 
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No it is .075 and a total .088.... you are more suited for 80 gr. bullets except your free bore diameter is too tight...... jim
 
That reamer even says made for light bullets but the .200 line measurement is very tight also ...... I think you need a reamer ..... jim
 
jim1K said:
No it is .075 and a total .088.... you are more suited for 80 gr. bullets except your free bore diameter is too tight...... jim
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Yeah I see where the free bore is .088 now and what should it be for 105 gr Berger bullets and free bore diameter ?

Never mind I see what your is on previous post .
 
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artinnc said:
on a barrel that i shoot in local gun club matches . When i clean the barrel the patch is really tight and on another gun i have that don't shoot quite as good the patch is really louse in it thought that if i had a bullet that was .0002 or .0003 bigger it may shoot better both barrels have around 500 rounds through them .
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your looking at wrong things use 244 dia. With 7.5 ojive or 8 made millons yrs ago shot zero grps.
 
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