New 6mmbr

JonathanK

New member
I am building a 6mmbr 1/8 twist for F-Class and and longrange benchrest. Its now time for me to start ordering components for it. I plan on buying a Redding Fl bushing sizing die, I have a 266 bushing already (which I have heard will work, but not sure), Wilson seating die (not sure if this will work with 105 or 108 bergers seated wayout), lapua brass that I wasnt planning on neck turning but I can if this will improve accuracy, and wolf sr primers that I hope will work with the BR, as Ive heard mixed reviews about these with a PPC.
 
Free advice. Two things that I think are of paramount importance, take it for what'cha paid for it. :)

Nummah one; make your chamber fit your full length die..... or vicey varsey. If you already have the Redding FL bushing die then have PPG make a reamer from it. Assuming that you DON'T already have the die....... then just get the gun built, fuh'GEDDAbout the Redding mess and call The Bros. Harrell. >> http://www.harrellsprec.com/ << Get a fitted die for under 80 bucks and be RIGHT. You are all set with the Wilson seater, ALL you need, and as good as it gets...... learn to use it and spend no more money on seating stuff. Remember, every Wilson is a micrometer top seater. Forty thou/turn.

Nummah Dos; Have your gunsmith chamber SHORT.... this is the single biggest mistake made by BR builders. They slop the chambers in like 'twere a hunting rifle. T'aint.... it's an accuracy platform. Have your gunsmith chamber for a crush-fit on your factory Lapua brass.

Achieve a properly short chamber and proper die fittage and the gun will shoot beyond your wildest dreams......


Ohhhh, and Number Three...... ask lots of questions, there is a real learning curve but worth it.


Ohhh Yeahhh, and Numero Quattro..... Merry Christmas! :)

al
 
I like to ask questions! LOL!! Really there are some great folks here, and on 6mm br. Read as much as you can. and ask away. I read so much i forget most of what i have read. I try to process way to much at one time and get overwhelmed. This is definitely a learning sport. And one that you will still be learning new things after years of doing, so i have been told. Merry X-mas everyone. My little girls are pumped and that makes me happy!!! Lee
 
Redding bushing

The reamer neck diameter is 272 and a loaded round is 269 according to my gunsmith. Im thinking that a .269 or .270 bushing will work, but not sure because in my PPC I have a .269 neck and a .266 bushing is perfect. With that thinking .003 down from chamber neck diameter would put me at .269 which is the same as a loaded round.
 
Thanks

Your bushing should be .002 to .003 smaller than you loaded round.

So that would put me at .266 or .267 with the info from my gunsmith using Lapua brass and Sierra 107s. I will be using Berger 105 and 108s hopefully they will measure the same beacause I dont have the brass or bullets yet to make my own measurements.
 
With my no turn 6 BR barrels I use a 0.271 neck on the reamer.

Fit is good with Berger bullets and Lapua brass. Your 0.272 should be OK.

However I can tell a difference on my better rifles when I use the 0.262 neck and turn the brass for 0.0085 wall. There is a slight gain. Hard to see with out a real precision rifle.

Most of the time I use the Redding dies. I have the Wilson dies for most caliburs but they are slower to use and I see no gain. Some will say the Wilson dies have an advantage. Maybe so but I am not good enough to see the difference.
 
Back
Top