6 BR free bore question using Wilson bushing dies

[urbanrifleman]

Just get a 12 and be safe.

 

[gunsandgunsmithing]

Thanks for the advice. I was thinking 0 free bore with the light target bullets, is what I needed.

I have 1 more question rate with a 16" to 17" barrel. And I think I have my answer. But, advice from here is almost always, good advice.
I have asked barrel and bullet makers, and their advice is 50/50.
It will probably be 17" long. Is a 13 twist the best choice. Because of velocity loss from shorter barrel?

Bill, I've done lots of 6BR's on 14 twist barrels and shot up to 74gr bergers from them, as short as 19" on a rifle. All were great shooters! I think you'd be just fine with a 14. A 13.5 should be safer and a 13, a tad overkill, IMHO. That said, a 12 will be more flexible if you ever wish to try a bit heavier bullets, and I'm not sure it leaves any accuracy on the table, vs the slightly slower twists. If you do a zero fb and a 12, you could at least play with bullets up to around 80 grains and throat it longer, later, if you decide to optimize things.

BTW, is this the rimfire Bill Pippen?--Mike Ezell

 

[urbanrifleman]

I LOVE my 13.5 Kreiger zero freebore. LOVE IT!!!