6 BR bushings size

[eddywitay]

I was wondering if any one can help me out with what the right size bushind I need for my neck die i am using lapua brass no turn neck neck 6pm BR

 

[fdshuster]

"Old" Lapua with .0135" neck walls or "new" Lapua in the blue plastic box with neck walls that are averaging .0125"? For my .272" no turn necks, old brass I am using the .268" bushing. For the new blue box I use a .266". But, it's nice to also have one size smaller & one size larger.

 

[expiper]

fdshuster... are you using Redding bushings???,,,,,Roger

 

[fdshuster]

Roger: Yes, the plain steel at about $12 each, gives me a larger selection of sizes for less cost.

 

[expiper]

fd,,,they are just as good as the titanium peroxide ones and cost 1/2 as much....wink..thanks for the input...Roger

 

[25AI260]

?
Guys... while your talking bushings.. i tried as a 'experiment': - putting a .268 bushing in my reeding 30br S- neck die.. the 6br case doesn't want go into the die. well lets say i didn't want to force it to much. ... now i've see the cartridge diagram for the 6br but haven't found one for the 30br anywhere... is it that much different... should/could the 6br case go in ?

 

[fdshuster]

RichG: Same problem I had when I tried to neck down my 6BR brass for a newly chambered 22BR. Initially a lot of resistance ( that should have been a clue right there, but I'm a slow learner), so I went ahead and made use of the Rockchucker & destroyed a new piece of Lapua 6BR brass. Finally woke up & saw where the mouth of the case was hitting the flat on the bushing. Smashed the neck down like an accordian. Bought a 22BR one piece FL sizing die & now use it to initially form my 22BR brass.

 

[hogpatrol]

My 6BR chamber has a .271 neck. My loaded rounds are .269. I use a .267 bushing in a Redding competition neck sizing die. Am getting excellent accuracy with this setup. Springback is less than .001 with blue plastic box Lapua brass. HP

 

[eddywitay]

fdshuster: it is the new brass in the blue box i was told by the guys at sinclair to go with a .264 or .265 with this brass i have a .264 and i will measure the loaded rounds but i just want to have every thing when ready when the gun is done. does that bushing size sound too small.

 

[skeetlee]

.264 sounds like a lot but maybe not. i wouldnt use that much but thats me. About thje bushings. I wouldnt recomend the steel bushings. i have read several articals were run out was more apperant with the steel bushing compared to titaniam. Dont spend 2 grand on a rifle and then save 10 bucks on a dam bushing for your die. kinda silly really! If it works though i guess theres no need to fix it. I measured my run out while using steel bushings in my ppc and sure enough there was run out. I switched to titanium and the run out went away. Thats all i know. Lee

 

[expiper]

eddy,,,I hav used a .265 wilson with paper box brass for several yrs....since the new blue box stuff is a lil thinner....try a .264 .....take some measurements.....bushings are different from type to brand.....you just hav to see what works with your stuff...Roger

 

[eddywitay]

skeetlee: that makes a lot of sense about the titaniam coated bushing.spend all the money on a good gun than cheep out on something like a 25 doller bushing

 

[eddywitay]

expiper: thanks for the post all the bushing sizes that everyone uses is all diff. gess i will mesaure my loaded rounds to get the size for sure .can you ues a good set of dial cal. of should you use a mic.

 

[hogpatrol]

eddy, what size is the chamber neck of your gun? That dimension comes in to play when determining the bushing size needed. If you squeeze the neck down to .264 with a .272 chamber you'll be working the neck brass hard and reducing its useful life. My loaded rounds are .269, the chamber neck is .271 and I use a .267 bushing.

 

[expiper]

your welcome...eddy....no matter what is stamped on the bushing ...masure the neck with your dial calipers as it comes out of the die....it should be .002 smaller than when loaded with a bullet....that way you have .002 squeezz on the bullet....any less and you are flitrting with uneven tension and seating depth variations....no matter what the neck dia of your chamber ...you gotta make the brass hold the bullet!!!!......that is why you want to size the neck aprox. .003 less than loaded dia....which gives you the magic .002 of grip....and remember the wilson bushings are tapered so you can turn them over and get an additional .0005 smaller than with it in there with the numbers up....if using Redding bushings ...you just gotta guess for the rite size and measure evrything to be shure...Roger
PS..when you seat the bullet with your arbor press you can feel the minor dif. with various worn or cracked or over/under sized brass....if I pull on the handle and one feels too loose or tite....set it aside and it usaually will print at a different spot on the target.....I hope to get one of the arbor presses with the bellville washers and lil' dial indicator "some day",,,I think bullet tension is an overlooked aspect of accuracy/SD/ES/etc.....