bushing bolt

T

Tod Soeby

New member
I am going to rebarrel my 700 SA from a dasher (the exploding gun) to something with a little more boiler room.......6MM rem/6-284/6Rem AI/243AI.....something......not sure yet. I have had the bolt bushed for the dasher. Will this be a hinderance to a larger case?

Also.....236 or 237 bore? If I go off the shelf I may not have a choice in bore size, but , maybe get lucky.

Any one else have a pet/favorite 6mm?
 
Tod, you'll have to explain your logic :)

Bushing the bolt is done to lessen bolt slap, it has no effect other than to center up the bolt body.

Bushing the firing pin is done to allow you to run higher pressures without blanking primers. It has no negative side effects.

The chambering I use is the 6X47 Lapua

al
 
Tod Soeby said:
Any one else have a pet/favorite 6mm?
Click to expand...
Sure. A number of us old-timers like the 6AI. 3250 with about 47 grains of H4831 behind a 105-grain (range) bullet. You can get maybe another 100 fps with Rel-22, but it never was quite as accurate for me as the 4831. Great powder, rivals 4350 in delivering consistent shots.

Velocity will start to drop after about 500 rounds, but accuracy is often there for another 200 rounds.

The big 6mms are the 6/284 and the 6/06. Bill Shehane got to the Silver level of the Long Range Marksman program with the 6/284. The Cass brothers use to push their 6/06 to 3,500+ with 107 Sierras.

Cheechaco & I, & once apon a time Jim Borden, being more modest fellows, fell in love with the 6 Ackley. Jim Called it a "big PPC." To be fair, I think he later decided the .243 AI was OK, with better brass more easily available. But there is nothing wrong with Winchester brass. If you like to spend money, get RWS 7x57 brass, and start from there.

People keep talking about barrel life. Unless your program is different, you shoot 5 LG rounds for record, every match. Say another 5 for sighters. And while we're sayin' things, say you win every relay for either group or score; that's another 10 rounds for the shootoff; 20 rounds a match if you win everything is sight. 200 rounds a year. Your barrel's gone in two, three years. Longer, if you win less--And who wins every time out? If you do, a new barrel seems like a small enough thing.
 
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Well ther you hav it...from a man that has shot em a bunch....they are teriffic but short lived.....under 1000rds usually.....its a choice you gottta make....the 243 is about the same (as you and everybody else knows!!)....I am a titewad and would stik it out with the BR and its wildcat children....that is what is settin lots of records and winning more than its share...(ooo yea I know there are lots of peeople shootn em---and that is why!)....accuracy is good ...wind drift is more than the big un's (7mm-30cal)...but if you cant shoot in the wind you aint gona do good with anything no matter what cal.......Roger
 
Roger, if you're a tightwad, go with a .30, or even .338. I think he may have finally worn it out, but Alvin Johnson -- no stranger to winning more than his share -- used the same barrel in a .300 Ackley Light Gun from 1995 to 2010. He didn't waste it shooting ground hogs, of course.

And with the new Berger .338, 300 hybrids, I shot a 3.7-inch group in the shootoff last month. (Sadly, it was the score shootoff, & I wasn't centered up quite as well as Waverly McNeil). More to the point, Scott Fletcher has been using .338s to win at least something every match this year, until finally, last match, he didn't. He's also used the .338 to win HG in a couple Nationals.

A .338 barrel should last even longer. Normal drift in a 10mph crosswind for the 6mms is over 60 inches; with a .338, it's more like 44 inches . . . of course, the bullets cost about $0.60 each . . .

Everything is a compromise. Learn to love it.
 
I just shoot em...kinda! Don't have a clue how to build em....and I wasn't sure what "bushing the bolt" was......I just knew that I had had it done to my first dasher. I wasn't sure if I needed to UNDO it. :eek:

I really didn't want to hear 500 to 700 rounds.....the big ass cheapskate in me is starting to ooze out of me from every orifice!!! I don't want to FF if I can help it, so I was leaning to the strait 6-284/6mm rem, but maybe a 6-47L might do the trick. I have heard that they are somewhat of a battle to develope a load for, which is why I was leaning toward something else. I already have another dasher build on a BAT to compete with, so this was going to go back more toward a hunting gun that can be used as backup in a 1K match if needed.

Is there anything between the 6-47L and the 6mm Rem? I kind of want to stay with the 6mm. If I stray away from the 6mm I think I will go past the 6.5 (got one) and jump to a strait 284 win and use the good 6.5-284 brass.

Anything on bore size...236...237??

Just testing the waters...

Thanks,
Tod.

PS....hope to see a bunch of you at Harris this weekend!!
 
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Tod, I would think that the 6XC would be a bit better on barrel life than a 6mm Rem. For that matter a bit better barrel life
might be a 6XC case with the neck expanded to 6.5. As the body diensions are less than .060 longer than a 6.5 Lapua
The chamber might be done with a 6.5 X47 L reamer and use the same die, different bushing
 
Like I said...i think I will stay with the 6mm, as I have a 6.5 WSSM. The XC looks good, and depending on the age of the artical/page on the 6br website....$32.00 per 100 for brass is CHEAP. Reamers look like they are available, as are dies. I have TONS of H4350!! I just briefly looked at the 6 XC page, but all the info seems to be about the xc/115 dtac bullet combo. Anyone outhere have any experionce with the XC with this or any other bullet?
 
Tod Soeby said:
Is there anything between the 6-47L and the 6mm Rem? I kind of want to stay with the 6mm.

Anything on bore size...236...237??

Just testing the waters...

Thanks,
Tod.
Click to expand...

Tod,
The 6mm Creedmoor falls smack between the 6X47L and 6mm Rem. It is also a little hard on barrels with H4350 but it does like H4350 a lot. My last one had around 1300 down it before I set it back and chambered it in 6 BR, but at 300 it was already getting a lot of firecracking. I shot it last at last years 1K IBS Nationals before I set it back and won one relay with it.
Just run the 6.5 Creedmoor case through the 6 Creedmoor FL die and shoot.
I prefer the .237 bore myself and Bartlein 5R barrels.

James
 
Why not go with a standard 243 Win? Lapua has the brass. You'll get a little more barrel life then the larger capacity 6mm's.
I just rechambered a 236 Hart and added a tuner to the muzzle. 1st time out I shot 2 groups in the low .2's and one high .1 except for thr single flier which opened them to .500. Now if I can figure out what is causing that.........but that's another post.
 
Just an update......I went with a krieger 4 groove 1-8 29" I am going to go with a 6-6.5-47L.

Thanks for the imput!!!

TOD
 
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