6.5x47 shooters .....

[Marksman]

For those of you who have built a 6.5x47 on standard actions, did you have to get a bushing for the firing pin to avoid pierce primers? Or does a standard 308 set up work fine? Thanks.

 

[Macs]

The standard bolt should work fine unless there is something wrong with it.

 

[bluejazz]

I would recomend bushing.

 

[ChuckMiller]

I had to bush mine, mild loads created a lot of primer flow, no pierced primers, just a mushroom you could hang a figernail on. Quick trip to Gretan and I was back in business.

 

[olympian]

Think about it. If you are piercing primers, then the pressure is probably higher than it should be.

 

[flatlander]

I don't even ask a customer whether he wants the firing pin hole bushed when we're barreling a factory action for a BR, Dasher, or 6x47L - the bolt gets sent out to Greg Tannel for the work as soon as it's practical. Many factory bolts are just flat sloppy when it comes to boltface/firing pin clearance. I'm going to be building a rifle in 6.5x47 for myself in the next few months, and if it winds up built around a factory action, Greg will get the bolt before it's ever fired.

 

[bluejazz]

olypian,
In this particular case, the bulging primer has more to do with the primer pin/boltface clearance than pressure. It needs to be bushed.

 

[cayennejon]

I'm currently shooting the 6.5 x 47 Lapua on a Browning A-Bolt action. This action features three locking lugs, a 60 degree bolt throw, a small roller on the cocking piece and a small diameter firing pin. No problem with primers.

 

[Marksman]

If I 'bush' a bolt for a 6.5x47 lapua, will the bolt still function as a 308 winchester in the meantime?

 

[skeetlee]

What difference does it make that the primer is cratered a little bit or that there is a little primer flow? I guess i dont know what that has to do with accuracy and function? My 6.5 creedmoor is on a trued rem 700, and i have noticed a small amount of cratering of the primer or primer flow. The accuracy is outstanding, and i dont see it to be a problem. Maybe i can learn something here, so please explain. thanks Lee

 

[LHSmith]

skeet- blanked,pierced, ruptured, or whatever you may call them) primers are NOT a good thing for the shooter or the rifle. The cratering indicators MAY be a forewarning.
In competition a blanked primer can get you out of contention---real quick....and it truly can be a hazard especially without shooting glasses. Also hard on firing pin assemblies and bolt faces.

 

[skeetlee]

would an oversize firing pin take care of the problem. In my case the flow seems pretty minor. I have a shoot to attend today, but when i get home i will try to take a pic of my fired brass. I like my stuff to be top-notch, so i may need some opinions as to whats up. Thanks Guys!! Lee

 

[LHSmith]

I would first try primers with thicker cups, i.e.Rem.7 1/2's, Wolf magnum. If they still cratered badly,with reasonable loads) I would then have the firing pin bushed.
I get blanking on my Bat 6 PPC, when I push the envelope and don't pay attention to rising temps during the course of a match......and they have a very close fitting firing pin.

 

[jb1000br]

I bushed mine,6.5x47 and 223AI) before I shot either...

You don't get much more of a bargain for $50,from Greg Tannel) in the gun-work world IMO...

The 0.062' fitted pin tip in my Stiller actions inspired me to do it preventatively on Rem actions.

Why allow a compromise just because 'you shouldn't load that hot' ?

YMMV,
JB

 

[texascustom]

I took the Remington 700 armorers course about a month ago and just wanted to pass on a little info. If you are using a 700 action made in the last 18 months or so to make your custom rifle, the engineers at Remington in all their wisdom decided to chamfer the inside of the firing pin hole. To my under standing it pulls material from the thicker part of the primer and actual makes it harder to pierce primers but it shows up as a cratered primer. Of course they didn't tell anyone this, the instructor of the course I took actually had to call them because of all the complaints he was getting and he has worked at Remington for 10 years. Go figure., I'm putting together a 6.5x47 on a 700, pictures coming soon)

 

[ChuckMiller]

That's an interesting tidbit on the Rem. I've had 8 rifles bushed by Greg over the years including a Predator, a one-off John Bunch custom and the rest Rem 700's. I've never had a problem with piercing primers with any of them. For casual shooting in a factory rifle I don't know if I would bush the pin but all of mine had custom barrels/stocks and that fat mushroom just bothered me. If I was going to have a primer crater I wanted it to be a pressure indicator and not a function of a sloppy firingpin to bolt face issue. I don't have any of the actions made in the last 18 months and my issues all cropped up starting about 3-4 years ago and as I said were not just limited to Rem 700's. I once accused Greg of being in Cahoots with Rem, they created the problem, Greg fixed it.