Chambered a Tac 338 in 338 Lapua Magnum today.

[Rustystud]

I dialed in, turned, threaded, chambered, headspaced, chamfered, polished, testfired (later), and engraved ( after polishing and glass bead finishing it) a .338 Lapua Magnum. Then bored out the muzzle brake out to .358", then turned it flush with the barrel. I then polished all the tool marks out of muzzle brake and indexed it to dump out to the sides. Then polished the rest of the barrel and glass bead finished it.

The brake tenon was .625 X 32 tpi dialed in dead nuts .

This has been a half day project. I started at 5:00a.m. and finished at 1:30p.m.

Seven hours divided by $520.00 = $74.28 and hour.

I wanted to test fire this barreled action but did not have a stock to fit it. I took a nylon strap with a buckle on both ends. I put one loop around the action belind the recoil lug, I mad about 4 half hitches and stuck my left hand though the other loop. I held the barrel with my left hand and loaded and pulled the trigger with my right hand. Remember 4oz kelby trigger. Man does a 338 lapua magnum have a report . The muzzle brake tamed the recoil considerably. No flying barreled action though.

Nat Lambeth

 

[Eddie Harren]

WOW!!!!!

 

[jscandale]

What is the message here?

JS

 

[high country]

Now add in clean up time, tool wear, chemical, electricity, insurance, heat....etc. dang it.

 

[X Ring Accuracy]

Quit slouching and get back to work ;D

 

[Dans40X]

nat,
Don't speak too soon, as the next may try to take names for some simple reason!!!!

 

[X Ring Accuracy]

Replying here ONLY means you could be working. Stop the insanity and go chamber another masterpiece.....JEEEZ

 

[Rustystud]

Your right, I just finished the bolt work and chambering on a .284 Winchester on a lefthanded Savage model 10 action throated for 180 Berger Hybreds and Sierra 180 BT. This is for a HM Any/Any Shooter. 30" fl, ss, 1:9, 5R, Rock barrel.
Nat Lambeth

 

[X Ring Accuracy]

STOP the internet chatter......WORK, WORK, WORK and hurry up about it. Dammit man.

 

[Hal]

Nat

When chambering Monster cartridges like that, do you have something that reaches that far up into the throat to indicate the alinement of the axis of the barrel ?

Do you drill out most of the chamber ,bore , than ream the last part.

Thanks

Hal

 

[Rustystud]

I dial in all my barrels both ends with range rods or deltronic pins.

One needs to have the tenon end concentric to the threads, and co-axial to the bore.

We all do the best we can do with what we have to do it with.

Nat Lambeth

 

[Hal]

Nat

Thanks for the reply..
I need to buy a set of Grizzly rods or a longer stem for my indicator..

Hal

 

[Rustystud]

I only use premium grade barrels. They are drilled (during the manufacture process) from the tenon end to the muzzle end. Barrels drilled with bits cut with the proper geometry drill pretty straight for the first few inches then they are piloted off the whole they are drilling. The better barrels have less than .003" wonder over the course of the length drilled. Drill bits don't cut round holes. The barrels are then reamed, and the reamers are 2" or longer and do a lot to straighten out the bore. The varience in hardness, difference in cutter hook bite, and or button demention causes varience in the grove depth. I don't agree with many gunsmiths that the land diameter is what should be measured off of . The actual bore is a much more controlled diameter to work with. Pins, and rods give an average of the tops of the lands. Most gunsmith don't have indicators accurate enough to measure the differences in the first inch of the tenon and the second or third inch down the bore. A ten degree temperature difference, or the loss of the load on the spindel bearings have more effect in the dialing in a barrel than the anomolies found in the barrel.
I dial in my barrels until the .0001" indicator quits ticking. Many posters here say if one removes the rod and re inserts it again the measurments will be different. I agree with the measurements differing but has the ticking remained gone that is the important part. I will dare those who measure off the lands to remove their indicator and reinsert it that it too will not be measuring the same exact numbers but should be consistent with the same variences as noted when indicated before. We all agree ther are several ways to skin the cat.
Nat Lambeth

 

[Hal]

Nat

Thanks for the reply, very informative.

Hal