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View Full Version : Huh? Break What?



Muleskinner
05-19-2010, 10:55 AM
Well my scope came today for my new model 12 benchrest Savage, so i have been working on checking some measurments for my bullet seating depth. Just because i am of a curious nature, I took a handfull of the SMK 107G bullets are started doing some random comparison measuments. All i can say is "Wow. I always thought Sierra was one of the best bullet makers out there, but out of a random 10 or so measurements None of them were the same length. Makes me wonder if some of the custom bullet makers some of you guys are using make bullets that are the same, or are they different lengths as well?

Hmm, Oh well, on to my question i guess....

I have been reading up on how to break in this new barrel, and have followed the "one shot and clean" method on my last 223 rifle. But got this rifle i want to make sure i do it right the first time. This is when i ran across an artical on the 6mmbr website which said that breaking in a barrel was rediculous, and it did nothing to help accuracy or barrel life at all. This artical explained that cleaning after each shot did nothing more than cause extra damage to the barrel by cleaning rods, but did help barrel makers sell more barrels.

http://www.6mmbr.com/GailMcMbreakin.html

I am curious about what you guys think of this, i have often questioned the reality of "How to Break-in a Barrel" theory. I dont know much about benchrest shooting, but i do know a little about steel, and i know that no matter how many times i run a patch or brush down a barrel, its not going to make it a better barrel. Am I wrong about this?

Muleskinner

caroby
05-19-2010, 12:49 PM
Skinner.......

Overall bullet length matters not... Get an ogive tool and check THIS measurement... You'll see that Sierra does a good job. Typically .002 or less in most Match King bullet calibers.

Barrel break in............ May yield results for factory tube BUT custom hand lapped tubes.... Mostly a waste of time...

Simple..

Bef first shot down tube, clean well... First 3 shots, look in muzzle.. If copper streaks, then clean good and 3 shots again... Repeat if copper streaks.
On a custom tube the copper is almost always from little burrs from the chamber reamer.. These burn off with the first shot to around 20 rounds...

Dont get too deep in the "break-in" techniques...

2cents...
cale

jackie schmidt
05-20-2010, 10:01 AM
I used to be one who said, "I break in barrels". But, after watching shooters such as Gene Bukys, (who has been known to make two bullets touch), just sit down and start shooting the darn things,, I figure we are just fooling ourselves.

Everybody to their own........jackie

oneflyer
05-20-2010, 10:23 AM
JB the hell out of a new barrel, clean it all out and start shooting!!!!!!!

Muleskinner
05-20-2010, 10:30 AM
JB the hell out of a new barrel, clean it all out and start shooting!!!!!!!

JB?, what is this JB you speak of?

Muleskinner

caroby
05-20-2010, 10:37 AM
"First 3 shots, look in muzzle.."
Isn't this dangerous and against the rules in place at most clubs and in the match rules of all shooting organizatins?

OK,OK.....

3-shots...... REMOVE bolt, put rifle in a cleaning cradle (or somewhere away from the firing line) ... look in muzzle for copper.... Nothing wrong with this practice...


This thread could go onandon andon.... Just shoot then clean.... Then shoot...etc...

cale

abintx
05-20-2010, 10:46 AM
There are all kinds of ways to skin a cat or should we say ... a mule. :D

Here's my favorite ... compliments of Joe Krupa.

"When I get a new barrel, I break it in with 25 pieces of newly turned brass.

I clean the new barrel, and then shoot 10 pieces to both fireform and break in the barrel. Then I clean the barrel and shoot the remaining 15.

After that, I clean the barrel and start tuning it with the first ten. I am convinced that you break in a barrel by shooting it than by cleaning it." :)

abintx
05-20-2010, 10:49 AM
JB? What is this JB you speak of? Muleskinner

It's this stuff:

amamnn
05-20-2010, 05:59 PM
I've never understood why otherwise fairly intelligent people would believe that slopping some solvent in a steel tube would smooth out rough spots, tool marks, and etc....But then I never understood why people bought so many Ford pintos, pet rocks, magnetic healing pyramids, Elvis sighting books, UFO books, ok I'll stop now, but not because I've run out of examples...........

John Kielly
05-20-2010, 06:46 PM
I've never understood ...........
Goes with the territory? :D

WA state in the drizzle capitol of the USA