running in new barrel

crackcrack30

Question - how many rounds (average) does it take to run in a new barrel/ rifle to achive good groups ?

Tackleberrywho

crackcrack30 wrote: »

Question - how many rounds (average) does it take to run in a new barrel/ rifle to achive good groups ?

45 -63 approx, depending on make of barrel
1 shot clean after each for 5 =5
2 shots clean for 4 =8
3 shots clean for 3=9
4 shots clean for 4 =16
5 shots clean for 5 =25

I was happy after 40 rounds through my truflite barrel

Comeraghshooter

crackcrack30 wrote: »

Question - how many rounds (average) does it take to run in a new barrel/ rifle to achive good groups ?

Hi crackcrack30

Have to say Ive never followed any of the procedures of firing 5 shots and then cleaning fire another 5 and clean again when i got my new rifle. I just cleaned the barrel once i was finished shooting each time.
I'm not saying this is the right thing to do but Ive put around 4 - 500 rounds through it now and it always groups perfect!

CS

Tackleberrywho

https://www.youtube.com/watch?v=WjbnYm_HmXg

Or the high tech way!

https://www.youtube.com/watch?v=TRRahHX9Zkg

Longranger

Tackleberrywho wrote: »

45 -63 approx, depending on make of barrel
1 shot clean after each for 5 =5
2 shots clean for 4 =8
3 shots clean for 3=9
4 shots clean for 4 =16
5 shots clean for 5 =25

I was happy after 40 rounds through my truflite barrel

Nice one Tack,at last my rfd called(last night) and said my cz 455 hmr thumbhole is in:):):) just wondering if I used the method you described above,would a boresnake be sufficient for the cleaning between the groups?

It wasn't me!

Longranger wrote: »

Nice one Tack,at last my rfd called(last night) and said my cz 455 hmr thumbhole is in:):):) just wondering if I used the method you described above,would a boresnake be sufficient for the cleaning between the groups?

Barrel break in procedures are typically for jacketed bullets and centrefire rifle. For a smallbore, I'd just give the rifle a good clean before I used it, oil, brush, patches, then shoot it plenty and clean it every time I used it, wouldn't bother with a dedicated break in regime, and it certainly hasn't hurt my target rifle.

Cass

crackcrack30 wrote: »

Question - how many rounds (average) does it take to run in a new barrel/ rifle to achive good groups ?

Even with a break in process some barrels have significantly longer bedding in times than others. On factory barrels its usually longer than say custom barrels, and with different calibers/makes this also holds true. My old CZ 527 had 100 rounds or so through it and i could see grouping improving with the same ammo. I spoke to other lads with the same rifle and they told me their rifle did not come into it's own until after 150+ rounds.

Longranger wrote: »

.........,would a boresnake be sufficient for the cleaning between the groups?

Personally a boresnake for me is a tool to give a quick clean in a field/hurried situation. They do not provide a good cleaning and would not be as adpet as a rod and patches, mops, brushes, etc.

It wasn't me! wrote: »

Barrel break in procedures are typically for jacketed bullets and centrefire rifle. For a smallbore, I'd just give the rifle a good clean before I used it, oil, brush, patches, then shoot it plenty and clean it every time I used it, wouldn't bother with a dedicated break in regime, and it certainly hasn't hurt my target rifle.

Very true for a .22lr or other lead bullets. The .17 HMR could be run in as a .223, .243, .308, etc. due to its make up. ie jacketed bullet. For a ,22 though i wouldn't bother with any break in procedure. As with IWM my rifle prefered to fire with a fouled/dirty barrel so i only cleaned occassionally, and used no break in procedure.

Tackleberrywho

I've still to see the true benefits of breaking in. My truflite only has 100 or so gone through her.
I have new ammo to test at the weekend on paper, lets see if groups improve

I did not break in my old sako and she still shot well, so here's hoping breaking in the truflite will improve the groups Sunday!

demonloop

Give 'er a blast of a bronze brush and Brasso, job done.

minktrapper

Whats the reasoning behind breaking in a barrel.

Tackleberrywho

minktrapper wrote: »

Whats the reasoning behind breaking in a barrel.

even wear as the first 40 or so rounds will be wearing off subtle burrs etc

same way you break in a car engine of sorts