Unusual barrel break-in.

[Alex Wheeler]

Bore scope the bore just in front of the throat new and after 50 rounds. Look at the surface finish. The barrel also speeds up in the first 100-200. The surface finish is whats breaking in. Throats smooth out too, but a re-chamber or set back does not go through the same changes as a new blank does.

 

[eric n]

Tony Boyer used a term "hummer barrel" indicating one that seemed to shoot better in windy conditions than one should expect. I am not sure if I have had a "hummer" or not, but my best slow twist barrel was a Krieger 14 twist and my two great fast twist were a Brux 8 twist, and a Bartlein gain twist (8.25-7.75). These three barrels seemed to make me a better shooter than I deserved. I broke them in with the 1 shot, clean, for ~4 cycles, then 3-shots, clean until I had about 20 rounds. Neither showed copper fouling after about 4 rounds. Have you had the pleasure of owning a hummer? Good shooting......James

The best barrel I ever had copper fouled from the start and never cleaned up.
Im A baby at this and no way have used enough barrels to have put the odds in my favor of getting a hummer but I do shoot with wind indicators and know that it shot through wind better then any other barrel I ever had. It had a big powder and seating window too...
I didn’t do any break in with that one