STX Barrel Break In & Indexing

Forums PCP Airguns STX Barrel Break In & Indexing

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    AirgunBill
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    Member

    There was a post recently about the new FX STX pellet barrel liners fouling quickly and the accuracy falling off fast. I found this true with my new Impact MKII in .22 caliber with the first shooting and accuracy falling off after 50 to 100 pellets shot. This was concerning to me but with each successive cleaning it took less patches to get the barrel clean. The way I look at it it is similar to breaking in centerfire rifles you must break them in with the right procedure. You can polish the bore or just shoot pellets til the bore smooths out. I would guess at this point I have shot over 1000 pellets through the barrel and have clean it about 4 or 5 times. I decided to do a video of current accuracy after shooting about 200 pellets since the last cleaning then and see if there is any difference in accuracy. After that I wanted to try indexing the barrel to get the best accuracy and harmonics. I am a noobie at this so judge the results as you like and add any insight as you wish. The video is long at 30 minutes but I wanted to show the process live. Bill

     

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    allenbowles
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    Member

    nice job.

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    Centercut
    Participant
    Member

    Nice job. Eye opening. Now I have more work to do on my Crown…  ;)

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    CHUCK
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    AirgunBill, leave it set at the 12:00 position! You are indexing the barrel to find at what position you get the tightest groups…it is just coincidental that our tightest groups are usually at the 12:00 position at the top of the "barrel whip" you refer to. Leave it at 12:00 and make a registration mark so that you can always put it back to that same spot in the future if you ever take out the barrel liner for some reason.

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