PCP Slugging .25 Seneca Eagle Claw

[Chief55]

So, I decided to slug my barrel. What I did was pack some grocery bags into a cardboard tube and stuck the barrel in it and fired it. I had to do it 3 times. The first time it blew out the side of the tube. The second time it worked perfectly and I did my best to mic it with my old hands and eyes and got .2515. The third time I apparently had the bags packed a bit tight and the pellet bounced out and had expanded perfectly to .455 and that totally blew my mind. All were shot at 1 click below medium power. On the right is the fired/slugged pellet. These are JSB Exact King Heavy MKII 33.95 gr. I still can't get over that expansion.

 

[Mike Brown]

I did a low tech penetration test with my Hatsan Flash QE .25 last 4th of July. It involved 7 beer cans full of water(couldn't waste that much beer!) Anyway, the JSB 25.39 pellet went completely through 6 cans and 1 side of the 7th. When I dumped the pellet out of the last can it looked a lot like the expanded pellet in Chief 55's picture but I didn't measure it. Was quite a surprise though...

 

[Ezana4CE]

@Chief55 Slugging a barrel involves pushing a slug (or slugs) down the bore and measuring the groove diameter imprinted on the slugs. To my understanding the aim is to determine actual bore size and which slug size is best suited for a particular barrel. Are you saying that you did this as well as shoot pellets into a homemade pellet trap stuffed with plastic grocery bags? I’m not sure how this can be done by shooting pellets. Part of the process involves how it feels while pushing the slug down the barrel with a dowel or rod.

Take a look at this thread for details on slugging an airgun barrel. I’m not the best person to explain this process.

How to slug a barrel? ð¤

How to slug a barrel? ð¤ I keep reading how important it is to "slug your barrel" in order to play the slug game..... (And buy correctly sized slugs for the barrel.) However, two things seem to never get explained in this context: ⪠How to "slug" the barrel ⪠How to measure what you...

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