Non choked barrels for pellets?

[denovich]

Lapping the barrel in my Diana Skyhawk .22 helped turn it into a slug shooter. The choke was a bit tight, even with NSA's smallest diameter slugs... I wasn't sure how far I could go and didn't want to make things worse. I also lapped out a tight spot I could feel when I pushed a slug down the barrel. It didn't take that much work to make it less severe. I stopped after the first pass as I found the slugs started grouping well at 100yds. I used a combination of diamond lapping paste on a bore swab and a diamond lapping fabric wrapped around a mandrel.

 

[nervoustrig]

Regarding taper lapping, I’ve only been prepping barrels in this manner for roughly a year so I consider myself to be a newbie in this arena but I’ll share a few comments and observations. This process involves coarser abrasives than I’ve used in the past so I started with 3 poorly performing barrels I had set aside, with the mindset I can’t ruin what is already ruined. All 3 being barrels I had previously attempted to whip into shape with leade work, recrowning, and smoothing the bore…to no avail. Well, suffice it to say these trials were instructive. Two of them shrank average groups by a factor of 2x and one by a factor of 3x. Granted these were complete basket cases so I’m skeptical the average barrel stands to benefit to such a large degree but it nevertheless opened my eyes to the potential.

In the intervening months I’ve done a few barrels for others, both new and existing, and have heard some glowing feedback so I’m pretty well sold on it. From here I just strive to refine my technique and get better over time.

 

[bigHUN]

I droped of two barrels to a shop to chop of the thread from the muzzle end, and now just remembered that I forgot to tell him not to deburr the front face... no problemo I will need to re-crown anyway.

 

[Jaxjax]

Regarding taper lapping, I’ve only been prepping barrels in this manner for roughly a year so I consider myself to be a newbie in this arena but I’ll share a few comments and observations. This process involves coarser abrasives than I’ve used in the past so I started with 3 poorly performing barrels I had set aside, with the mindset I can’t ruin what is already ruined. All 3 being barrels I had previously attempted to whip into shape with leade work, recrowning, and smoothing the bore…to no avail. Well, suffice it to say these trials were instructive. Two of them shrank average groups by a factor of 2x and one by a factor of 3x. Granted these were complete basket cases so I’m skeptical the average barrel stands to benefit to such a large degree but it nevertheless opened my eyes to the potential.

In the intervening months I’ve done a few barrels for others, both new and existing, and have heard some glowing feedback so I’m pretty well sold on it. From here I just strive to refine my technique and get better over time.

Shilen does this & is very good at it
It's a 1 year wait for there premium taper lapped 22lr now or was as of a couple weeks ago
Joe