I want to do some firelapping on my .22 liners

[bigHUN]

At my place I cannot find any of these Eunjin or Seneca or eventually Samyang pellets. I had a tin for years but ran out recently with a .22 size.
Interestingly nobody came up with an idea to modify or fabricate some sort of crimping tool that would make these grooves on slugs?

 

[Sergey1972]

https://www.swagedies.com/mm5/merchant.mvc?Screen=PROD&Product_Code=HCT-2&Category_Code=CANNELURE

Bullet knurling and cannelure (grooves) machines.

 

[jarmstrong]

the HCT-2 does a diamond knurl pattern
the HCT-3 makes grooves

https://www.swagedies.com/mm5/merchant.mvc?Screen=PROD&Store_Code=CBST&Product_Code=HCT-3&Category_Code=CANNELURE

 

[sb327]

I discuss how I groove slugs in this thread

What is the Purpose of Knurling on Slugs?

I’ve been trying to figure out if knurling reduces or helps a slug's velocity. So far I’ve read that knurling can reduced leading and it can hold lubricants better. I haven’t found much more on the topic. I’ve seen some .45 slugs that @nielsenammo makes that are knurled and I’m wondering why...

www.airgunnation.com

 

[bigHUN]

Thanks guys but for a price of a tin the $ contrast is pretty aggressive.
If I can find these my pellets for a price of a hamburger?

 

[jarmstrong]

folks have knurled with a pair of metal files, sounds cheap for a way to make a few for fire laping, to hold a little grit
since you are not knurling for size increase, to make them more accurate,,,

 

[Sergey1972]

Thanks guys but for a price of a tin the $ contrast is pretty aggressive.
If I can find these my pellets for a price of a hamburger?

Haha. I didn't relize you just wanted them for fire lapping. Thought it was 2 different issues.

 

[Airgun-hobbyist]

@bigHUN Are you bored, cooped up this winter and wanting to accurize some barrels?

 

[bigHUN]

@bigHUN Are you bored, cooped up this winter and wanting to accurize some barrels?

Canada here, mid January, -8C and the winter didn't arrived yet .... I am locked down in my mans cave and lasts usually up to April.... ;(

 

[Airgun-hobbyist]

Canada here, mid January, -8C and the winter didn't arrived yet .... I am locked down in my mans cave and lasts usually up to April.... ;(

Same temps here currently. I like to get out to the range in the winter, especially when it's calm. It's quite peaceful and it's usually just me and the deer out in that weather.

 

[Airgun-hobbyist]

Have you seen these 3M abrasive pads? They work great for taking down high spots and smoothing things down to even or a long taper.

https://www.amazon.com/Tri-M-Ite-Polishing-Abrasive-Assorted-Sheets/dp/B07CP9CCH4/ref=mp_s_a_1_3

 

[bigHUN]

Have you seen these 3M abrasive pads?...

I am using these same abrasive sheets for polishing the Reg pistons. My Impact MK2 Reg has creeped about 4-5 bars since Sept last time I use it.

 

[dgeesaman]

folks have knurled with a pair of metal files, sounds cheap for a way to make a few for fire laping, to hold a little grit
since you are not knurling for size increase, to make them more accurate,,,

I imagine that just hand rolling them in the grit against a hard surface should embed plenty well. And if not there’s always a bit of grease.

David

 

[Revoman]

Atilla!

It appears that Amazon sells those pellets that you have depicted....

https://www.amazon.com/Eun-Jin-Grains-Domed-125ct/dp/B001BS5MC6

mike

 

[bigHUN]

Atilla!

It appears that Amazon sells those pellets

Thanks, but amazon dot com doesn't share the products with dot ca
Many times I got emotional about this but lately getting used to burning a hole in my wallet ordering from EU instead.

 

[bigHUN]

Same temps here currently. I like to get out to the range in the winter, especially when it's calm....

During that famous covid time, I got cold in January at my range. Internal bleeding from bladder, two days laying in Emergency until they finally decided and gave me a "life threatening surgery". And recovery was brutal after that maybe a next half year...
So I learned in a hard way, and trying now to keep away from outdoors cold between December to April...
Watch your health and stay safe

 

[Sergey1972]

Thanks, but amazon dot com doesn't share the products with dot ca
Many times I got emotional about this but lately getting used to burning a hole in my wallet ordering from EU instead.

View attachment 529155

Eunjin Air Pellets .22 Cal, 32.4 Grains - Airhead Airguns Canada

.22 Cal, 32.4 Grains, 110ct

airheadairguns.com

Dont know the vendor. But they are canadian.

 

[igolfat8]

Pyramid Air has those pellets in stock.

 

[bigHUN]

Pyramid Air has those pellets in stock.

Thanks, I ordered from PA, could not find these in Canada

 

[bigHUN]

Yesterday I did a firelapping on two of my 25x700 liners I not use regularly.
I had a half a tin of these Eunjin in 25 cal, rolled into Loctite Clover (grinding and lapping) 280 grit compound paste, and shoot a 20 at lowest speed through each liners, the pellets bounce back from the clay.
Cleaned and washed the liners with Balistol, and pushed a 34gn JSB pellet through each liner - up to a choke - checking for tight spots.
Looks like I opened a new rabbit hole.
I think I had before 2-3 minor tight/loose spots on full length - and now have 5-6 very pronounced tight spots.
I put the exersize aside for a moment, I need to think - what is next?
- to do a polishing first with J-B (blue) and chack again for tight spots ??
or
- to do a 20 shots repeat trying to create=connect more friction spots together - and do the polishing then ??

I need a beer ... but need to get to a store to pick some ... about 10" white sheiss outside