Complete CP2 barrel tests after Mod 16:04:2018

Had my SMK CP2 since Christmas but not been happy will the feed of the pellets into the barrel. After much thought, with the H&N pellets almost impossible to load, i tested my theory out on the pistol barrel. Super smooth now. Couple of video clips, the first in pistol mode after the modification and the second showing my solution to the problem and the testing in rifle mode. All the 5.5mm drill had done is reduce the amount of rifling in the feed area, not removed it completely, just enough to allow the pellet to push though by hand. If you have .177 Cal a 4.5mm drill bit should do the trick. Don't drill past the shoulder where the barrel meets the block. Very pleased with the results and will enjoy the CP2 now as much as my CP1. Hope you all enjoy these video clips and they are of help.

[@lexiehutt8874]

Great video, I have got the same problem and have tried loads of different types of pellets and its always the same. will be doing this to rectify the problem asap. Many thanks

[@andyjs4629]

Thanks for this very useful video review as I'm considering buying a victory.... This seems to have solved the sticky Mags issue... Best wishes from South Wales

[@douglaswilson5273]

Good morning ,great fix and review pal..😎

[@graham8032]

Thx for the video, was of great help ,drilled mine out , must say it's far better while feeding pellets.

[@paulbaker6378]

My mate Dave has just got one a SMK CP2 co2 pistol combo rifle and is impressed with it i have got a Crosman Ratcatcher co2 there both good bits of kit.

[@antonreints-bok9551]

artemis cp1 m almost impossible to load Super smooth now thank you for video

[@haroldpelham205]

Great video I will be doing mine tomorrow as pellets of all types jam up

[@jamikomodo]

Thanks for this! I have same broblem. Im goin to try drilling too. Thanks!

[@carldorking8924]

Done your mod on my cp1 works a treat now thanks for the video

[@reevessairgunningreviews5572]

No worries 👍

[@perspectiveflip]

I also have a feeding issue with most pellets when using the magazine. I will try this out thanks!

[@royjohnsonvideo]

Many thanks. Mine was so tight it was spoiling my enjoyment. I have done your mod. and it's now a joy to use. I'm sure it's more accurate now too, I think forcing the pellet was deforming it slightly. Single hole groups at 15 feet consistently now. Thanks again...

[@davidcottom7750]

Nice darts my man, good info good little gun. Best of both worlds for beginners or pest control or just plain plinking fun, cool accurate too. Have subbed 👌atb Dave

[@shaneweightman]

Gonna get one of these guns , look like fun , I bought a gas ram , webley last wk , if I’d have known about this gun would have bought instead , my bad for not doing my KZbin homework, will get a Camo version in the next 2 wks cheers Shane ,, uk 🇬🇧

[@bessiebraveheart]

Great info, I have a smk 600w rifle that had much the same problem. Just subbed.

[@Sonomatt]

John James McCartney same here. Any vids on taking the barrel off of the CR600W around?

[@Feathers147]

Great vid!👍👍👍

[@magoryn]

A hello from France and a happy CP2 owner. This gun is so much fun.

[@jimjordam]

I wonder if the feed issue is just on the .22 version? I have the .177 version using air arms diablo fields and accu pell with no feed issues at all, I know I've only tried two pellet types so if anyone with the .177 version is having feed issues please specify which pellets you're using. @ magoryn yep this is a really fun gun, it's eating through my co2 supplies at an alarming rate not because it's co2 hungry, it's just that I can't stop shooting it. Fantastic bit of kit. Nice video there Reeve's.

[@itz_rens0403]

magoryn A 5.5mm? Is it good?

[@magoryn]

I Have it in 4.5. I do not know in 5.5. concerning the feed issue, which is not a big issue, there many ways to get rid of it.

[@weirdscience8341]

Is it true your not allowed to hunt with airguns in France

[@magoryn]

@@weirdscience8341 Yes, it is tottaly forbidden.

[@jeffslade1892]

I used a very small reamer very carefully to clean the burrs off the port into the 177 barrel. And then a brass rifle cleaning brush to take the burrs off the rifling inside the throat. The only purpose of the brass brush is to remove burrs, normally only a nylon or felt/cloth pull-though would be used for cleaning. The outside of the port in the barrel was also raised and needed some gentle work by hand with an Arkansas stone with the O-rings off to smooth it. Pinch the O-rings to remove them not dig at them with a pin, they seem easily damaged. Clean the breech block out, it seems to collect muck. Re-grease and reassemble. It may be worth stripping the gun down. I found the cylinder tube very burred where the hammer rides. And the transfer port misaligned, it needed holding in place (shank of a drill bit) whilst the screws done up. With that all done the fps went up with the same shot count. No longer wasting gas, more efficient, excellent grouping.

[@davidmckerron898]

Cheers for this video saved me some money at the gun Smith

[@mst3kpimp]

Good idea but you should avoid putting drill bits down there as they can cause damage to the chamber and rifling cutting unevenly and leaving burrs ect. Better to use some cone and ball shaped abrasive bits for more gradual and even work. And of course after be sure to fully clean it out.

[@LoremIpsum1970]

never thought about using a reamer, never thought drills were that accurate? Got my CP2, thinking about making my own silencer now...

[@Frietpan]

i got into the same issue with the .177 version and found out that all the h&n pellets dont load properly, but i have tried many diffrent rws pellets and they all loaded and shot with no issues, same for gammo pro match pellets.

[@anthonywillis5842]

I have just purchased this product and intend to keep it in rifle format. I have had no problems with feed or accuracy. It is an astonishing economical unit. Quiet, accurate and I just love it!

[@anthonywillis5842]

.22 . A have a number of PCP field target rifles and springers . A couple in the £1500 region and more. I enjoy the CP2 because of how light it is. I am really tempted to take it with me to the next shoot day and shock a few people with it accuracy. Fun, Fun, Fun.

[@Benthedroneguy]

@@anthonywillis5842 do you have problems with loading the cp2? I'm looking to buy one of these but do not want to drill the barrel. Can you remember what pellet size you were using?

[@Feathers147]

I have the same problem with my smk victory cp1-m. The mags are fine, Is it the same fix to help the pellets load smoother as they sometimes feel like they jam up a little bit and need more force to load than should be necessary?

[@PeakyBlinder]

Hi Very nice vid, May I ask what you prefer, the cp2 or the pp800 or a mix and match of both. ?

[@Borked_Bits]

Great info. You could do with a camera tripod and table. Keep at it. Thanks

[@shaneweightman]

Good one buddy ,Shane uk 🇬🇧

[@Truckerjayjay]

What pellets do you find work beat in the CP2? Does anyone know any mods ? Is they a trigger mod or can we adjust the trigger ? Thanks

[@weirdscience8341]

Pellet tight ...you can get exact head sized pellets from jsb good idea tho you kinda head spaced it like a real one what's the accuracy like now

[@geraldonevesdossantos]

obrigado, foi otimo sua dica de abrir a boca do cano tava com este poblema ,muita dificulidade para encaixar o chumbinho 5.5 no cano ,com sua dica foi resolvido o poblema ok mais uma vez obrigado

[@anistainerodrigues586]

Amigo comprei uma igual gua o problema dela q vc tá falado

[@presilugo535]

genio! gracias!

[@brianbrown4965]

i used a bit of wet and dry polled it up and just reamered it till a pellet went in ok

[@vankus501]

i have 4,5 and i love it, silencer is very good

[@chriscarter9566]

Do You mean .177 cal / 4.5mm

[@vankus501]

yes

[@hairychickenful]

I got same problem with my 22 no problem with 177 ,sent mine back to smk and they just sent it back saying no problems. so try this thank you

[@lindobushmanpetrosillo6536]

I hope the manufacturer has fixed this problem

[@davidherron9151]

Exellent nice one

[@philalthorpe4864]

Good fix but personally I’d use something a bit less aggressive. Maybe a m3 bolt with a 1/4 inch cut and rap around some fine grade paper

[@Frietpan]

idk about taking a drill to it lol, i would change pellets. did you measure the h&n pellets or is it a combination of a bit to tight barrel with a bit to big pellet? maybe it just needs to wear out a bit to?

[@reevessairgunningreviews5572]

Tried loads of different pellets with the same problem. The drill only smooths the probe area, not where the pellet engages the barrel rifling. Many people blame the magazine, but it's clearly the finish of the barrel.

[@liam07hann]

Hi I've got my 4.5mm drill bit now how far do I drill in as when I put my drill bit in it stops just past the air port on bottom. Does it have to go abit further ?

[@reevessairgunningreviews5572]

About a pellet length pass the air port should do it. Smooth off the feed area so the pellet feeds past the port smoothly.

[@gk.spinoza]

I just got myself a variant of the cp2, but it's called a Diana 'chaser' pistol & rifle kit in Canada & US. I have been very pleased with the smooth bolt action, even when using the magazine. Perhaps the manufacturer is using a higher degree of QC for Diana?

[@ryanmoulden5440]

Just curious when you received it if the moderator was mounted or sitting seperate in the kit? Ordering one myself from Pyramyd Air soon. :)

[@weirdscience8341]

Just wondering how much they charged you extra for the Diana name

[@gk.spinoza]

The suppressor/moderator is Krazy glued or some type of loctite was used to permanently attached it to the 17.7" rifle barrel.

[@gk.spinoza]

@@weirdscience8341 not much it seems. The pistol/rifle kit cost $120 US dollars. There are some differences in like the bolt handle and although it comes with a left handed bolt/ upper reciever, there are right handed ones available. Both the pistol and the rifle kit also come with Diana soft cases. Although Diana has been around a long time, the Diana brand is not necessarily a high end AirGun brand anyhow.

[@magoryn]

concerning dismantling the gun, I made two videos about it. it's in french but if it can help, go for it.

[@Watchanycrap]

I watched it earlier ,very helpful . Thank you

[@simonbean1264]

Well done sorting the barrel issue, just ordered one of these in .22 so your advice may come in handy. Just one thing, do you have any problem using the open sights with the magazine in place ? One reviewer noticed it seemed to obstruct the view of the foresight blade.

[@simonbean1264]

REEVES'S AIRGUNNING REVIEWS . Thanks for that .I was considering getting a 2240 but this seems an altogether better package and much better value when you consider the custom bits for the crosman. In the review by Airgun Hub @11:40 the reviewer highlights the problem with the iron sights. It may just be that the rear sight was fully depressed out of the box.

[@ColinMill1]

Am I right in thinking that you have to remove the breech seal O-ring before doing this modification? Thanks.

[@reevessairgunningreviews5572]

Yes. remove the seal so you do not damage it.

[@ColinMill1]

@@reevessairgunningreviews5572 Many thanks for the reply. Mine finally arrived on Sunday (though due to Covid I only had energy on the day to see that the box contained something gun-esque). I'm very impressed with it especially for the money. I did find a burr on the port drilling of the rifle barrel that needed sorting before it would slide into place cleanly but that was all. I have had a tweet of the trigger and with a little needle-filing and polishing I now have a nice first pressure, good wall and clean break with no perceptible creep. I was pleased to find the long barrel's rear sight sits atop an 11mm dovetail as this neatly solved my problem of mounting the scope well forward to allow room for a Megaorei 2 IR converter hanging off the back (oddly this dovetail is 0.5mm higher than the rails on the breech block but nothing a little shimming in the tube clamps didn't overcome).

[@liam07hann]

Hi is it me or does the front fixed sight site slightly sit to the left and not centre? As my one does is this normal?

[@reevessairgunningreviews5572]

No. It should be vertical. Check your barrel screws haven't come loose. The centre one is longer and locks into a dimple in the barrel. The two outer ones tighten directly onto the barrel itself. If they are ok your front sight could have moved. Sometimes a light tap can straighten them, especially if you use open sights.

[@liam07hann]

@@reevessairgunningreviews5572 thank you. My cp2 front sight was bent already as the top 3 screw hadn't been touched I just made sure they wasmt loose. But I think I was sold a second hand one to be honest as its shooting all over the place even after heating and moving the front site it's all over the place so I'm having a replacement sent

[@stevehiggo]

hi neil a good video what drill should i use for a .177 mate thanks

[@stevehiggo]

thanks is it easy to do neil mate i dont want to mess my barrels up mate @@reevessairgunningreviews5572

[@stevehiggo]

REEVES'S AIRGUNNING REVIEWS thanks for the info it worked a treat neil mate

[@liam07hann]

Hi I have the cp2 in a .177 and when I put in the multi shot mag it struggles to push through. Could I do the same as you but use a 4.5cm drill bit instead.?

[@reevessairgunningreviews5572]

No reason why not. 4.5mm drill should work perfectly.

[@liam07hann]

Thank you I'll give it ago tomorrow and let you no. What scope would you recommend for 10 meters or 30 ? As my front site on my cp2 come bent to the left is that normal as it wasnt straight at all ? Thank for replying back sorry for the questions

[@reevessairgunningreviews5572]

@@liam07hann I fitted a Nikko Stirling 6x40ao. Not overly large, and good out to 30 metres.

[@liam07hann]

@@reevessairgunningreviews5572 would that be ok for shorter distances aswell ?

[@reevessairgunningreviews5572]

@@liam07hann Fixed 6x Mag, but with the adjustable objective on the front of the scope, it will focus down to 10 yards.

[@simonbean1264]

Hi . After recieving mine I had exactly the same problem which I have now remedied using your 5.5 mm drill solution. I have however encountered another problem. Using pellets which have hollow backs the bolt probe (being very short) is only pushing the pellet halfway across the transfer port resulting in poor power. By removing the barrel and breech assembly and loading a pellet this is easy to see . I assume the probe length has been set using pellets with more solid backs ie Crosman which would I assume be pushed a millimetre or two further down the barrel and clear the transfer port. I have ordered a longer bolt probe which should cure the problem as the pellet should be pushed just past the transfer port for max performance.

[@simonbean1264]

@@reevessairgunningreviews5572 Hi again. Yes I appreciate all pellets have open backs for the reason you state but some are more open than others. Take a look at any of the Crosman 14.3 grn pellets and you will see what I mean . They are 'filled' about half way up the skirt and would therefore be pushed further into the barrel with a shorter probe. The pellet should be parked just past the transfer port for maximum efficiency.

[@simonbean1264]

@@reevessairgunningreviews5572 Hi there . No in fact the Crosman are pretty good as they are being pushed further down the barrel as they have a part filled back. . It's the JSB RS that are the problem they have very hollow backs and the probe is going into the hollow but not pushing the pellet past the transfer port. In fact the pellet gets 'parked' right over the transfer port with barely any opening for the co2 .

[@simonbean1264]

@@reevessairgunningreviews5572 New extended probe arrived today from T Robb, may get it fitted tonight. According to Mr Robb the idea is to set the length of the probe ( using your favoured brand of pellet) until it just pushes the pellet clear of the transfer port. Then stick to using the same pellets.

[@simonbean1264]

@@reevessairgunningreviews5572 Hi , yeah really good now JSB RS ( Falcon) pellets now clearing transfer port , performance much better around 440 FPS for 5.8 ft/lbs ( pistol config). I did notice when removing the stock that the bolt holding the valve body to the main tube was loose and had no loctite on the threads, I applied blue loctite and retightend . Maybe other owners worth checking as if it works loose the bottom transfer port o ring will not seal to the valve body and also may not puncture co2 cartridge when end cap tightened.

[@Makobadger]

I also have that problem I'm going to put mine on te lathe

[@Makobadger]

Becouse would like to be able to laod it with my thumb

[@horridhenry1805]

Weirauch silencer makes this gun whisper quiet

[@jerrycrowe8448]

Have you noticed any difference in accuracy, better or worse or perhaps the same

[@reevessairgunningreviews5572]

Much better accuracy, and consistency after mod.

[@jerrycrowe8448]

@@reevessairgunningreviews5572 thanks for your information

[@vidyows8118]

where can i buy this cp2?

[@vidyows8118]

thank you so much sir!

[@timwade8766]

I have just bought one of these and have the same problem. I am thinking that to be on the safe side and rather than using a drill I am going to try and use a pellet sizer as I already have one. The sizer suitable for 452 pellets generally reforms the skirt of the pellet and makes the pellet slightly smaller in diameter so should therefore be easier to load, hopefully!!! I am also wondering if, through use, the rifling in the barrel would smooth out with use and thus eliminate the tight pellet effect. This is not a criticism of your work and ideas, all the best.

[@timwade8766]

You are right, tried my method and the pellet was loading to the left and as a result was hard to load and would then shoot off target. I put a probe down the barrel and could feel a slight burr by where the seal sits so got a small 4" file and carefully took it away. Now shooting 3" targets at 30 m, many thanks, Tim@@reevessairgunningreviews5572

[@liam07hann]

Hi could you email me a video of exactly where and how far I need to drill please. Thank you

[@reevessairgunningreviews5572]

At the end of this video I show how to drill out the breech end of the barrel. You need to go in just past the transfer port, so the pellet feeds past it smoothly. Use thick oil, I used engine oil for lubrication when drilling. Don't forget to remove the barrel seal before drilling, and refit afterwards.

[@andyjs4629]

@@reevessairgunningreviews5572 thanks for this useful video review and seems to have solved the sticky Mags issue... Cheers

[@PeterAgostiniJdcap26]

Use domed pellets

[@reevessairgunningreviews5572]

I only use domed pellets as i find them more accurate out to 20 metres.

[@PeterAgostiniJdcap26]

@@reevessairgunningreviews5572 good to hear .

[@mikecreathorn2881]

An absolutely uneccessary mod if you are aware that pellets can be obtained in slightly different sizes. You always need to experiment in order to find the best pellet for any barrel. Sticking a drill up the barrel does risk damaging it.

[@reevessairgunningreviews5572]

It can’t be un-necessary as it has worked for hundreds of shooters. Poorly finished breech end of a cheap Chinese barrel, will not feed any but the very softest pellets, and I tried 10 different pellets of different sizes, both weight and head size. Over 38,000 views can’t be wrong, so it seems you are.😂😂

[@valsertanejo]

Bom

[@phillipsharpe6459]

Ok 😂🤣👍