Why does my MM-B28 sound like its going to explode?

[jberenyi]

As I'm cocking the barrel the spring sounds like its binding and ready to explode. The cocking rountine is loud enough to scare varmint away before I make the shot! Do all MM-B28's sound this loud during the cocking routine? If so, I'm dumping it.

[longislandhunter]

It shouldn't sound like that, something is definitely wrong,,,,, sounds like the spring is broken and binding up,,,,, I would give Mike a call....

Jeff

[jberenyi]

longislandhunter - 5/24/2009 10:54 AM It shouldn't sound like that, something is definitely wrong,,,,, sounds like the spring is broken and binding up,,,,, I would give Mike a call.... Jeff

I did and he said it was normal. Here is his email:

What you are hearing is the hinge in the cocking arm rubbing on the stock as you cock the rifle, it's normal but....pull the action and check where it's riding on the stock, make sure it's not gouging anything. Once you get used to the sound it won't bother you any more...Mike

If this is the best I can get then this rifle has to go. I knew it was too good to be true that the Chinese could make a decent clone of the RWS 350. I still say its the spring making the noise and not the stock. I checked the stock and their is no rubbing witness marks that I can see.

[jberenyi]

I just took the stock off and started to cock the rifle and you can see the spring making a funky noise as it is being slightly compressed as ifsomething is broken inside. I am very puzzled that Mike told me this was normal. This is definitely not normal and something is binding and catching the spring.

[jberenyi]

Here is a pic. Counting from the right you can see the first 5 springs are at a different angle than the others. As the spring compresses you can here the spring jolt after everyso many degrees of cocking and it continues this jolting action until full compression.

[onemountain]

It could well be that your B28 is indeed broken and Mr. Melick simply misunderstood what you told him about it. Miscommunications do happen, and it sounds like he's an especially busy/weary guy right now following his China trip. If it sounds like a duck..

[jberenyi]

Splash - 5/24/2009 1:23 PM Spring doesn't appear broke. PM sent.

If not broke than what is causing the spring to catch and jolt forward along the compression path?

[leftcoast1]

I bought a B28 from Mike and they do make a noise when cocking and it is the cocking arm rubbing against the gun. From looks for your pic I would say your spring is broke. The missing cant in the middle indicated to me that spring broke on the side you can not see. My recommendation is to box it up send to Mike and have him look into it. Send the pic you posted to Mike as well. Mike will make it right if there is a problem no doubt about it.

[lil'feeby]

i have a mm28 also and if something is wrong he will take care of you and it. he has the best customer service there is. my 28 is a 22 and shoots 834fps with 15 gr pellets at 15ft from the barrel. once you get used to a magnum springer you can put a dent in the varmit population for sure.

[mikeiniowa]

Send it to me and I'll get it right, you should have an e-mail...

[jberenyi]

Mike is awesome! We chatted and I'm going to go with a Maccari spring setup this time instead of replacing with the OEM spring. This should make this magnum a smooth cocker. I'm excited! She goes out Tuesday to Mike.

[Brod_Man]

mikes a good guy. he'll treat you right. ive bought nothing form him, and hes helping me with my tune on my storm, and he has helped a lot already.

[tjk]

I've had similar probs with my B-28,...but in useing a little "know-how" with a  dremil tool,.. and some patients,...things smoothed out real well . Plus I just plain shot the living crap out of it! ,....No Mercy!!!!!!!!! Took a while,....but she's a well behaved Mama San Now. Can't decide if I like going with the glass, or going with the irons!?!?!?!?!? As for the spring rub,...Mine did too every 50 rounds or so,..it (the spring) would 'cycle' around and make the most God-Aweful popping sound,....but this too has passed. Like I said,...No Mercy!!!! I plan on sending mine back to Mike for a check-up,....after about 10K more rounds!!!!! LLH!!!! tjk
PS If you send it back to Mike,..he will make it right!!!! No BS, Thomas

[mikeiniowa]

if the rifle is cocked hard right at the end of the cocking stroke it will dent the liner and make it rub on the spring, don't need to be hard at the end of the stroke, the trigger engages easily...common problem with owners who think because the thing is hard to cock it's also hard to engage the sear,.....

[jberenyi]

Just an update. Got the rifle back from Mike today and was bummed again after shooting it several times. I never noticed this before because I only shot it once when I got it originally but now everytime I load a pellet, it loads cockeyed. This causes the pellet skirt to shear and dent upon closing the barrel. Further inspection reveals that the factory chamfered the chamber portoffcenter. I wrote to Mike but now I have no idea on what to do because this barrel was chopped and crowned by Rich in MI. I imagine the right thing to do would be to replace the barrel but I don't want to pay Rich again for his efforts on the chopping and crowning. I knew is was too good to be true, that black cloud just doesn't want to show any sunshine on me.