First pcp airgun

I don't have my .22 Marauder any more as I have gone totally to .25 but I had good results with adding a SSG (spring guide) and a slightly lighter hammer.
Open up the air splitter holes on the end of the barrel quiets down the rifle even more (its plastic n easy to drill).
Go buy a used paintball tank and adapter with microbore hose and use it for field/hunting n range refilling the rifle (get about 3 fills from 2k to 3K). Easier to carry and does not wear you out when you need to be rested to shoot accurately. KNOW that higher pressure is NOT better, most peoples rifles shoot best starting around 2700 PSI fill.

And shoot at least 500 pellets to break in the rifle, cleaning about every 100 shots, then really test for accuracy.

I eventually regulated mine by buying the complete Hill package of hammer, valve, gauge port n regulator but I would not do that just yet in your case... go SHOOT and shoot and shoot and enjoy and later do the expensive mods because you might decide you don't need them after all because it's a pretty good rifle right from the box. Some people take out the lawyer spring but it reduces safety and a novice shooter should not do it in my opinion.
 
"tempo47"Do you have to remove the shroud on the marauder to clean the barrel? I think my cleaning rod and string are being blocked by baffles near the barrel band or something, i ended up taking the shroud off and it went right through just wanted to make sure im not missing something or if this is the way it has to be done
Yes you do need to take the tube off as you found out. You can and will damage the baffles running anything through them. Plus it's a good time to clean all the part while you have it apart.
 
Methods differ. Personally I prefer to leave the shroud in place so the free floating barrel can't be damaged or bent a little. Just me.

​I put a straw down the baffles to guide a folded piece of trimmer line down the barrel. Once it hits the breach I put a patch in it and pull it back. Not the fastest cleaning method by any means.

​The other method I use is with a bore snake, If you use a bore snake, you must remove the brass brush from the snake, but once done, sure makes the cleaning process faster. Remove the brass brush and the brass end and know the end of the bore snake to prevent unraveling. Use the folded trimmer line and straw like you would to patch the barrel, but pull the knotted end of the bore snake through. then, just pull the bore snake through, and barrel clean.

​I only clean every couple thousand rounds, so it can get leaded up between cleanings.
 
I've never done custom work on a gun or had custom work done; however, I found that AOA ran a YouTube vid 
showing their custom gun shop.

​Other custom builders exist, but since I have no experience with any of them, the video sticks out.
​Google search showed Mac One Airgun Shop, Ronnie at Eason Airguns, and others. If one is close, you could do a bit of research on their reputation and see how it goes. 

I'm finding that tuning the Marauder is very simple though. All you need is a chronograph, set of hex wrenches, compressed air, pellets and some time. Good weather doesn't hurt, and I've been lacking that lately. I'm experimenting, trying to find the most efficient tune for JSB 18.3 grain pellets. That's half the fun of tuning, I get to tinker.

​I've got the factory settings, and Crosman will provide them to anyone upon request. If you mess up the settings or just don't like it, put it back to factory and start over. Takes about 30 seconds to get the three screws back. Highly recommend you get in and completely mess up the settings so you can get to know the gun.

​As for parts like regulators and such, I understand the hesitation. Do consider though, parts like regulators are adjustable and if you don't like how it works, you will need to send the gun back, or learn to take it apart anyway. The costs of a custom shop may also be high enough to buy another gun along the way, so it's all that balancing act, what's your time worth. Custom shop might be the perfect solution for you where for me, I like to tinker.

Good luck





 
shots per fill depend on the tune. At factory tune, the Marauder gets 30 shots per fill, no matter what pellet. The heavier pellets just fly slower. Example, the Crosman 14.3's fly at about 830 fps while at the same tune the JSB heavies fly at about 750 FPS. Turning up the hammer adjustments increases the air used on each shot, so decreases the number of shots. The transfer port adjustment doesn't change the amount of air from the tank, only the speed at which it hits the pellet. So, at factory tune for the hammer, if I open the transfer port I should be able to get some change in the pellet speed. That's the theory I'll be testing this week.

​My current tune where JSB 18.3's fly at 830 fps gives me 20 shots per fill, so looking for a more efficient tune. The JSB's fly so well at longer ranges, I really like using them, but I believe I'm wasting air somewhere in the equation. I'll keep searching and if I ever find the perfect tune, I'll post it.

​My goal is to be able to go to the range with my three hex wrenches, and a chart, and be able to change the tune for the pellet I want to shoot whenever I want. Once I get the adjustments down, it should be a matter of turning a couple wrenches.
 
Spyser is exactly right, tuning Chrony work and turning screws. That's basically it. Regulator installs are easy 

​literally it took longer to degass the gun, but this guy has done it more than once, so if you do it (not saying you should), take your time. The threads are fine, so just take time.

​The Gen 2 Marauder is a fantastic beast. Just shoot for a couple months. Put a thousand pellets through it and see how you like it. If you feel the need to adjust and tune, then do so. I've chosen to keep my gun as completely stock from the factory. Someday I may change that, but for today I view it as a fun learning platform. It's been great to learn from. While the Field and Target version promises a lot, it also gives up some of the adjustability the Marauder is famous for. Is that good or bad? that depends on what you want to use it for. Frankly, when you buy a Field and Target version, an FX Streamline is looking pretty close price wise, and it's got some things I really like.

​Other comparable, regulated guns are already on the market like the Fortitude and Gauntlet, so if you feel the need to change things around, lots and lots of options.

​As for the regulator, I've looked at them in the past. The $69 version gets fantastic reviews, but takes 4 to 6 weeks to come in from Eastern Europe. The Huma is around $110 or so at AOA and available today. Both work, just depends on your desires.

​Shoot first, modify later. You may find you don't want to modify - - - - - - - - then again, the Marauder is a fantastic tinkering platform!