http://airgunguild.com/pcp-c02-and-helium-powered-airguns/30-mrod/msg6082/#msg6082
Here's my results not sure why they differed so much from AJs....
Here's my results not sure why they differed so much from AJs....
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.30 Marauder project begins
- Thread starter ajshoots
- Start date
I got 10 at 880fps and 5 from 934-920 both with 1.5% ES depends on how many more shots you need.
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I only had a stock airtube for a short while and found an issue when I tore it apart to put a bottle on it. Not sure what it would do on the stock tube when things were right?
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The highest velocity I could get and still have a bell curve and es under 2% was 910fps. To go above that I have a descending string. My valve was long before Hill came out with an actual .30 valve, so not sure if there are differences between what I have and what his .30 valve is? Mine does sip air though. Almost any tune I only use 700psi instead of the typical 1000psi. I thought about getting the new .30 valve just to see if there is much difference, but I don't really feel like tearing the gun down and I rarely shoot it anyways.
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The extension doesn't 't gain alot of shots, but does add alot of weight to the front of the gun.
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I've tried the air tube extension and agree with ajshoots on making the gun front heavy. It also extends the tube longer then the barrel shroud. I went with a longer shroud since my .30 barrel was 24".
The bottle kit I was using is from JDS airman with his 4,500 psi metric regulator and TalonTunes CF bottle. My location machine shop only charged me $15 to cut the tube and drill the holes. It ended out being cheaper and with more precision results by having them do it.
The gun shoots very accurate and has good weight distribution to shoot from the shoulder. I don't shoot it much for two reason.
1. My .30 cal barks louder then all my other airgun for the backyard even with an extended shroud.
2. I pellets cost much more for planking.
Due to the reasons above I switched the bottle setup with my other 25 cal Marauder.
The power is amazing when I use it on small game and still sounds reasonable in the open field.
Good luck on your .30 cal conversation
The bottle kit I was using is from JDS airman with his 4,500 psi metric regulator and TalonTunes CF bottle. My location machine shop only charged me $15 to cut the tube and drill the holes. It ended out being cheaper and with more precision results by having them do it.
The gun shoots very accurate and has good weight distribution to shoot from the shoulder. I don't shoot it much for two reason.
1. My .30 cal barks louder then all my other airgun for the backyard even with an extended shroud.
2. I pellets cost much more for planking.
Due to the reasons above I switched the bottle setup with my other 25 cal Marauder.
The power is amazing when I use it on small game and still sounds reasonable in the open field.
Good luck on your .30 cal conversation
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So, Saturday I get my conversion kit from Roy at Mountain Air. I have my .30 magazine already and hope to put it together Sat. One question. Did you have to open the baffles and end cap up a little to accommodate the .30 cal pellets? And if so, what size bit did you use?
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Yes, you have to drill out the baffles and end cap: I can't remember the size but Roy usually sends the instructions. Good luck
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The drill bit size is 11/32. Here she is after the kit. Now what to do about that air problem......http://i577.photobucket.com/albums/ss214/Able_Snider/20161112_134912_zps3xzdj3jr.jpg
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Yeah definitely! My tank ran out of air today putting a zero on the scope and i cant get it filled for a few days so I'm going to have to use the pump. I might have a stroke!
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