What is a steroid gun? Sounds like something that would get you kicked out of the Olympics for failing a drug test.
Rick H.
Rick H.
Upvote 0
Sheridan Steroid Pumpers - Sheridan Benjamin Crosman
- Thread starter Bear-of-Grayling
- Start date
That is an upgrade done by Tim McMurray, of Mac1 Airguns.
In the early C models:
He modified the pump linkage for adjustability, then sets it to its tightest tolerance
He modifies the valve and the transfer ports.
In the later models he modified the pump handle leverage.
Upvote 0
That is a beautiful rifle, but I wouldn't think Tim or Mac1, had anything to do with the wood work on it. Whoever it was, somebody went all out on that guy.
Upvote 0
I like my un-steroid Sheridan 3 to 4 pumps is all i do . wouldn't mind shooting one sometime .
Upvote 0
Thank you. I didn’t build it however. Someone made this special rifle and I am blessed to be the next caretaker. It’s a Steve Corcoran stock.
Upvote 0
The 392 & 397 are discontinued. Of course the C9,( .20 caliber) has been gone for a while now.
Upvote 0
Has anyone here had the steroid procedure done lately and could share what is costs? Also, how long it takes to be completed? If memory serves and it doesn’t, when I talked with Tim at Mac1 earlier last year the procedure would cost around $275. Does this sound right? I never write things down because I’ll remember them.
Upvote 0
Of course. That makes sense it's a Corcoran... every time I see his work I drool.
On a sidebar I'm always looking for caretaker opportunities like this beautiful pumper hah!
Upvote 0
I don't remember the amount, and I had extra work done like the receiver resoldered. So it was expensive. Unfortunately it went back twice under warranty, and still doesn't function properly. I spent a lot on shipping during that mess and it still needs to be fixed. Tim didn't pack them as well as I did, and I had damage the last time he sent it back to me.
I never understood what he did to my trigger spring?
Upvote 0
Amazing pumper @BOG.
Mac 1 website looks to be down. From the research I used to do on his website I believe the mods to the best of my knowledge where as follows
Billet pump arm
Billet front plug
Adjustable pump piston
pump arm moved back for added leverage
Trigger polish mod for lighter pull
Valve volume increase
2 spring valve mod to reduce pump effort
I did the mods at home and got my 392 shooting at 740 fps with 15.49 pellets.
Mac 1 website looks to be down. From the research I used to do on his website I believe the mods to the best of my knowledge where as follows
Billet pump arm
Billet front plug
Adjustable pump piston
pump arm moved back for added leverage
Trigger polish mod for lighter pull
Valve volume increase
2 spring valve mod to reduce pump effort
I did the mods at home and got my 392 shooting at 740 fps with 15.49 pellets.
Upvote 0
This 392 was converted to Steroid with the extended billet I guess about six years ago. It does 715 fps with eight pumps and 800 fps with twelve pumps shooting CPHP pellets. I use it for hunting rabbits and squirrels and offing various pests. I think the biggest critter it has taken was an armadillo (that was digging holes around my barn) a few years back, head shot.
I have a Crosman 140 from childhood but always wanted a Benjamin. I was in Academy and there were four on the shelf and marked down from regular price, I picked out the nicest one and took it to the counter, it rung up $34. I told her that was not right and she said it was. I asked again and the assistant manager confirmed they were on store closeout. I went back and got the other three. One to my sister, one to the neighbor boy and two for me.
I have a Crosman 140 from childhood but always wanted a Benjamin. I was in Academy and there were four on the shelf and marked down from regular price, I picked out the nicest one and took it to the counter, it rung up $34. I told her that was not right and she said it was. I asked again and the assistant manager confirmed they were on store closeout. I went back and got the other three. One to my sister, one to the neighbor boy and two for me.
Last edited:
Upvote 0
Yeah, the spring looks kinda mashed. But looks like you have some kind of sear engagement device? Maybe has something to do with that.
Upvote 0
I didn't even remember making that. It is half of an exacto knife blade mounted with an adjustable screw, used to limit the sear engagement in an effort to reduce creep.
I removed that and the creep by changing the trigger out.
Upvote 0