New Benjamin 397 holds air
Select Gate
READ GTA FORUM RULES BEFORE POSTING
GTA Forum Help Desk
GTA Announcement Gate
Dealer Area
GRIP
AirgunWeb Airgun Videos
Airgun Repository of Knowledge
Vendors and Vendor Videos
AirGun Expo 2021
Airgun Expo 2022
Contests and Giveaways!!!
Welcome New Members
In Memoriam
GTA Contributing Members
Shot Show Videos
Hajimoto Productions
Airgun Detectives
Air Gun Gate
BB Guns and Such
"Bob and Lloyds Workshop"
American/U.S. Air Gun Gates
European/Asian Air Gun Gates
PCP/CO2/HPA Air Gun Gates "The Darkside"
Air Archery
Vintage Air Gun Gate
Air Guns And Related Accessories Review Gates
Hunting Gate
Machine Shop Talk & AG Parts Machining
3D printing and files
Buyer's, Seller's & Trader's Comments
Bargain Gate
Back Room
Target Shooting Discussion Gate
Target Match Rules
Shooting Match Gates
Field Target Gates
The Long Range Club
100 Yard Match
Discussions By States
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
Home
About
Help
Old GTA
Gallery
Search
Stats
Login
Register
Advertise Here
GTA
»
All Springer/NP/PCP Air Gun Discussion General
»
American/U.S. Air Gun Gates
»
Crosman-Benjamin Air Gun Gate
»
New Benjamin 397 holds air
« previous
next »
Print
Pages: [
1
]
Go Down
Share This!
Author
Topic: New Benjamin 397 holds air (Read 229 times))
benji397
Plinker
Posts: 269
Real Name: Mark
New Benjamin 397 holds air
«
on:
June 28, 2022, 08:18:41 PM »
This is practically new, bought back in December. Today I just discovered it will hold a little air starting at 3 pumps. I read several old posts from Avator, Longhunter and others about this and some suggested fixes. I did a quick investigation and found that there is some paint overspray in the tube where the Hammer travels but didn't do anything about that yet. When I first got the gun, I cleaned the paint from the barrel and compression tube but didn't think about paint being where the Hammer is. I'm guessing, hoping that will cure it. I just don't like the fact that it is holding air.
Logged
Wilmington, OH, USA
DanD
Nod and smile.
GTA Senior Contributor
Posts: 4476
A solid maybe
Real Name: Dan
Re: New Benjamin 397 holds air
«
Reply #1 on:
June 29, 2022, 01:37:08 PM »
You can try to use the air retention to your advantage and pump less on subsequent shots. For example, maybe your gun would shoot 700 fps on 7 pumps the 1st shot, but still make 700 fps on only 4 or 5 pumps for subsequent shots.
I have a C9A purposely setup like this with a debounced hammer. IIRC it makes around 630-650 fps on 6 pumps from empty, and continues to make that velocity on 3 pumps for subsequent shots. It's great for hunting, but those 3 pumps are pretty stiff for plinking.
Just a thought, but I totally get it if you prefer the thing to dump. Just shorten the exhaust valve spring a little (not too short or the gun won't cock) if cleaning the paint out of the hammer area doesn't fix it.
Have fun!
«
Last Edit: June 29, 2022, 01:39:55 PM by DanD
»
Logged
USA, upstate NY
Print
Pages: [
1
]
Go Up
« previous
next »
GTA
»
All Springer/NP/PCP Air Gun Discussion General
»
American/U.S. Air Gun Gates
»
Crosman-Benjamin Air Gun Gate
»
New Benjamin 397 holds air