In my experience with the 97K and 77K the factory white breech seals are the best. One side is flat and the other side is rounded, the flat side goes in the compression tube.
Out of the box they're twangy, spring vibrations through the stock, this can be fixed with tighter fitting spring guides, usually made from delrin.
If the twangy doesn't bother you, then just shoot it.
They do benefit from a tear down and remove the excess factory grease, usually in front of the piston seal, which causes dieseling and detonation. This can be shot out eventually if that's the route you take.
I like JM springs and making my own guides and spacing to suit my needs. I tried the hornet spring and JM piston seal for awhile. But I ended up using a lighter wire spring .120 and only about 30 to 32 coils, then spaced up to achieve around 830 to 850 fps. With the lighter wire spring there's no need for a spring compressor, I can take it apart and reassemble by hand no problem.
This is very convenient if your testing different spacing and similar springs.
I also ended up using o-ring piston seals instead of parachute or power seals. All my ( 3 under levers) are lubed with Krytox, it doesn't combust.
When accuracy drops off, clean the barrel, also check the stock screws after shooting every time until they settle in. You can blue lock tite them if needed.
There are many other things you can do, if you want to, like trigger tuning, replacing the trigger blade with set back trigger blade, cocking handle grip..etc.
I also ended up switching my scope mounts to the UTG pica-tinny rail, and using pic-tinny scope rings, this made it easier for me to remove and replace my scopes when needed.
I've had my 97K since 2007, and I've been thru it many times and refined my tunes, so these are just my observations, you can shoot the rifle as is
and be happy or experiment and tinker. To me tinkering on my rifles is half the fun of this hobby
and trying different stuff until satisfied with the end result.
Lastly shoot, practice different holds, off the bench with bags, or off of shooting sticks or whatever you prefer. Then when you find what works do the same thing every time, until it's second nature.
Springers are fun, so go have fun, and learn it's do's and don'ts.
Out of the box they're twangy, spring vibrations through the stock, this can be fixed with tighter fitting spring guides, usually made from delrin.
If the twangy doesn't bother you, then just shoot it.
They do benefit from a tear down and remove the excess factory grease, usually in front of the piston seal, which causes dieseling and detonation. This can be shot out eventually if that's the route you take.
I like JM springs and making my own guides and spacing to suit my needs. I tried the hornet spring and JM piston seal for awhile. But I ended up using a lighter wire spring .120 and only about 30 to 32 coils, then spaced up to achieve around 830 to 850 fps. With the lighter wire spring there's no need for a spring compressor, I can take it apart and reassemble by hand no problem.
This is very convenient if your testing different spacing and similar springs.
I also ended up using o-ring piston seals instead of parachute or power seals. All my ( 3 under levers) are lubed with Krytox, it doesn't combust.
When accuracy drops off, clean the barrel, also check the stock screws after shooting every time until they settle in. You can blue lock tite them if needed.
There are many other things you can do, if you want to, like trigger tuning, replacing the trigger blade with set back trigger blade, cocking handle grip..etc.
I also ended up switching my scope mounts to the UTG pica-tinny rail, and using pic-tinny scope rings, this made it easier for me to remove and replace my scopes when needed.
I've had my 97K since 2007, and I've been thru it many times and refined my tunes, so these are just my observations, you can shoot the rifle as is
and be happy or experiment and tinker. To me tinkering on my rifles is half the fun of this hobby
and trying different stuff until satisfied with the end result.
Lastly shoot, practice different holds, off the bench with bags, or off of shooting sticks or whatever you prefer. Then when you find what works do the same thing every time, until it's second nature.
Springers are fun, so go have fun, and learn it's do's and don'ts.
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