New tools

[HW98.20cal]

some tools coming in to do some home tune,

on the hw98.

scope leveling tool to help in stall new Aztec scope, spring compressor to aid in stalling TBT pro tuning kit, v Mach seal, polish piston, and do some de burr ng . Some blueing to re blue where I cut the barrel weight down to install a moderator. Cleaning kit for general maintenance.

 

[Airgun Advisor]

Keep us updated on how it all goes. 

 

[HW98.20cal]

Scope is mounted Aztec 5.5x25 By 50 FFP IR. Scope tool is a dream to use.

cleaning kit cleaned the HW98 till the plastic piece that holds the cleaning patch striped out. Thank goodness not in the barrel where I couldn’t get to it. 

Did not try the bluing yet. Got a practice piece to play with first.

not going to put the tuning kit in yet. Make sure the cleaning and new scope gets checked out first, with both moderators DonnyFL sumo, and weihrach one. 

 

[Airgun Advisor]

Can’t screwup the cold blueing. Just wipe it on. You can also heat up the metal with a hair dryer or heat gun (don’t get crazy) and it may help to speed up the chemical reaction.

 

[HW98.20cal]

Thank you

 

[ranedouglas]

... the cold blue can dull out the finish of the hw bluing , tho... yours seems to have an r10 length barrel (19-20") or maybe it's the ldc on the end... first time ive heard of a tbt tuning kit.... is your .20 hw98 combo as shown in process to be a 12 ftlb - type gun ? i was planning to get a vortek pg2 high output for the .20 r9 i just got (800 fps with 11.4 gr ftt pellets , almost 17 ftlbs - 760 fps with 13.7 jsb , which is well over 18 ftlbs)..... do you have any experience with these tbt maxi pro kits as far power boosters ? - paul. 

 

[HW98.20cal]

Hi Paul, no experience at all with installing anty tuning kits. This is my first experiment. I am a YouTube tuning expert

TBT kits are advertised as England’s number one tuning kit. I’m tryin to shoot for accuracy more than power. If you google tbt tuning on you tube he has some really informative videos. 

Barel lenth is 12 3/8 inches , probably the KDC that makes ti look long.

it currently is shooting JSB exacts at 683 to 685 in a 5 shot string. 



Need to borrow neighbors chronograph again 

 

[HW98.20cal]

 

[HW98.20cal]

Can’t screwup the cold blueing. Just wipe it on. You can also heat up the metal with a hair dryer or heat gun (don’t get crazy) and it may help to speed up the chemical reaction.

Thank you. Cold blueing done . Easy as you said. I even touched up a few scratches on the neighbors R9 

 

[Glenroiland]

Can’t screwup the cold blueing. Just wipe it on. You can also heat up the metal with a hair dryer or heat gun (don’t get crazy) and it may help to speed up the chemical reaction.

Thank you. Cold blueing done . Easy as you said. I even touched up a few scratches on the neighbors R9

Pics, please. Did you just rub the cold blue over the whole area of the scratch? What kind of prep work did you do?

 

[HW98.20cal]

Glenroiland cleaned surface with 91 percent rubbing alcohol . Dumped some of my blueing in the cap, ruined some on with a q tip , let dry. Wipe off with warm white rag . Repeated the process till I was satisfied.

cut the 38 mm piece off with a pipe cutter ( not the best way). 

After bluing

The bluing I used

I got to sight it in after new scope install,

barrel sleeve shorting , external cleaning including inside of barrel. Only can sight in 10 yds where I live. 

Grouped very well ( I am happy) with H&N barracudas .

Next step is tuneing kit. When time allows

 

[Glenroiland]

Wow. That looks great. Never thought it could look so good with cold bluing. 

 

[HW98.20cal]

Well I went on my first home tune adventure.

boy was it an adventure!!!

step one remove scope

 

[HW98.20cal]

Step two remove trigger guard 2 screws

Step 3 remove two fore arm screws and for washes two are serrated 

Step 4 remove recover assembly from stock

Step 5 remove barrel assembly one screw don’t lose two spacer washers.

Step six remove 2 3mm pins holding the trigger assembly in don’t let the safety fly away it’s spring loaded.

I think we’re on step 8 remove 4 square blocks

with an Allen key cut short.

Step 9 install spring compressor. Compress sprig to in lock tab. Then decompress spring . Remove spring compressor 

remove spring. Remove spring piston. Remove any spacers and washers from inside of piston

Remove cocking shoe, don’t loose square nut.

not sure what step were on( tired going to bed)

were almost to the disaster I created. 

 

[HW98.20cal]

ove piston, remove shims and weights from piston. De burr every thing , re blue , polish piston.

Assemble piston with TBT stroker kit , check fit of striker kit , install vmach seal.

Reassemble !

this was was where it went wrong ,

min staling the piston it was tight , I was hangry and gave it some assistance with a hammer . Everything got wedged in their good.

had to cut the seal totally destroyed it and the stroker piece.

got it all back together used the origilal seal fitted the TBT guides in the original spring reassemble the whole thing.

had some grinding sounds before full compression .

mechanically de coked it and had some squeaking going on. Didn’t think it was safe to fire.

gave up for the evening. Tore it all down this morning flipped spring 180 degrees cleans and regressed piston. Reassembled cocked and manually de cocked . No grinding or squeaking. Test fired and all I’d good . Shot cycle is smoother lot less kick no spring twang . I am happy with the results! 

Now just need to sight in and put on the chronograph . See joe Acura you and power is . What a learning experience. Yes I would do it again with the knowledge gained.