hw95 barrel smoking
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hw95 barrel smoking
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Topic: hw95 barrel smoking (Read 2394 times))
.20cal fan
Plinker
Posts: 136
yes
Real Name: William
hw95 barrel smoking
«
on:
April 04, 2015, 01:37:22 PM »
Question for everyone since we have a plethora of members available online right now.
I have about 1,000, +/- 100rds, through my hw95. Mike Montes sent me some samples of pellets and today was a good day to try some.
So last night, I wanted to start fresh and cleaned my barrel w/goo gone, ran dry patches till nothing was on the patches. Then I took one patch, put 2 drops of PTFE Silicon Oil on it and ran it through the bore.
I then proceeded to wash and lube some of the H&N FTT's I have which are 5.53 & 5.54mm. On one tin, I lubed about 300 pellets with that PTFE Silicon lubricant. I put a total of 5 drops into a JSB can that has the foam. Rolled them around and round, dumped them out on a paper towel to hopefully take any excess lube off. When I was done, I put them back into their tin w/the lid off. The second tin I lubed them with WD40 Silicon quick drying spray. Now before any and everyone gets on me about wd40, i only did it because it was a almost different type of lube (meaning a spray and it being quick drying). After 2 quick pulls of the trigger, I rolled them around on a paper towel just in case there way any "quick dry lube" left. Put back into tin w/lid off.
So today, I go out, set up a improvised bench (my cousins laundry foldable table), a bench rest (a paint roller with #5 bar through the center of roller, perched on two vertical pieces of wood which is attached to a wood base, with identical holes on each side for height adjustment) and commenced to trying 4 different types of holds per pellet. I shot the 5.53's first but not benched. Just shot 20 pellets through her to season her back up. Now the 4 holds were: 1) Support hand touching trigger guard. 2) second hold was 2 finger widths away from trigger guard. 3) 3rd hold was four fingers away from trigger guard. 4) 4th hold was at forend stock screws. 10 shots per group was what I did. Fired a total of 220 shots. Now when I did the "bench rest" testing, I had the stock on the roller, not my hand.
Now here is my dilema. I am just wondering if you members came to the same conclusion. Certain shots sounded louder than others. Presumption: Left over lube in skirt perhaps. When I would crack the barrel open for the next 10 shots, there was a little bit of smoke coming from the breach end at different times of the pellet testing. Now that wasn't just for the loud shots that took place. It was random. Presumption: Piston seal is/was bad? Did tissue test: Passed. No blowing of tissue.
I thought that it was just from the lubed pellets and because of the possibility of having left over lube in skirts and/or barrel. Some shots were outside of what I had produced before the washing/lubing and then some were very tight grouping. Maybe due to my hold (stock on roller not on my hand) Broke out a borrowed chrony. Did it w/o the diffusers. It was cloudy but I was on a porch w/a roof so I guess it didn't matter at the time. Shot a 10 shot string with one of the lubed tins and she started with normal fps. I say normal meaning from the last time I chronied her, the avg was 712fps. But the string started out at 648 for the low, the high was 740fps and it only went there once. I was about 12" from the chrony. And you could hear the difference too from the 740fps shot. So after the completion of the 10 shot string, thinking that it may be the way I have the chrony set up, I took the chrony out from under the porch roof and did another string. Same tin and the same results almost. I got 2 errors, a low of 664, a high of 814 or something close, a 740, a 680 and then the rest were pretty close to the 664 area. say plus or minus 10fps. I know, I should of wrote it down.
So now I did one more 10 shot string with the diffusers (the plastic things that spread from one of the bars to the next) on. Just a tad more consistent, but not the best either and no where near as high as 800+fps previously stated.
Basically, why do you think my barrel lightly smoked every now and then?
Why such drastic spreads from chrony reading?
So what do you guys think?
1) Missed some lube hidden in the skirts?
2) Improper use of chrony?
3) Bad piston seal?
4) Some hidden/extra lube in barrel that didn't get burnt off
5) Wrong type of pellet lube?
6) Too much lube?
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Coatesville, PA
.20cal Fan
Motorhead
Field Target Shooter .... Stand em up Shoot em down
GTA Senior Contributor
Posts: 17753
2019 GTA Hall Of Fame Recipient
Real Name: Scott
Re: hw95 barrel smoking
«
Reply #1 on:
April 04, 2015, 02:15:43 PM »
In spring piston type actions ... Seldom will / do you want ANY introduced lubrication on pellets or the bore.
Dry and clean will give better overall results IMO.
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Northern California ... Old Hangtown
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Brazos
Expert
Posts: 1168
yes
Re: hw95 barrel smoking
«
Reply #2 on:
April 04, 2015, 03:07:45 PM »
Don't lube your pellets. It is not needed and in a spring gun it introduces dieseling.
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LAalex
GTA Senior Contributor
Posts: 2352
Real Name: Scotty
Re: hw95 barrel smoking
«
Reply #3 on:
April 04, 2015, 10:41:29 PM »
It's the lube dieseling and detonating. If you want to lube, try Krytech chain lube or something similar. Use sparingly and allow adequate drying time. I would clean the lube off the pellets you have and just shoot them for awhile like that to try to burn off the excess lube. Chrony again after you are satisfied that the lube is burned off. You should get some indication then if you have piston seal damage.
Scotty
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Washington, LA
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.20cal fan
Plinker
Posts: 136
yes
Real Name: William
Re: hw95 barrel smoking
«
Reply #4 on:
April 06, 2015, 01:54:47 PM »
Darn motorhead, where were you at when i needed you, lol. If you werent so far away, i would send my rx ti.you.
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Coatesville, PA
.20cal Fan
.20cal fan
Plinker
Posts: 136
yes
Real Name: William
Re: hw95 barrel smoking
«
Reply #5 on:
April 06, 2015, 01:55:58 PM »
Thanks scotty
Logged
Coatesville, PA
.20cal Fan
Motorhead
Field Target Shooter .... Stand em up Shoot em down
GTA Senior Contributor
Posts: 17753
2019 GTA Hall Of Fame Recipient
Real Name: Scott
Re: hw95 barrel smoking
«
Reply #6 on:
April 07, 2015, 01:19:43 AM »
Quote from: .20cal fan on April 06, 2015, 01:55:58 PM
Thanks scotty
Bare actions less stock via USPS coast to coast ship for @ $25 each way
Your Welcome ...
Logged
Northern California ... Old Hangtown
**
Home of MOTORHEADS AG Tuning Services
**
* PM me for further contact & tuning info.
Sacramento Valley Field Target Club
#
https://sites.google.com/site/sacvalleyairgunclub/
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hw95 barrel smoking