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Richard Collett

My Hw77K Review And Future Plans

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To late now but dont bother with ptfe in the future the use plastic milk bottles cant remember what the plastic is called but its more hard wearing than ptfe and cheaper .

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Think my choice there bud would be the Bisley, I think you will find if you used a half tin full and leaded the barrel up, that group would close up even more, that said the field target trophy aint to shabby either.

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Great thread and very informative I am now tempted to have a bash at tuning my hw77 up on another note what are the best fittings to put a sling on the 77 and are they awkward with being an underlever as the 77 is the first underlever I have owned after recently purchasing one second hand.

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Think my choice there bud would be the Bisley, I think you will find if you used a half tin full and leaded the barrel up, that group would close up even more, that said the field target trophy aint to shabby either.

I agree,nice group from the bisley. There now on the try list for my 77k.

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Give the H&N Baraccuda hunter extreme a try too mate, my old 77 loved them, my current pcp loves them too, they are absolutely deadly, drop everything on the spot.

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Do you think a good idea could be to pick my top 3 pellets, jsb, bisley and the H&N. clean my barrel and re test these 3 brands but clean barrel after each test and re zero after every brand? Maybe use 100 pellets to do my test, that way I can lead up each time after a clean then do maybe 5 test groups for each brand. Or do you think that's looking into it too much, just use the tins I have and by the end of them I'll know what's best...I think maybe I've answered my own question.lol I know what's crap, now just play about with the rest of the promising ones and see if I can shrink them groups further and by the end of the tins I'll know what's the most consistent.

 

Obviously once I have found the perfect pellet that will become the only brand of pellet I will use going forward.

Edited by Richard Collett

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Yes mate you could, I would not bother re zeroing though, just shoot for the bull so to speak and check group size (unless you really want to) give the hunter extreme a go too mate.

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After striping the gun the other day to try and add the pfte I chrono the rifle and she had creapped over the 12ft/lb legal limit. The spring had bedded in so I knew that unless I compressed a spring my rifle would always be over. So that night I ordered a blow torch of eBay and I got home from work to receive a little parcel...

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I had been shooting at lunch today and she had been shooting like a dream, so before I stripped her I decided to chrono just to make sure the power she was putting out. (Still wasn't looking forward to compressing the spring so hoped she would be legal...she wasn't 12.34ft/lb)

 

So I begin taking her apart, I don't have a tape measure but tried to show the spring length before I compressed it.

post-104316-0-30264900-1484251600_thumb.jpg

 

I got the blow torch going and started to heat one end of the spring, localising the heat on the part of the spring I wanted to compress, got that part glowing red.

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Once it's this hot the metal doesn't behave like a spring and I could start to compress the end down with some long nose pliers and once I had compressed i then pushed down on a metal service so the spring was level, then dipped into cold water. Cleaned it up with some 600grit wet and dry, re lubed and put the rifle back together. I did not add any power washers when I re built as I was not sure what the power output change would be.

 

So I took a ten string shot to make sure everything was in check,10 shots and the lowest reading was 11.46ft/lb @ 784fps and the highest was 11.75ft/lb @ 793fps. Max spread of 9fps.

 

So with the compression of the spring I only lost half a ft/lb and she's back legal, shouldn't creep back up again. I put off having to do this to the spring because I wasn't confident I would do it correctly and thought I would ruin the spring but to my amazement it was a five minute job and really easy to do.

 

In hinde sight I should have just done this to start with especially as you guys was giving that advise, my confidence that I won't break it has improved so much and I basically know my rifle inside out now and any future maitence should be doddle.lol

 

If I haven't already said it before... I Love this rifle :)

 

Thanks once again for taking the time to read (1400 views...wow) giving me your inputs and advise and making this experience fun to share. I have no intentions of tuning her any more, there is nothing else I can do myself. (Have seen some videos on buttoning pistons and Delrin bands) but that's way past what a home tuner can do.

 

ATVB

 

Richard

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It's a good honest post from a responsible air rifle owner :yes:

 

It's been a joy to read.

 

Well done Rich :good:

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It's a good honest post from a responsible air rifle owner :yes:

 

It's been a joy to read.

 

Well done Rich :good:

Well said, as a non Air rifle owner I been loving this thread and keep checking in to see if it been updated, great to see how the work has progressed.

Edited by Paulnix
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As for pellet testing for your 77, write down the batch numbers off the tin so you can try and match them in future.

 

I got a really good batch of h&n ftt that grouped amazing out to 50 meters, do you think i could find more,

 

Got some more h&n ftt to try completely different grouping patterns.

 

I think it is to do with the dies they use and how old and worn they get.

 

FF

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It's a good honest post from a responsible air rifle owner :yes:

 

It's been a joy to read.

 

Well done Rich :good:

Well said, as a non Air rifle owner I been loving this thread and keep checking in to see if it been updated, great to see how the work has progressed.

Get one mate, you won't be disappointed :good:

 

If you're ever up this way, give me a shout - I've got a few you can try and, there's a really good club local.

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I agree with Jonjon79, I have only just started shooting, less then 6months and I love it and now have a hobbies for life. top bloke jonjon79 even wanting to help you out letting you shoot his pride on joys. Love this sport and some great people involved.

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