Steady as you go Max.
My goals are not necessarily yours.
I purposely set my springers as I do to be more efficient with express. Check accuracy with express before you chop.
And if you do, chop carefully. You end up in fine territory with a very small amount of change making a big difference.
On another note. The seal in this 280 is black. I thought they were all blue. So thats me corrected
B.A.S.C. member
well being playing with this HW80 in 177 , opened her up and she was dry as a bone ...
Not done too much just a regrease with Abby t2 moly grease and clean out the old stuff etc.. put it back together and put 60 shots through . gun is a little better twang wise , but accuracy is much better
After trying 6 leading brands of pellets AA 4.52 came out tops with a 10 shot group less than 5p piece at 22yards , next best was jsb heavies .. so pretty pleased so far.
Anyway shes still very sensitive so going to do a full clean / polish and put a kit in .... hoping to get 11 / 11.3 ftlb but with possibly a quicker cycle .....
just seen tbt short stroke kits for HW80 ..... would one of these kits help , is it just a straight drop in or does the piston need shortening ???
gonna also replace spring as its not 100% and the spring guide is loose fit . will chrono it (as is) tomorrow at club , but think it may be under as when I tried bisley mags the twang was earth shattering
Thanks guys
It belongs to our machinists dad, he just wants to make it work a bit better. Its currently running at a shade under 600 fps.
In .177
I'm not enthused with the idea, but I have some cracking "before" pics of the rust and stock, so it should show an improvement at least.
My ignore list: <Hidden information>
I have one of TBT's short stroke kits in my 80. It's a simp!e snap on adaptor so no piston mods and you can remove it with no issues if you wish. The only noticeable thing once fitted is a slack spot in the cocking cycle when you first break the barrel. It does improve the cycle once fitted, but you ideally need it in conjunction with a fitted guide and top hat.
The problem with the 280 when compared to the 34 is its piston.
Just to the rear of the seal assembly are 2 indentations which fix the head into the end of the piston but it bulges the piston diameter slightly by approx 0.3 mm out of round....or 0.3 mm across top dead centre of the thickest part compared to the rest of the true piston which is otherwise good.
To ammend this nuisance which causes cylinder wear and and slight noise, chuck the piston along its true area about an inch back from the bulge.....clock it true if needed and skim the bulge off with a Tip tool.
Only takes 10 mins but transforms the gun.
The latest 34 from Steyr has no such bulge and a higher quality finish to the piston.
Both guns need new slide fit guides in Delrin or PEEK....and run beautifully.
I have routinely out shot the equivalent HW95 with the 34 and by a significant margin.
I cannot fully inform as to why this is. Trigger control and let off might just to fall to the HW as expected but the 34 trigger not something that would put you at a disadvantage.
Lock up might just be better ...
Its since the 34 has been put onto a parachute ....its just so improved. Rifling is outstanding.
Try a benched group of 20 mm at 50 mts....now try it with the HW....
The Diana does it despite a less than ideal transfer port too.
Thus my latest tuning project other than a super smooth 580 fps HW45 is to sleeve my 34 s port to 2.8