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I started by ordering the kit with tungsten hammer . and it was way too heavy
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So I am now using the Dreamline hammer with the lightest additional weight (the one with a thin skirt)
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it is as accurate as my Redwolf.
Indeed sounds like something very similar to what I experienced.
Hello everyone,
Last time I saw this topic passing by, was more than 6 months ago. Now by coincidence seeing some comments have been added, so I ve been reading up a bit. Feeling a bit surprised that even today some of the .22 Crown shooters would still be tempted to go adding a massive 13 gram weight to their factory Crown hammer.
In recent 2 years have been extensively testing (in my .22 Crown II) 4 different hammer springs combined with some 8 homemade hammer weights varying from 4,5 grams up to 11,75 grams, some in RVS, some in brass; with varying lenghts of the hammer weight bodies as well as varying head hights of the respective weights. Also that latter aspect is a more important factor than one might suspect, at the moment one goes 'breaking into' the Crown's subtle factory balance and the purpose it was intended and designed for : great HP accuracy on a limited plenum, at the same time each shot with high air efficiency .
Today here using a mere 6 gram hammer weight added to the 16 gram factory hammer. The spring used to ‘drive’ this total of 22 gr hammer weight has about a good 10% higher powercurve than the FX 11500 factory spring. This somewhat stiffer spring releases its preloaded energy a fraction of a second faster than the FX 11500 spring, subsequently also returning to ‘resting position’ a tiny bit faster.
This so called 'power spring' is 'sitting' in a 2,75 mm deep seat, milled out in one of the modified spare hammer spring guides I had bought to experiment on. (see earlier post). I have tried several modified models of FX factory hammer spring guides, both with (shortened) hammer spring stem and without stem. Those spring guide blocks with entirely cut of stems always came out of the tests with poorer results, both in terms of shots per fil, as to ES numbers over larger shot strings, hence also in accuracy (over longer strings).
Here ’s why I ‘m today surprised at reading that .22 Crown shooters are apparently using the rather ‘brutal' power kit with a massive 13gr extra hammer weight on top of a 11500 factory spring, sitting on a hammer spring guide body with its stem completely cut of, while at the same time eating away some of the hammer’s travel length due to the large head hight of the used hammer weight :
From the testing I ve done, this sort of configuration proves itself more of a disadvantage than anything else, when shooting .22 in up to 30 grains.
Long story short(er) :
Even at a mere 130 bar regulator setting and with the shuttle screw merely turned out 4,55 mm, still allowing for some serious hammer travel length, my .22 sends off pin probe loaded 25 grain R.Monsters (and H&N slugs) at a max of 302-303 m/s (approx. 995fps). Slightly tuned down to 292-293 m/s (960 fps), both R.Monsters and H&N 25 grain have shown outstanding outdoor accuracy at 100 yards and 100 m.
Turning up reg pressure to 140 – 150 – 160 bar while each time adjusting preload by inserting the appropriate shuttles (each of them with their pre-tested and preset shuttle screws, I have established that shooting heavier .22 lead poses no problem whatsoever, still using the same 6 gram extra hammer weight added on a slightly stiffer spring. Moreover, air usage per shot always remains optimal, resulting in the highest possible number of shots per fil.
Conclusion simply being : there s alternatives for the massive 16 + 13 gram hammer weight 'power kit'.
Imo this kind of 'massive hammer mass' configuration might possibly make sense for those few wanting to shoot heavy .30 slugs at 160-170bar (on an adapted regulator). But when shooting lead up to about 30-32 grains out of a .22 Crown, this 16+13gr massive hammer mass is more like an ‘overkill’ generating more disadvantage than advantage.
Btw, as a last note :
Out of a standard superior, the heaviest lead i m shooting is 25 grain. For those wanting to shoot 27 grain and up, a superior heavy liner is the way to go.
My 2 cents anyway.
But after all is said and done, everyone should foremost do their own. No conviction greater than your own conviction derived from trial and error practice.
Good luck.