hold sensitive question

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I'm a 40+ yr powder burner, new to airguns. I have a Crosman Fury springer that I did a home tune on. It shoots very well, but is still hold sensitive even with the stock stuffed with leather scraps to deaden sound and lead weights (45acp cast bullets) to add weight. Now it makes a solid thump instead of the awful sproinngg it used to make.
Here's my question: Do different pellets affect hold sensitivity differently? It seems to me that some pellets I shoot are much more forgiving than some other pellets in terms of hold sensitivity. I often slip back into my wicked powder burning ways and cram the buttstock into my shoulder. Some pellets let me get away with it only opening up the groups slightly. Other pellets go all over the place if I just touch the buttstock to my shoulder.
Maybe it's just me. Maybe I just haven't got the "zen" of airgunning yet.
 
Yes definitely and the weight is not the only factor, some pellets fit tighter or looser and you can hear the difference in vibration etc.. I find the the pellets that give the highest velocity usually are more accurate and I think its because they fit better so they exit the barrel sooner and reduce the time to be affected by recoil. Of coarse if they are poor quality pellets then their inconsistency shows. I had the experience lately that several pellets that were under 8grns were actually slower than some 8.4 and 8.6grn. pellets and by up to 100fps for one brand and there was quite a difference in felt recoil and vibration. How firmly you hold the rifle makes a difference because if there is anything out of balance or pulling one way or another it will be magnified by the recoil and with most spring powered rifles the recoil occurs before the pellet leaves the barrel, the hold that is most often discussed for springers is the artillery hold in which the fore hand doesn't grip the rifle at all, you just want the rifles recoil to be in as straight a line as possible even using a rest it helps to have the hand between the rest and rifle, thats why bipods don't work for springers as well unless they are perfectly perpendicular to the barrel so that any recoil that moves them keeps the travel parallel to the target. If this helps.
 
Thanks Garmic. Good explanation. I have been using the artillery hold, but sometimes I get sloppy. I also find that the Fury at 960fps is much more hold sensitive than my home-tuned B3 at 650fps. (both chrono'd)
 
Gamo match chronos at 960, crosman pointed at 950, stoeger X-match (N&N rifle match) at 920 crosman destroyer at 940. I have some heavier pellets but I haven't had the opportunity to chronograph them yet. Too damn cold. Most accurate is the stoeger.
The tune I did on the Fury consisted of a spring polish, double delrin thrust washers on the top hat and spring guide, piston polish and re-lube. I have a well-equipped shop (lathes, etc) that I have built up over 40 years of powder burning. I didn't gain any velocity, but it sure is more shootable now. It still has a little twang, but with a synthetic stock, I probably won't be able to get rid of it completely. It's a cheap gun I bought in the US for $70. I don't expect it to shoot like a Weirauch(sp?) Sure is fun though.
To tell you the truth, I'm considering swapping out the spring for one that will give me a little less velocity. My tuned B3's are a pleasure to shoot at around 600-650 fps. Not really hold sensitive and shoot pretty much any pellet under 8 grs to the same point of impact.
I read somewhere that for an airgun to shoot smoothly, it should weigh about what the fpe is. Eg. The B3 weighs about 6 pounds and has 6fpe of energy. The Fury weighs about 8 pounds with the scope and lead weights, and shoots at about 15 fpe. I guess tha's why it's like a tempermental racehorse.
 
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I had a tuned Crossman phantom (Charlie tuna trigger, Walther airgun scope custom spring etc etc) to about 700fps, always had a pretty good results from the Crossman premier hollow points from crappytire.

also found that I had the most accurate results off my friends back deck just resting the rifle off the rounded shape of his bbq lid (which almost matched the shape of the bottom of the rifle stock) Folded a beach towel as a bag over the top of the bbq lid and just let it 'hop' as it wants to when shot. `could hit pennies at 30ish yards within a shot or 2 and beer cans at 50 yards no problem.

**edit** just thought about it, and on days like we've had this year I'd turn the bbq on real low and have a real nice warm stand-up shooting bench! ...with a few hotdogs warming inside!
 
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The Crosman hollow points are worth a try, right now they are the most accurate pellets at under 50yds for my .22 and ,177s, JSBs are good but not never lived up to their hype, I also have good luck with the Stoeger X-fields.
 
I have found the stoeger X-Match excellent. I understand they are a re-branded H&N rifle match. They will stack in the same hole at 20 meters out of the fury.
Funny I haven't tried the Crosman Premier Hollow Points, everyone says they shoot well. Tomorrow it's off to crappy tire.
 
in my opinion the pellet absolutely influences the hold sensitivity. I figure it is something like when the benchrest guys are doing ladder tests- when you get the sweet spot you have much more margin for error. With airguns, all you can change is the pellet- so find something that works the most reliably for your particular gun. It is a pain to find what works, but buy a sleeve or two when you do! I have some that work best with cheaper crosmans and then others that really need JSB's to reach their potential. Feed it what makes it happy!
 
I have been doing just that. I actually found that the pointed 9.6 gr pellets from tool town shoot really well in the fury. I bought a few tins of crosman premier hollow points and they shoot as well as everyone has said they do. Funny, the domed pellets from tool town won't keep 4" at 15 meters in any of my air guns. The pointed pellets will stack at that range, but only out of the fury.
This is worse than 22 rimfire for picky ammo!
Damn. Another shooting addiction. Good thing I'm retired.
 
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