OldFartFarmer

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    OldFartFarmer
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    brian_null

    The "Magic Number" is 671… at 671fps the pellet weight in grains equals the foot pounds of energy. (slower = less, faster = more)

    (example) If you shoot a 18.5gr pellet at 671fps, you would be generating 18.5 ft lbs of energy at the distance the pellet crosses the chrony. 

    As the pellet goes down range it will loose velocity and therefore energy. 

    so when some on here send out there rifles, is this what they do when they say they tune it to a specific pellet?

    they find the 671fps for that favorite pellet 

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    OldFartFarmer
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    sonny

    He who asks a question is fool for the day but he who doesn't is fool for a lifetime. I believe  pyramyd air has a fps to ft/lb conversion chart free online.

    yes ive been using it,

    but im still confused on the information I have on the different pellets

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    OldFartFarmer
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    so after i calculate the different pellets,I do get the average and the spread,

    what am i looking for?

    and now ill go back and look for that magic number

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    OldFartFarmer
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    thanks all,

     

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    OldFartFarmer
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    Im not going to find a perfect pellet until i get outside, and im shooting further out,

    but im old, and its cold out there,

    and ive a nice warm woodstove down here in my cave :)

    so im gonna keep trying for holes in one

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    OldFartFarmer
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    here 5 shots each, into a wrapped book hanging on my wall at 18 feet, doing good up and down

    but havnt got my side to side locked in yet im wiggling too much,

    using the top of my desk and a caldwell front rest, and sitting at my swivel chair jacked up all the way, too loose-goosy,,

    but dang im having fun, Had one flyer, saw a nice looking visitor on Fox news,,broke my concentration

    ,

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    OldFartFarmer
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    so whats the heaviest pellet you can shoot and not wreck yr internals?

     

    I thought my 18.52g was heavy

    and here you are shooting 21.14 out of yours

     

    im learning more all the time,

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    OldFartFarmer
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    this is what I have on my desk now,

    Premier 14.3gr (5.5) Hollow point–2 cans of 500

    JSB Match Diablo Exact 14.35gr (5.5) 1 can of 500

    RWS Superdome  Field Line 14.5gr (5.5) 1 can of 200

    H+N sport Baracuda Hunter Extreme 18.52gr ( 5.5) 1 can of 200

    coming on the next truck- JBS Diablo Exact 15.89gr( 5.52) 1 can of 500

     

    are the 18.52 H+N too heavy in my HW97?

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    OldFartFarmer
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    GoldenStateAIRGUNer

    Your last shot velocity of 333 fps only translates to 3.5 ft/lbs

    typo– I fixed it

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    OldFartFarmer
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    who is JM do you have a link?

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    OldFartFarmer
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    intenseaty22

    Accuracy will always trump power and pellet weight. Now, if your gun can shoot the Polymags with MOS accuracy, them squirrels are toast. 

    just bookmarked them–THANKS

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    OldFartFarmer
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    never mind,,,i was wrong, they both come with washers in the kits,,

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    OldFartFarmer
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    intenseaty22

    You will get different advice from different people, but the general consensus is that these guns take a tin or so to settle/brake in. 

    Some folk like to tune right away, some don’t. If/when I buy a 97 I will tune it right away with a sub 12 fpe Vortek or similar. But, that’s just me, others are very happy not touching a thing.

    yes, get a variety of pellets. The journey is fun. 

    what is a sub 12fpe vortek,, is that the one SHO–without the washers?

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    OldFartFarmer
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    intenseaty22

    John. Do you own a chronograph? It’s a great tool for this sport and others. The gun’s accuracy is unlikely to be different with the Vortek. It’s also a relatively cheap part and easy to do and undo. Worth the trouble and expense (to me) if even only to find out if you like it or not. Once you do it the first time, the next twenty is no big deal. Just replace it back. 

    Depending on vendor policy, you may loose the warranty on the gun, but, it really isn’t rocket science. There’s plenty of tutorial videos out there, and plenty of folk here to guide you along the way. 

    Im getting a Caldwell one next month,

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    OldFartFarmer
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    Folks complain of theres being "Twangy" im sorry i dont get it, the only noise i hear is the cast iron frying pan ringing,,

    and its a whole lot quieter than a 45-70, when i shoot 200 rounds a day for 3 days, and so much nicer on my shoulder and neck,

    and no ear-muffs required 

    I dont care about sound,

    I do want to buy a backup system to have on hand, or put in a system and keep the original for backup,

     

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    OldFartFarmer
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    so as ive just got his rifle,

    do i shoot it with a variety of pellets? untill i find a pellet that gives me a hole in one?

    then go for a tune with that weight pellet?

     

    or do i tune then find my pellet?

     

    I dont care about fast and furious,, i shoot and load 357 and i load in the low range because it throws the lead more consistently into the "X"

    i shoot a 45-70 trapdoor original BP in competitions an yup we lob then down range, but with the right load, lobbing is consistent 

    I just want to get the cart and horse ,ducks an chickens all in the right order

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    OldFartFarmer
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    so now im even more confused,

    if i shoot a certain weight pellet, and find its a hole in one,

    then do a vortek SHO spring kit, am I starting all over to find a hole in one pellet?

    how do you figure if you want to use the washers 1 or 2 or none?

     

    man, and i thought loading and shooting for groups with a 357 Magnum was driving me nuts

    this is a whole new beast to figure out,

    but maybe i can give you guys here some laughs along the way,

    as i beat my forehead on my desk,

    is there any googling to find vids on the how and why and matching up of weights?

     

    John

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    OldFartFarmer
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    talked to them on there "Chat"

    ,

    stock rifle/spring is not set up for a specific pellet or weight.

    the SHO Vortek kit is for a specific pellet and weight. (would not explain washers, told me only a qualified tech could set it up,,i cry foul here, I know i can take it apart and do it,

    im not a certified gunsmith, but ive worked on them for years, just now pellet rifles, but ive seen the vids, not much to it)

     

    he told me my rifle would shoot pellets from 10g – 16g  one time, then 12g-14g another time,,,,make my mind will ya?

    also cornered him on the 750FPS–told me it was a 14+g pellet,

    asked him if i shot a 15.35g pellet it would be slower,,he said yes,

    then asked if i put a SHO kit in it would i up the FPS and how many washers would i use,,,he got edgy,,we lost the link,,,go figure,

     

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    OldFartFarmer
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    heres where i got it,

    ,

    https://www.pyramydair.com/s/m/Weihrauch_HW97_KT_Air_Rifle/4398#8526

    ,

    max volocity 750 fps is all there telling me

     

    so the SHO with NO washers would give me "original" specs,  thank you this is what i was looking for,

     

    now–why would i do 1 washer

    why would i do 2 washers?

    sorry for my ignorance im new at this springer-pellet rifle stuff,

    but thank you for putting up with my stupidity and being kind enough to explain it to me

    John

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    OldFartFarmer
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    factory parts yes, but what FPE  is the factory parts putting out ?

    does either of the vortex kits give me factory FPE ?– same FPE as when i bought it new ?

    higher AND lower FPE ?

    im only interested in the vortex kits,

     

    thank you

Viewing 20 posts - 1 through 20 (of 34 total)