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deadrats · Member

I'm shooting rats with a BB pistol and i've been considering a sronger gun because this one isn't dropping them reliably most of the time. Problem is i have so many requirements including and especially noise (noise has eliminated many models including the otherwise great choice of the 2240) that make finding one that fits the bill near impossible. The only ones that do fit the bill don't have near the velocity as my BB. So i'm using a calculator to try and determine which guns will have more by comparing heavier pellets to bb's in the calculator with thier respective velocities.But i am unsure as to how much will be enough to make a difference enough to warrant buying. Mine develops 2.6 FPE. give me a number you think would be enough to make a marked difference in how quickly they drop.

Also, i am estimating pellet velocity by looking at the gun's spec and guessing as to how much velocity it will lose with heavier pellets. obviously not the most reliable way, but do you know of a calculator that will show velocity loss/gain with various size pellets?

fritz · Silver Status Member

Try the 4fpe range. And place your shots better.

deadrats · Member

Ok, well how about a calculator that calculates change in velocity given various pellet weights? From the FPE calculator i found to get 4 FPE i'm probably not going to maintain enough velocity with the pellet weights it takes to do that with the velocities the guns i have to choose from develop. But i can't be sure because if i choose a very heavy pellet i have to be able to calculate how much velocity the gun i consider has with typical pellets. So i can't find a gun to get me 4 FPE w/o a calculator like that. does one exist?

fritz · Silver Status Member

AFAIK your calculator is a pipe dream.

rualert · Member

If noise is a primary concern, check out TKO's website. His muzzle breaks are the cats meow. They can make a stock 2240 sound like almost nothing, I believe I've read some one referring to it as "mouse fart quiet".

Jaxom · Senior Member

The TKO muzzle break has been suggested. One of DR's other requirements was a repeater. This could all be done, by taking a 2240, adding the muzzle break, there's a indexing multi shot accessory, but you would also need a high rise scope mounts and scope in order to use that. All in all you've gone from an inexpensive $50 pistol to a semi modifided $175 one.

rualert · Member

Agreed, but you know how the Crosman addicts are, we can't help it, it won't stop, we need to modify them! Mr. Green

Sorry just had too. I now have 7 Crosman's, and I'm seriously considering another build, and maybe an MROD.

deadrats · Member

fritz · Silver Status Member

DeadRats, now I understand your dilemma fully.

However, I personally see your goals a bit far-fetched for the price point.

deadrats · Member

rsterne · Moderator

Any gun will have an optimum pellet weight.... Generally, the less powerful the gun the lighter the pellet that will give the maximum FPE.... but not always.... There is no simple answer, hence no calculator....

I would seriously doubt if any gun shooting less than 10 FPE will deliver more energy with heavy pellets than standard weight ones....

Bob

Slavia · Moderator

deadrats · Member

Hummm, just a thought.....do pellets with hollow points create better FPE than the calculator says since it only takes into account weight? Or if not better FPE, more damage to any notable degree?

rsterne · Moderator

Hollow points do NOT expand in soft tissue at 4 FPE.... probably not enough to make a difference even at 10 FPE....

Bob

deadrats · Member

I agree, but expanding was not quite what i was thinking. If you enter a weight of 5.1 grains, typical BB weight, the calculator doesn't care whether it's a BB or a pellet, hollow, pointed, whatever. What i was getting at is wouldn't something like a hollow point, or even any other pellet but especially one thats not pointed, do more damage to tissue than a smooth round ball regardless of the FPE the calc tells you? I mean, no shape i can think of could do less damage than a BB, right? It's smooth, round, if it spins as it goes in it makes no difference. pellet on the other hand i would think would rip and tear tissue much more due to the sharp edges, spinning would be worse yet. Maybe a hollow point wont expand, but it seems like it would do more damage than a BB of a pointed pellet that might be less apt to spin. You guys know more than i do on this subject, but this just seems like physics that make sense. Am i wrong here or is there something to it? Do you think a pellet and BB of the same weight would both do the same damage or not?