22MK1,
They are total garbage. They are just about the most inaccurate pellt made. Unless you are hnting with a very high powered PCP airgun, hollow points are pretty nuch a joke because they loos so much of their energy downrange that they don't expand.
Sorry but you're wrong there. I shoot a Beeman Crow Magnum IV in .20 and the Crwo Magnum pellet expands quite nicely. The pellet I retrieved from the turkey I killed last fall, at a range of 45 yards, had expanded to almost .40". Fireing .177 Crow Magnum pellets out of a Crosman 1377, we're talking under 400 fps., at a wood rat at just over 25 yards was recovered and had expanded to near .25". The wood rat didn't move over a few inches after being hit in the chest. I have done the same thing with Silver Jets and the rats run off. Strightshooters states that they believe that a domed or round point pellet is good for hunting because
round-headed pellets have the highest ballistic coefficients of all the pellet shapes, making them a great choice for pest control and hunting.
actually they act just like a solid in a centerfire cartridge.
They don't work anything like Nosler ballistic tips becaue they aren't doing 3,000fps!!
When I wrote that if they worked like Nosler Ballistic Tips I meant it to mean that maybe they would open up very quickly thus killing birds, such as crows and the like, very quickly. Ballistic Tips and others of their kind don't work at velocities over 2850 very well as they go to pieces if you hit a bone. These bullets do not have a good reputation with the hunting community as in higher velocity cartridges they dont penetrate. Id be glade to discuss the merits of polymer tipped bullets with you through PM messages as a discussion like that doesn't belong here.
I have been hunting with pellet rifles since I was a kid(10 years old) and after over 40 years I have come to a few conclusions.
1.) Squirrels are about the hardest of critters to kill quickly and cleanly. Thank god they arent carnivorous and weight around 500 pounds. Humans wouldnt be safe in the woods.
2.) To kill quickly and cleanly you need expansion and penetration.
Sure a hit in the head or like area does the job but Im talking about body hits only. You wouldnt hunt deer with solids so why hunt rabbits and the like using a pellet that doesnt expand. And as far as accuracy goes we, the wife, son and I, have no problem keeping Crow Magnum pellets grouping around a half inch at 50 yards. Hollow point pellets ARE accurate and they do the job.
Using the data from StraightShooters, a .177 Crow Mag weighs 8.8Gr and taking a velocity of 400FPS and punching it into the energy calculator at
http://www.airguns.net/calculators.html
it comes out to 3.12FPE at the barrel. With it's ballistic coefficient, that doesn't leave much left at 25 yards but I couldn't find a rifle on SS's site that only does 400 FPS in .177 to get a figure.