GTA
General Discussion To Gateway To Airguns => Gamo Gate => : redroush00 February 15, 2010, 12:30:38 AM
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The Crossmans i got seem to fit pretty snug, morso than others Ive tried. They seem to be accurate. Dont all pellets eventually tighten up down the barrel from the air compression, flaring out the skirts anyway? Am I losing FPS right off the bat due to the snug fitting aspect? I primarily hunt so a good balance between weight and speed gives good impact ratio. Should i move on and find one that goes in a little easier but has the right speed and weight?
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Red, - that's always been a concern of mine too. When you really have to "push a pellet" into the breech, - it HAS to take extra energy to fire (break free) that thing. I'm not going to pretend to have the answer, - but a drop in velocity seems VERY likely, and probably some effect on accuracy also.
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The whole flaring of the skirt for compression happens anyway. Im just wondering if a tight pellet just eliminates that initial flaring? Maybe by the time it leaves the gun they are all that tight anyway?
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How does it shoot them? My RWS24 is a tight fit with Gamo Match but it seems to like them a lot. Better a tight fit than one too loose.
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All 3 of my guns shoot them well...how often does that happen? They are snug in my Big Cat, Tight in my Hunter Sport and just right in my Ruger. Could i have done the impossible and landed on one hunting pellet for all my guns!!!
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For sure the tight pellets will make you lose some fps. I would rather have a pellet that`s not too tight but with a soft skirt so it catches the air and form a perfect fit. I`ve had...still do...some Gamo Tomahawks that had terrible quality control. The shape are fine, it`s just that some are very tight fitting (Break a nail kind), some perfect and some very loose....and their skirts are hard. Very inconsistant even only out to 10 meters. When I tested them a long time ago.....each sort had a different point of impact.
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On all of my break AG's I used a honing stone I got from Harbor freight and hand turn it then finished it off with the round polishing stone. Pellets just glide in and if your push it further it's still tight. With that done, don't have to worry about distorting skirts when loading.
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Pick up a chronograph and find out which pellets shoot the fastest out of your rifle. Then out of those fast pellets, narrow it down to ones that shoot the tightest groups.
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Leo made a good suggestion on honing the breech out a little. I've done the same on some of my rifles with great results. It doesn't take much, just enough to knock off the factory edge. I don't care for a really tight fitting pellet at all.,...no matter what brand,...but it never hurts to try a few different pellets. The RWS Super-Domes are about the best 'all-purpose' pellets going. The QC is much better than most econo pellets, and at 8.3 grains, they are an excellent pellet weight for 1000 fps rated shooters. tjk
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Yes, flaring out the rough edges of the breach is a great idea. I did it to my NPSS, but I also purchased the Beeman pellet seating tool. Instead of using the conical end to push the pellet too far into the breach, I used the ball end to seat the pellet just beyond the breach face. As for flaring, what I used was the small conical sanding tip that is available for the Dremel. Use just your fingers and slowly and carefully turning the tip against the breach edges, making sure the flaring is even all around. Make sure you shove a cleaning pellet with a few drop of pellet gun oil, about 1/2" down into the breach so metal filings don't fall into the barrel. Then when you're done, take a rod from the muzzle end and slowly push the cleaning pellet back out the breach. The oily cleaning pellet should trap any metal filings as it comes back out. You don't have to do too much flaring of the breach; you'd be surprised how much of a difference 2/1000" makes.