in your air gun will it make it more accurate? And why ? Say taking a rws 34 and bringing it down to about 500 /or 550 fps, like the 10 M target rifles will it shoot more accurate? howie
especially if it is a recoilless type.
Spring guns of the twin piston(Diana 75) or sledge type (FWB), are recoilless and give nothing away in terms of accuracy at low (+/- 600fps) velocity.
On the other hand, such low velocity in other types of recoiling guns, calls for a more consistent hold and follow through.
This means such airguns are potentially less accurate, but some accomplished shooters can get quite decent results with practice.
The rifle I am thinking about lowering the fps is now shooting at 915 fps and I was thinking of lowering down to about 550 fps like a target rifle it is now very accurate like one ragged hole with iron sights at 10 m now by lowering the fps the pellet will stay in the barrel longer does this mean that it will be more hold sensitive , I don't know if this is a good idea since the rifle is so accurate all ready. it is a 177 cal. howie
Howie, I Personally think 915 is way too fast for a 177. MO, however I think you will have a lot more fun shooting a gun at 550 fps. It will cock easier and become more of an around gun plus a good 10 meter gun that will really hone your shooting skills.
then you will have to lighten the piston, rifle is made to shoot at that velocity and has a piston weighted for that. If all you do is lighten the spring you will have a forward lunge when the heavy piston hits the front of the cylinder. The classic way to lighten the piston is to drill holes to lighten. The question is to lighten do you use a few big holes or alot of smaller ones, I would go with a lot of 5/16 inch holes, the piston it's self doesn't have a lot of stress on it, only point of pressure is the very front when the spring rides, just have to make sure it doesn't deform from weekness....about 1 to 1 1/2 inches of preload should slow it down to about where you want it....tight guide and top hat are needed to remove any twang as a lighter loose spring will vibrate alot more than a really preloaded one...
My TX200 is shooting about 930 fps and it would be tough to improve upon. The 460 has a smoother spring and is down to 965, and is getting better (or I am with it....). Anyhow, if you have an accurate gun in the 900's you don't have to be as good with range estimating and holdover; there is an increased flat shooting distance.
goes something like;
why dismantle a perfectly good church to build another instead?
IMHO, I would leave that good high speed shooter alone and get a smaller,less potent one.
There probably is not much in it moneywise if you opt for a second hand small 177 airgun, compared to the money you spend trying to get your potent one de tuned to those levels.
You would surely need a new spring and a new (longer) piston for starters.
Most rifled airguns, even garden plinkers in the 550 fps range, can shoot wadcutters with amazing accuracy up to 15m.
