by Spey » Fri Oct 08, 2010 12:10 am
Couple thoughts ...
Might want to check the muzzle crown to make sure it has not been damaged (possibly even defective from factory). Dropped just one time is all it takes to damage a muzzles crown; air-gun, powder-gun, etc. Poor muzzle can cause deflection as projectile exits the barrel. Re-crowning might improve this situation.
If it's shooting all over, and it's actually 430fps + then heavier bb's could also help (your original question, I think), especially considering I think you said it really sprays em all over with .12's (way too light for 430fps velocities). If bb's are moving all over, also highly suggest getting some high quality bb's (there's an amazing difference in quality/roundness/consistency between crap bb's and higher grades). It's also interesting that higher grade bb's really don't cost that much more ... Example: TSD Tactical Comp Grade at $16/5,000 vs Crosman's at Wal-Mart prices of $12/5,000. Find youself a piece of flat glass and let bb's slowy roll across about 12"-18" (good bb's roll straight consistently and for consistent distance, crap bb's are like lottery tickets ...).
Suggest you check first to see if the flight direction changes as you fire from various angles 45-90 degrees in either direction from verticle. If the flight path changes (with consistency) then there's probably an improvement plan you can move twoards. If fired from 180 degrees (upsidedown) the bb's fly straighter, then you have a direction to move twoards.
If there's no hop-nub system, you may also consider attempting to re-index the barrel (rotate it 180 degrees, etc. - if possible) to attempt correcting flight induced curve that might be imparted by barrel.
Justa few thoughts related to possibly working with what ya got on hand. Many times there's huge improvements that can be made to mass produced products, if you can just figure out what's causing the issues and make an improvement plan (Crosman pellet guns, both CO2 and pnuematics are an excellent examples of this ...).
BTW, I have not shot the gun you mention specifically - so everything I write could all be crap ... take it for what it's worth, an attempt to help.
Regards,
No honey, that's always been in the safe.