FX .25 cal FX IMPACT M4- WILL MY OLD TUNE WORK??

[Redwolfpaul25]

Hi all.

having been out of the fx impact scene for the last 18 months, i am thinking of getting a .25 cal FX impact M4 in 700mm, this would mirror what i used to own when i had a M3 in .25 cal ,my question is will my old tune for shooting 41g slugs at 960fps( sub moa @100 yards), get me somewhere in the same ballpark with this new M4? my old M3 was a stock rifle with no internal mods, obviously the M4 uses the one reg but that is the only difference, i intend to keep everything on the new M4 pretty much the same.

old M3 tune - front reg 175bar-rear reg 155 bar- macro 16- micro 4.75-valve 14mm off the block.

 

[Hunter25]

Hi all.

having been out of the fx impact scene for the last 18 months, i am thinking of getting a .25 cal FX impact M4 in 700mm, this would mirror what i used to own when i had a M3 in .25 cal ,my question is will my old tune for shooting 41g slugs at 960fps( sub moa @100 yards), get me somewhere in the same ballpark with this new M4? my old M3 was a stock rifle with no internal mods, obviously the M4 uses the one reg but that is the only difference, i intend to keep everything on the new M4 pretty much the same.

old M3 tune - front reg 175bar-rear reg 155 bar- macro 16- micro 4.75-valve 14mm off the block.

I've found each gun is little different.. the old tune should be close,but maybe not exact. To know,you have to try it,that liner may like the projectile at a different speed also. Even though supposedly the same,each of my liners shoot different,it very difficult to get the index exact. Something that's done be look of eye,when it needs a way of measure to be exactly the same.

 

[Vetmx]

It would be cool to see where those settings put you with a M4. It would have to be ballpark. It’s too late now and I hope it doesn’t bite you but if you truly had a sub MOA gun, you should have kept that liner.

 

[Redwolfpaul25]

It would be cool to see where those settings put you with a M4. It would have to be ballpark. It’s too late now and I hope it doesn’t bite you but if you truly had a sub MOA gun, you should have kept that liner.

My friend has my old M3 but has decided to use the 700mm sup heavy liner instead of the superior liner that i used, i found that superior liner to shoot alot of heavy slugs very well and he said i can have it back once my M4 arrives.