Anyone use the FX .22 25.4's?

[MACTEN]

I know these are JSB of course but I'm not 100% on which one. MKI - MKII . They look like JSB MK II's to me but I don't have any JSB's in this weight to check.
Does anyone know for sure?
Also does anyone push these really fast? Like upper 9's effectively?

 

[JaceSpace1369]

I know these are JSB of course but I'm not 100% on which one. MKI - MKII . They look like JSB MK II's to me but I don't have any JSB's in this weight to check.
Does anyone know for sure?
Also does anyone push these really fast? Like upper 9's effectively?

I'm currently shooting these between 900 and 905 our of my katran and they shoot very well!

 

[Headshots]

This might help .

Some older jsb .

Fx on right. Side by side.

 

[MACTEN]

This might help .

View attachment 456599View attachment 456600

I already have them but not the JSB to compare.

 

[Headshots]

I already have them but not the JSB to compare.

I added the jsb pics . I've had them for a while. So probably the 1st version ? And the fx mk2 ?

 

[MACTEN]

I added the jsb pics . I've had them for a while. So probably the 1st version ? And the fx mk2 ?

They certainly look different. I've never had either .22 MK1's or 2's in .22 only .25 in the 25.39/4's.

 

[MACTEN]

I was wondering if anyone has luck wit them in the upper 900's like 950-990 fps? I looked but can't find anything so far.

 

[Headshots]

The FX 25.4s look like the JBS redesigns to me . I sling mine at 890 fps or so and I'm pleased with the accuracy. Doubt I will go any faster or need more than 45 fpe.

 

[Revoman]

I have been using the FX instead of the JSB branded for at least a year and find them shooting better than the JSB's.
They are less expensive too.
I'm pushing them at a mild 920ish FPS out of an M3, 700mm.

Mike

 

[bdzjlz]

I have shot thousands of them through my FX, Daystate, Brocock, and RAW rifles with much success. 890 to 920 depending upon the rifle seems to be the sweet spot.

 

[carlos_hathcock]

I shoot them at 970 FPS out of my M3. Can get 1 hole at 50 yards.

 

[manabeknives]

the FX 25.39g ,JSB MRD's(the latest edition)and MRD DEEP are made form same dies. The early MRD's are the same as the Shallows.
I have seen people using them in the high 980-1000 range with a slow twist barrel i.e RTI Lothar Walther LR barrel 1:32 twist (too $$$)
I have seen videos of a guy shooting a Skout @ 990 for 50yard BR
What rifle are you using?