any NON PCP .177 that can produce close to 30fpe?

[lefteyeshot]

A French ad says the SPA Artemis GR1600W shoots 1380 fps and 40J and that's 29.5fpe. According to Pyramyd's computer a 7.33 pellet at 1380fps is 31 fpe. I want one.

[Back_Roads]

[lefteyeshot]

I see two adjustment screws on the trigger. I saw some ads without the picatinny rail now I see it comes un-mounted in the box. Extra front sight inserts is a plus but I'd scope it. I bet it kick worse than my Beeman Mach 12.5.

Krale has their GR1250S in a plastic stock, adjustable cheek rest, two piece bipod and rails on the side of the forestock, 3x9x40 scope and a big can on the end of the barrel, says it don't do much, 'bout the same price. Recoil might be more manageable.

[Bayman]

A French ad says the SPA Artemis GR1600W shoots 1380 fps and 40J and that's 29.5fpe. According to Pyramyd's computer a 7.33 pellet at 1380fps is 31 fpe. I want one.

Good luck hitting anything with it. Let us know how it works out when your ears stop ringing.

[lefteyeshot]

A French ad says the SPA Artemis GR1600W shoots 1380 fps and 40J and that's 29.5fpe. According to Pyramyd's computer a 7.33 pellet at 1380fps is 31 fpe. I want one.

Good luck hitting anything with it. Let us know how it works out when your ears stop ringing.

And my eyes re-focus and teeth stop rattling.

[Cslinger]

Well .17 HMR is non pcp and produces upwards of 200 FPE. 

[Blowpipe Sam]

A French ad says the SPA Artemis GR1600W shoots 1380 fps and 40J and that's 29.5fpe. According to Pyramyd's computer a 7.33 pellet at 1380fps is 31 fpe. I want one.

Good luck hitting anything with it. Let us know how it works out when your ears stop ringing.

And my eyes re-focus and teeth stop rattling.

I have discovered that magnum air rifles require HEAVY pellets.  My .25 cal Hatsan mod 125 shoots quite pleasantly if I feed it 25.39gr JSB Kings.  Conversely, my .22 caliber mod 125 will give you whiplash with 14.3gr CPHP and it still isn’t entirely tamed by the 21gr H&N Baracudas.  A magnum .177 is gonna need a 18-20 grain pellet or slug to be manageable.  My Hatsans are rather modestly tuned which probably accounts for their ease of shooting.  The .22 will make 25 fpe with CPHP but it will loosen your fillings.  The .25 makes 27 fpe with the JSBs and I can get 29 fpe with 20.06gr FTT  but it’s hard on the gun and on me.

Get a .25 cal wad cutter mold and cast yourself some aluminum pellets.  That’l get you 30+ fpe.

[Back_Roads]

Well .17 HMR is non pcp and produces upwards of 200 FPE. 

Been trying not to type that since this thread started 

[ER00z]

Did anything develop from this?

Earlier today I dug out my 177 Hatsan 135 QE vortex to give a once over. Several years ago I replaced the piston seal, using one from ARH and noticed a slight power loss, but no big deal for a 25+fpe .177, Lol. Only 75 to 100 shots through the gun since. I upped the pressure in the ram slightly and plan to test various conical or "slug" type pellets. Currently have some 12.5gr from Nielsen's specialty ammo. Weather in my area put things on hold temporarily. Just curious how things went, if ever pursued.

[splitbeing]

I don't have the 135 hatsan, but think that is the best bet to achieve this with a readily available gun.

My benji xl is the most powerful .177 springer I have and it loses fpe as pellet weight goes from 10.5 to 13+.

If I wanted to achieve close to 30 fpe, I would add top hat weight to a hatsan 135 until I found the jsb monsters or seneca hunters peaking in fpe in relation to top hat weights.

If I had a hatsan gas spring rather than coil, I'd pump that thing up to max pressure knowing it would break sooner and see what happens, but my money would be on the coil spring and top hat experimentation yielding better fpe than the jacked up gas spring with no top hat.

[ER00z]

I have a Hatsan 135 Vortex in .177 that will do very close to that and may exceed with the right ammo IIR.

OK I shot some .177 NSA 12.5 gr. slugs out of the 135, over the crono, just over legal FT energy with 20.25 foot pounds of muzzle energy at 854 FPS avg.
  Bet them 50 yard shots in the wind will be easier They do fit the bore nice and snug, but can push in with thumb with out extreme effort.

I know this is an older topic, but my findings are very similar to yours with the Hatsan 135. I had a peak velocity of 879fps with .177 NSA 12.5gr, but averaged 867-868fps. The slugs did not fit as tightly in the breech as I prefer, but were just snug.  The shot cycle is one solid and quick thump... if anything a bit too quick, maybe getting possible blow by? Then again, the shot cycle is the same with 10.5gr or lighter pellets, which all seem too light for the forces at work. Initial accuracy seemed promising, but more testing under better conditions is needed. I should add, energy/velocity with pellets were much higher, thinking skirted type ammo might be the way to go vs. dished base. Maybe JSB knock outs?

[Jr007]

Artemis GR1600w - The bore and stroke length 29mm x 130mm. Swept Volume 85.8cc