RAW Rapid RAW .30 fps sweet spot with 44gr JSBs?

[Joekrooz]

What’s the optimal speed for .30 RAW with 44gr JSBs? I always thought it was in the 800 to 900 range. Don’t remember what it was shooting at when I got it years ago but just chronied this past week and it was averaging 770ish. Seems a little slow to me or am I good?

 

[Ranchibi]

Depends on accuracy. But I would try around 880-900 by increasing HS tension about a 1/4 turn each shot and check accuracy till you hit 880 then it's up to you when to stop increasing HS tension. Reg pressure is usually around 140-150 from Martin or Airforce for all calibers. Yours is shooting a little slow. Shot cycle should be QUICK and SNAPPY .

 

[Joekrooz]

I thought it was shooting mid to upper 800s when it was new, was surprised to see such low fps reading. Haven’t chronohraphed it in years, wonder why the drop . Thanks for replying @Ranchibi ….again!

 

[Chasdog]

I have a couple 30 caliber pcp s. I shoot the jsb pellets and have them both running at 885 to 890 fps. Seems a good speed for accuracy. My Fx m3 came tuned from Utah air at around 900 fps. And my Skout epoch I haven’t changed , it came from Skout shooting at 890.

 

[etiam.viviens]

I shoot my Raw .30 around 925 f/s 282 m/s with 44 jsb (115 joule), I know that it's a bit fast but I shoot all through 1 hole at 80 meters.

 

[Ranchibi]

I thought it was shooting mid to upper 800s when it was new, was surprised to see such low fps reading. Haven’t chronohraphed it in years, wonder why the drop . Thanks for replying @Ranchibi ….again!

Maybe it needs a little TLC from Martin! I actually need to send him my .22 as the sear spring broke and it has been 3 years since he last serviced it.

 

[igolfat8]

I have 2 RAW .30’s. One likes 920 and the other 885. Yes, yours is shooting too slow. See where your shot string drops off the reg. It should be around 150 bar.

 

[Chasdog]

My RAW is a 22. It came from Utah air shooting at 950. I toned it down to about 890 for the jsb 25.39 pellets and shoots the 18 gr. at the same poi @ 1030 fps. The reg came set at 145 and it’s still there.

 

[igolfat8]

Shot one of mine today with AEA 45s. I was off by 8.1 that I posted above. I’ll get a crono string on my other one tomorrow.

 

[Chasdog]

Interesting , I just got some Jts 45 gr. Pellets that seem to shoot better in both my 30s than the jsb s. Took my Skout epoch compact out to my buddy s range the other day to get the dope for my free Kenton turrets for my Gpo compact. Didn’t do the official spread etc. since I was more interested in average speed at different yardages. Anyway looking forward to getting the turret and see if it’s on. FPS around 890.

 

[Cloud9AG]

In my .30cal RAW, I shoot 45 & 50gr AEA pellets at 880-900fps and can easily group 1 MOA at 100yds, and even that small in the wind if I read it correctly.

 

[igolfat8]

In my .30cal RAW, I shoot 45 & 50gr AEA pellets at 880-900fps and can easily group 1 MOA at 100yds, and even that small in the wind if I read it correctly.

I am shooting AEA 45s at 890-ish but can't get the 50s above 840. Did you raise your reg pressure to get them up to 880? I already have 2 washers on the HS.

 

[Cloud9AG]

I am shooting AEA 45s at 890-ish but can't get the 50s above 840. Did you raise your reg pressure to get them up to 880? I already have 2 washers on the HS.

No, I have an extended plenum. The reg is still at 145bar as stock. I don't want to raise the reg, because it will eventually make the shot cycle harsh and not be conducive to long distance accuracy.