I own a RTI P3 performance, which is an amazing gun, incredibly easy to tune & accurate, so when all the hype about the Mora first started I already knew that was going to be my next purchase, a 700mm in .25 calibre.
The first Mora I received had a badly etched serial number, so I couldn't put it on my firearms certificate, back that went & then I had a very long wait to receive another one.
My new gun finally arrived on the 14th of February & was the new version with the pneumatic hammer system, I brought a series of slugs, ZAN 45grn, Zan 41grn, H&N 36grn, H&N 46grn & others. I was favouring the ZAN 45grn knowing that many of the YouTube guys & airgun forum members were having amazing success in their .25 700mm Mora's.
After a barrel clean I sat down at my bench to start zeroing & tuning, with an FX Ballistic chrono, no matter what I did, including following advice from many other shooters, the owners manual, etc & trying in vain to reach out to RTI themselves. I Could not get the gun to group. So I decided to borescope the barrel, the crown appeared very shallow & not what I would of expected from a LW barrel, also the rifling was badly cut & uneven.
So back to the distributors, Highland Outdoors & credit to them, they agreed with me on the barrel & swapped it out for a new one. I now have the gun back, accuracy is slightly better, but when I say slightly I mean golf ball sized groups at 50 yards, compared to tennis ball sized groups with the previous barrel. Also velocity was inconsistent, no matter what reg setting or valve setting.
So off I go to try to find & resolve the issue, things I tried include.
The obvious, multiple reg settings & valve settings.
Adjusted seating depth/head space.
Swapped optics.
Replaced slug probe oring.
Checked transfer port alignment.
Checked optics rail.
Re-indexed the barrel.
Borescoped barrel (crown is still shallow, but rifling is ok)
Used the bore scope to check for internal baffle strikes.
Weighed & sotted the slugs.
Checked over by my gunsmith (50 years of experience.
Got two others to shoot the gun.
Put the gun in a lead sled.
Believe me whatever your going to suggest ive tried it already
I fitted a digital gauge to the reg, to see if it was fluctuating (hard to tell sometimes with an analogue gauge), but its pretty consistent, although im having to run my reg at 170 bar, compared to others running 150bar to get the same velocity these guys were shooting the ZAN 45grn at 990/995fps.
My valve adjustment can be full closed or full open & anywhere between it has zero effect on speed, consistency, accuracy, etc, etc.
And believe me it's shot over a thousand slugs though it testing different combinations. And im no idiot when it comes to airgun tuning.
I did purchase this gun with the idea of getting into benchrest, but I have to say im very disappointed & disheartened with the gun & the whole experience. It pains me to write a negative piece on this, especially considering the huge success everyone else seems to be having. I guess I just got that one bad gun. I'm hoping RTI Arms / Rok may see this so the £2300 I've paid wasn't in vain & they step up as a reputable company & get this gun replaced.
The first Mora I received had a badly etched serial number, so I couldn't put it on my firearms certificate, back that went & then I had a very long wait to receive another one.
My new gun finally arrived on the 14th of February & was the new version with the pneumatic hammer system, I brought a series of slugs, ZAN 45grn, Zan 41grn, H&N 36grn, H&N 46grn & others. I was favouring the ZAN 45grn knowing that many of the YouTube guys & airgun forum members were having amazing success in their .25 700mm Mora's.
After a barrel clean I sat down at my bench to start zeroing & tuning, with an FX Ballistic chrono, no matter what I did, including following advice from many other shooters, the owners manual, etc & trying in vain to reach out to RTI themselves. I Could not get the gun to group. So I decided to borescope the barrel, the crown appeared very shallow & not what I would of expected from a LW barrel, also the rifling was badly cut & uneven.
So back to the distributors, Highland Outdoors & credit to them, they agreed with me on the barrel & swapped it out for a new one. I now have the gun back, accuracy is slightly better, but when I say slightly I mean golf ball sized groups at 50 yards, compared to tennis ball sized groups with the previous barrel. Also velocity was inconsistent, no matter what reg setting or valve setting.
So off I go to try to find & resolve the issue, things I tried include.
The obvious, multiple reg settings & valve settings.
Adjusted seating depth/head space.
Swapped optics.
Replaced slug probe oring.
Checked transfer port alignment.
Checked optics rail.
Re-indexed the barrel.
Borescoped barrel (crown is still shallow, but rifling is ok)
Used the bore scope to check for internal baffle strikes.
Weighed & sotted the slugs.
Checked over by my gunsmith (50 years of experience.
Got two others to shoot the gun.
Put the gun in a lead sled.
Believe me whatever your going to suggest ive tried it already

I fitted a digital gauge to the reg, to see if it was fluctuating (hard to tell sometimes with an analogue gauge), but its pretty consistent, although im having to run my reg at 170 bar, compared to others running 150bar to get the same velocity these guys were shooting the ZAN 45grn at 990/995fps.
My valve adjustment can be full closed or full open & anywhere between it has zero effect on speed, consistency, accuracy, etc, etc.
And believe me it's shot over a thousand slugs though it testing different combinations. And im no idiot when it comes to airgun tuning.
I did purchase this gun with the idea of getting into benchrest, but I have to say im very disappointed & disheartened with the gun & the whole experience. It pains me to write a negative piece on this, especially considering the huge success everyone else seems to be having. I guess I just got that one bad gun. I'm hoping RTI Arms / Rok may see this so the £2300 I've paid wasn't in vain & they step up as a reputable company & get this gun replaced.