I have been shooting Crossman Premier Hollow Points (14.3 gr) through my Benjamin Maximus PCP Air Rifle.  They seem to do good, but thought I'd try some other types of pellets.  Purchased the following pellets from Pyamyd Air:

  • JSB MATCH DIABOLO SAMPLER
    • DIABOLO EXACT JUMBO HEAVY (18.1 gr)
    • DIABOLO EXACT JUMBO MONSTER (25.4 gr)
    • DIABOLO EXACT JUMBO RS (13.4 gr)
    • DIABOLO STATON JUMBO (15.9 gr)
  • H&N Sport Crow Magnum (18.21 gr)
  • RWS Superdome (14.5 gr)
  • RWS Super-H-Point (14.2 gr)
  • Gamo Rocket Superior (14.3 gr)

Then I went target shooting...

 

Well, every doing a whole lot of shooting, I'm not sure what to make of my results.  I think my grouping (or lack thereof) has to do with me moving.  And I think the moving is mostly due to the heavy trigger of the Maximus.  So, I did two things:

Make the Disco Trigger mod were I replaced the trigger spring with one from a ink pen.  Installed the two 6-32 screws, one to adjust how much I need to pull on the trigger before the rifle fires, the other to control how far the trigger travels after the rifle has fired.  The trigger is now WAY better than before.  I still wish the trigger was further back towards the safety when it releases, but at least it's not has hard to pull.

Built a homemade rifle holder and used C-Clamps to hold it to the railing.  But instead of describing what I did, where is a picture:

Does seem to hold the rifle better now.

While my rifle holder seems to be working better than I do, it's not easist to adjust, so the rifle isn't also zerod on the target, but that's OK, as these test are only to measure my grouping for the various pellets.

All of the following tests were done at  25 yards and with a slight down angle.

Gamo Rocket Superior (14.3 gr)

 

H&N Sport Crow Magnum (18.21 gr)
Starting Pressure: 2000psi
Ending Pressure: 1200 psi
Crossman Premier Hollow Points (14.3 gr)

 

 RWS Superdome (14.5 gr)

Not sure what happen on the one wild shot in group two.

Starting Pressure: 2100 psi

Ending Pressure: 1400 pis

Number of shots: 30

 

 RWS Super-H-Point (14.2 gr)  
JSB MATCH  DIABOLO EXACT JUMBO HEAVY (18.1 gr)  
JSB MATCH DIABOLO EXACT JUMBO MONSTER (25.4 gr)  
JSB MATCH DIABOLO EXACT JUMBO RS (13.4 gr)  
JSB MATCH  DIABOLO STATON JUMBO (15.9 gr)  

 

 

 

 

 

 

 

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