BSA R10 MKII .177
 

BSA R10 MKII .177  

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MOT
 MOT
(@critter99)
Joined: 2 years ago
Posts: 25
2018-03-31 13:35:26  

Picked it up great deal had leaky regulator fixed it.  Excuse to get a HUMA Regulator as I was one of the earliest adopters of the BSA HUMA regulator in my .22 ...well and they just well work quite well.

 

What's the sweet spot on a R10 in .177 20 FPE??  No real trail to follow on the board anymore since the move 


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lugnut
(@lugnut)
Joined: 2 years ago
Posts: 4
2018-04-01 08:19:35  

I have adjusted my hammer spring to shoot JSB 10.34's at 880 fps. Stock regulator with fill to 200 bar and very consistent 9-15 ES over 40 shots. Accuracy is better than stock setting at 925 fps.


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ANGLIAUSA
(@angliausa)
Joined: 2 years ago
Posts: 64
2018-04-01 09:08:40  

I am doing the exact same except I am running a HUMA regulator in the action.

I am getting 50 shots and 19ft lbs with a 10ftlb spread over those shots.

 


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lugnut
(@lugnut)
Joined: 2 years ago
Posts: 4
2018-04-01 09:17:17  
Posted by: ANGLIAUSA

I am doing the exact same except I am running a HUMA regulator in the action.

I am getting 50 shots and 19ft lbs with a 10ftlb spread over those shots.

I may try the HUMA after my warranty expires(6 months) but for now the factory reg seems to be ok. What is your fill pressure?

 

 


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MOT
 MOT
(@critter99)
Joined: 2 years ago
Posts: 25
2018-04-01 09:45:34  

232 BAR fill start

let me run a string with Crosman heavies and see where its at.  Will report back 

 


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Andy H.
(@andyh44)
Joined: 2 years ago
Posts: 68
2018-04-01 10:33:51  
Posted by: MOT

232 BAR fill start

let me run a string with Crosman heavies and see where its at.  Will report back 

 

 

I found Crosman pellets to be more inconsistent than A-A or JSBs.  Also, they dirtied/leaded the bore much more and quicker.  IIRC, my R-10 really liked JSB 8.44 4.53s at 950~960 fps.


winston1 thanked
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ANGLIAUSA
(@angliausa)
Joined: 2 years ago
Posts: 64
2018-04-01 11:47:38  

I fill to 190bar  - I don't ever shoot Crossman pellets - they have a nasty chemical addition to the lead it fouls the barrel and you'll find it hard to properly clean the barrel once you start using them ...JSB or H&N pellets are the best for BSA barrels IMOP.

IMG 1614 zps7571ca00


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MOT
 MOT
(@critter99)
Joined: 2 years ago
Posts: 25
2018-04-01 21:34:58  
 JSB 10.34 1st 10 Shots 2nd 10 Shots 3rd 10 Shots 4th 10 Shots 5th 10 Shots
Min. 932.00 929.30 931.20 928.10 908.50
Max. 938.80 938.50 938.00 940.50 933.80
Average 935.43 935.04 934.65 933.76 922.66
Median 935.20 935.80 934.50 933.40 925.15
Extreme Spread 6.80 9.20 6.80 12.40 25.30
SD 2.16 3.13 2.17 3.29 8.63
Ave FT LBS 20.10 20.08 20.06 20.02 19.55
Cum FT LBS  200.96 200.79 200.62 200.24 195.52
           
Cumulative Statistics:      
  For the First: 20 shots 30 shots 40 shots 50 shots
  Min 929.30 929.30 928.10 908.50
  Max 938.80 938.80 940.50 940.50
  Average 935.24 935.04 934.72 932.31
  Median 935.40 935.20 934.85 933.85
  Extreme Spread 9.50 9.50 12.40 32.00
  SD 2.62 2.46 2.71 6.58
Cumulative Foot Pounds 401.75 602.37 802.61 998.13

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MOT
 MOT
(@critter99)
Joined: 2 years ago
Posts: 25
2018-04-01 21:37:18  

Results Jsb 13.43

  1st 10 Shots 2nd 10 Shots 3rd 10 Shots 4th 10 Shots
Min. 824.40 824.80 822.60 823.40
Max. 832.00 828.70 838.30 838.70
Average 828.72 826.95 829.21 829.53
Median 829.05 827.15 828.75 829.15
Extreme Spread 7.60 3.90 15.70 15.30
SD 2.32 1.35 4.04 4.21
Ave FT LBS 20.49 20.40 20.51 20.53
Cum FT LBS  204.86 203.98 205.10 205.26
         
Cumulative Statistics:    
  For the First: 20 shots 30 shots 40 shots
  Min 824.40 822.60 822.60
  Max 832.00 838.30 838.70
  Average 827.84 828.29 828.60
  Median 827.60 828.10 828.30
  Extreme Spread 7.60 15.70 16.10
  SD 2.06 2.88 3.25
Cumulative Foot Pounds 408.84 613.94 819.20

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MOT
 MOT
(@critter99)
Joined: 2 years ago
Posts: 25
2018-04-01 21:40:13  

CP 10.5 

  1st 10 Shots 2nd 10 Shots 3rd 10 Shots 4th 10 Shots
Min. 913.70 914.40 914.60 914.20
Max. 923.10 923.90 923.30 919.70
Average 919.28 918.32 917.86 916.35
Median 920.80 918.15 918.05 916.30
Extreme Spread 9.40 9.50 8.70 5.50
SD 3.00 3.02 2.75 1.96
Ave FT LBS 19.71 19.67 19.65 19.58
Cum FT LBS  197.08 196.67 196.47 195.83
         
Cumulative Statistics:    
  For the First: 20 shots 30 shots 40 shots
  Min 913.70 913.70 913.70
  Max 923.90 923.90 923.90
  Average 918.80 918.49 917.95
  Median 919.30 918.50 918.00
  Extreme Spread 10.20 10.20 10.20
  SD 2.97 2.89 2.82
Cumulative Foot Pounds 393.75 590.22 786.05

 


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