I finally found a 4.25'' M69 a couple weeks ago. Finally had a chance to test it out.
The gun had a factory trigger pull of 4-3/4 to 5lbs. I changed the trigger return spring,which dropped to a nice 3-1/4lbs. To eliminate as much human error as possible, I mounted a Burris Fastfire 3 on it.
All testing was done @ 25yds, over sand bags. Temp.was 28-30 deg. and overcast.
I shot all plain base bullets first,with no cleaning during. I was going to clean the barrel after the plain base bullets, But checking the barrel for leading, there was none. So I continued on with the gas checked loads. After a total of 105 rounds, there was barely any leading!!!
Saeco 200gr. TC 7grs/W231
Group 1 - 1.03" 849fps es.38
2- 1.53" 831fps es.49
Lyman 429-421/250grs/ 8 gr/Unique
Group 1- 1.80" 871fps es.46
2- 1.11 864fps es. 31
Rcbs 250K- 253gr 8gr/Unique
Group 1 1.81" 892fps es28
2 1.47" 899fps es 39
H&G 503 Orginal 255gr 8gr/ Unique
Group 1 2.26" 858fpe es 49
2 1.325" 874fps es63
Gas Checked Bullets
ALL LOADED WITH 9grs of Unique !
NOE 240FN-GC
Group 1 - 1.64" 1027fps es57
2- 3.94" 1020fps es 34
Arsenal 429421 GC version
Group 1 -0.78" 1031fps es 47
2 -0.97" 1017fps es27
RCBS 225SWC-GC
Group 1 -1.27" 1033fps es 59
2- 1.55" 1 14fps es40
Lyman 429-215
Group 1 0.92" 1048fps
2- 1.74" 1043fps es58
Lyman 429-244
Group 1-1.6" 990fps es13
2 - 1.75" 987" es62
So far I've been pleased and impressed with the results.
BigboreShooter