I posted my R5M Standard up for sell here on AGN...the day I posted it up my NSA slugs came in the mail...wasn't goin to touch the gun since I posted it but I had to see if it would shot the slugs as good as my R5 Matador standard .30 does...low & behold it does...I tuned the gun to shoot the 26.8 grain NSA slugs at 900 by turning up the hammer spring...long story short a dime sized group at 50 yards with the 26.8 & the 29 grain NSA slugs...