I've used this bullet successfully out to 1000 yards at Barton Road in Cambridgeshire. I used Varget which is no longer available so had to start with all the development again. I have had a lot of success with Reloader 15 which has almost identical characteristics to N140. What barrel length rifle are you using - and what range is the maximum you'll use it at? If it's long barrelled you may be able to use a slower powder to better effect ( I use a 20" Sako ). Let me know and I'll dig out my reloading diary and P.M. you.