WyleWD
Silver $$ Contributor
Thank you VERY much for sharing all that. I appreciate it. WDMildly double-based (4.5% nitroglycerin IIRC) and short cut extruded powders. According to Norma's burn-rate chart - which is of a completely different type to everybody else's based on same charge weight of each powder in a 308 Win load tested for pressure/MV and indexed against IMR-4350 - N201 is close to H4895 and N202 is only slightly faster burning than 203-B/Re15 (but the latter has a higher nitroglycerin level). That makes 202 maybe close to VarGet, bit faster burning if there is a difference.
https://www.norma-ammunition.com/en-gb/reloading-data
You'll find the burn rate chart in here.
I'd say N201 is faster burning than H4895 though in practical terms. I wouldn't want to load it up as much. Same applications such as 222 and 223 Rem, the latter with lighter bullets up to 55gn and thereabouts. For heavier bullets in 223 and standard / mid-weight bullets in 308 Win N202 is better and/or 203-B/Re15 beyond a certain point. I had good, but not my very best results with 223 and the 77gn SMK in a longer than Wylde chamber and long-barrel F rifle with 202. 0.4gn less than my top H4895 'benchmark' charge gave similar MVs. I have yet to try 201 in this rifle with the 77.