So, with the DW game coming closer I was wondering...
Initially they set the Marine Bolter Damage at 2d10 X, Pen 5
Than in Rogue Trader they upped the Heavy Bolter (akin to the Marine Bolter in DH) to 2d10+2 X, Pen 5
Now with Ascension they increased the damage of the Bolter (the Executor Pistol) to 2d10+4 X, Pen 5
I doubt they will stay at 2d10 X, Pen 5 because they wouldn't be able to reasonably damage Chaos Space Marines.
Say the Chaos Space marine has a TB 8 and 8 AP (Armour in Purge the Unclean is supposed to be Artificer Armour)
2d10 averages 11 + a Pen of 5 would equal zero damage on average.
2d10+2 would average at 2 damage a hit and 2d10+4 would average at 4 damage...
How many wounds do marines have....20 to 30?