Originally Posted by Tikkamike
My lymann and nosler manual both list 70.5 grains of H4831 as max. The first sign of pressure I had was primer pockets getting a little loose at 75.5 grains after about 3 reloads so I backed off to 75 and have not had any issues at all. bolt lift is good no head expansion not shiny spots on the case head my velocity looks good too. im at 2940 fps. I do have my bullet seated way out so my powder capacity is a little more than average. it just barely fits in my magazine. But it is shooting good I am still tinkining with it but I feel like my 75 grains is safe. I am very cautious of pressure cause its not worth the risk to me.
Mike Thanks so much for your reply. Is this a custom rifle
? If so what reamer was used standard or match?
Sorry for all the questions, I had a friend run a "quick load" on my 300 win with a 28" custom barrel and a match reamer and the pressure was off the chart at 76 grains H-4831.
Maybe we missed something ??
Can anyone give us quick load pressure on this?
Thanks Mike and anyone that can help here.