Bill Morton
Member
- Joined
- Oct 2, 2016
- Messages
- 1
I am an old guy (64) who has been out of the reloading game for a while and just getting back into said game. I don't really understand the differences between the powders listed in my title. I do understand that, "back in the day", there was a significant difference between the loading data for H4831 and IMR4831 (a couple of grains in the 6.5x55 Swedish Mauser in the load I preferred for accuracy and terminal performance on southern (TX) whitetailed deer). Again, "back in the day", late 60's early 70's, H4831 was slightly but significantly, "hotter (faster burning)", than IMR4831; confusing the loading data between the two on one occassion caused some rather surprising but fortunately non-injury results (a couple of, "blown primers", and a face full of the subsequent blow by gas - BTW, I still have 1 pound left out of the 50 lbs of military surplus H4831 my Dad bought in the mid 60's). Enough, "war stories". Can I expect the IMR4831 I bought yesterday to perform basically the same as the IMR4831 of 40 to 50 years ago using modern data? If not, would somebody please suggest a safe powder/charge combination for a 6.5X55 Swedesh load behind a 129 grain Hornady Spire point (yes, I have one box - 100 - of those left) that will produce a muzzle velocity of ~2600 fps? Thanks in advance for helping out an, "of"!