Deernewbie
Member
- Joined
- Apr 4, 2023
- Messages
- 22
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- 8
PLEASE FORGIVE MY LONG WINDEDNESS!
I Have a CVA Accura MR-X .45cal, 26in barrel, 1:22 twist. I intend to shoot Powerbelt .45 ELR and other similar bullet to bore projectiles up to 310gn. (Parker black max hollow base looks interesting)
I recently acquired triple 7 FFFG powder (suggested for .45cal and below). The manual states this rifle is intended for loose powder and I believe states maximal loads for both triple 7 and blackhorn 209. I didn't see blackhorn to be as cost effective and dont mind cleaning. I intend to measure propellant by weight as I was under the impression this was best practice for consistency.
Online sources state that 77.7gn of triple 7 FFG by weight is equal to 100gn by volume, as its name implies, and that for the finer FFFG; 66.6gn by weight is equal to 100gn by volume. any idea which is true??
When I reached out to CVA they were only willing to provide load suggestions by weight for blackhorn 209, when I reached out to Hodgon it was suggested to only use volumetric measurements for loose propellants because they can weigh differently due to environmental changes. Both of these responses have merit but seem a bit conflicting as I thought measurement by weight was commonplace for loose blackhorn 209. If environmental changes affect weight/density this could presumably affect volume equally as well.
Should I be measuring triple 7 FFFG by weight? and if so how do I determine the appropriate volume equivalent?
Any responses and load suggestions are very much appreciated!
Rifle still remains unfired.
I Have a CVA Accura MR-X .45cal, 26in barrel, 1:22 twist. I intend to shoot Powerbelt .45 ELR and other similar bullet to bore projectiles up to 310gn. (Parker black max hollow base looks interesting)
I recently acquired triple 7 FFFG powder (suggested for .45cal and below). The manual states this rifle is intended for loose powder and I believe states maximal loads for both triple 7 and blackhorn 209. I didn't see blackhorn to be as cost effective and dont mind cleaning. I intend to measure propellant by weight as I was under the impression this was best practice for consistency.
Online sources state that 77.7gn of triple 7 FFG by weight is equal to 100gn by volume, as its name implies, and that for the finer FFFG; 66.6gn by weight is equal to 100gn by volume. any idea which is true??
When I reached out to CVA they were only willing to provide load suggestions by weight for blackhorn 209, when I reached out to Hodgon it was suggested to only use volumetric measurements for loose propellants because they can weigh differently due to environmental changes. Both of these responses have merit but seem a bit conflicting as I thought measurement by weight was commonplace for loose blackhorn 209. If environmental changes affect weight/density this could presumably affect volume equally as well.
Should I be measuring triple 7 FFFG by weight? and if so how do I determine the appropriate volume equivalent?
Any responses and load suggestions are very much appreciated!
Rifle still remains unfired.