can you confirm this
04-18-2011, 05:51 PM
#4
Typical Buck
Join Date: Feb 2011
Location: MD/PA Line
Posts: 598
http://findarticles.com/p/articles/m...8/ai_87413404/
Sway on the side of caution and call Hodgdon. The article says 60gr by volume not weight of T7.
Sway on the side of caution and call Hodgdon. The article says 60gr by volume not weight of T7.
04-18-2011, 06:04 PM
#5
Giant Nontypical
Join Date: Feb 2011
Location: Colorado
Posts: 9,557
Maybe start with 55 gr to be safe.
04-18-2011, 07:39 PM
#7
Giant Nontypical
Join Date: Mar 2010
Posts: 5,605
I found this
And this
I just got the Hogdon Basic reloaders Manual in the mail....
for 777 in Big Bold Letters
WARNING: NO COMPRESSION SHOULD BE USED WITH Triple Seven
All powder charges are measured by VOLUME
you can use one card wad filler of .030 between the base of the bullet and the powder charge.
It does list a loading for a 500g bullet #457125 at 55gr of 777 and a 845g LFP bullet at 60gr45-70 Govt. 405 Gr. Cast LFP Triple Seven FFG 60.0 Gr. 1260 -
45-70 485 Gr. Cast LFP Triple Seven FFG 60.0 Gr. 1161 -
for 777 in Big Bold Letters
WARNING: NO COMPRESSION SHOULD BE USED WITH Triple Seven
All powder charges are measured by VOLUME
you can use one card wad filler of .030 between the base of the bullet and the powder charge.
It does list a loading for a 500g bullet #457125 at 55gr of 777 and a 845g LFP bullet at 60gr45-70 Govt. 405 Gr. Cast LFP Triple Seven FFG 60.0 Gr. 1260 -
45-70 485 Gr. Cast LFP Triple Seven FFG 60.0 Gr. 1161 -
Here's some test results with H777 60gr and the DD/PRS 400gr (actual in the 385gr range) out of a H&R BC
All 50yds through the Chrono:
Average Velocity ... Average Group
1361fps ...................0.856" (1:20 ratio - 0.030 card wad) - Crimped
1409 ...................... 0.215 (1:30 ratio - 0.030 card wad) - Crimped
1361 ...................... 0.993 (1:20 ratio - No Card) - Crimped
1421 ...................... 1.522
1410 ...................... 1.230
All 50yds through the Chrono:
Average Velocity ... Average Group
1361fps ...................0.856" (1:20 ratio - 0.030 card wad) - Crimped
1409 ...................... 0.215 (1:30 ratio - 0.030 card wad) - Crimped
1361 ...................... 0.993 (1:20 ratio - No Card) - Crimped
1421 ...................... 1.522
1410 ...................... 1.230
04-18-2011, 07:42 PM
#8
Nontypical Buck
Join Date: Aug 2006
Location: Rivesville, WV
Posts: 3,192
Be careful, and go slow if you are new to this.
T7 forms a crud ring in BP rifles. And it also forms a crud ring in the base of your brass on the inside. And this can lead to big problems. So go slow and be careful here.
Join a couple of BPCR forums and learn how the guys who are shooting T7 are doing it. There is a lot more to it than just selecting an amount of powder like you do with smokeless.
If you already know all this then please accept my apology. I do not mean to rant on. But if you are new to this, and especially if you are new to BPCR, then you are starting out with the wrong powder.
Other guys on here know more about this than I. But I believe T-7 is a sugar based product that will leave a crud ring in the bottom of your case. This changes the volume of the case. And in a cased cartridge, volume is EVERYTHING. Go slow, and spend a bunch of time researching this.
And yes I realize that is what you are doing by asking this question. But IMO nothing is more important than safety. And I still double check everything I do for safety. And I have been doing it for over 40 years. And I would much rather have someone irritated with my post, than to see someone get hurt. And when you change the volume is a cased cartridge it is real easy to get hurt. Tom.
T7 forms a crud ring in BP rifles. And it also forms a crud ring in the base of your brass on the inside. And this can lead to big problems. So go slow and be careful here.
Join a couple of BPCR forums and learn how the guys who are shooting T7 are doing it. There is a lot more to it than just selecting an amount of powder like you do with smokeless.
If you already know all this then please accept my apology. I do not mean to rant on. But if you are new to this, and especially if you are new to BPCR, then you are starting out with the wrong powder.
Other guys on here know more about this than I. But I believe T-7 is a sugar based product that will leave a crud ring in the bottom of your case. This changes the volume of the case. And in a cased cartridge, volume is EVERYTHING. Go slow, and spend a bunch of time researching this.
And yes I realize that is what you are doing by asking this question. But IMO nothing is more important than safety. And I still double check everything I do for safety. And I have been doing it for over 40 years. And I would much rather have someone irritated with my post, than to see someone get hurt. And when you change the volume is a cased cartridge it is real easy to get hurt. Tom.
04-19-2011, 04:13 PM
#9
Boone & Crockett
Join Date: Jan 2004
Location: Eastern PA
Posts: 12,746
I have 3 45-70s and keep contemplating using a BP load but I don't want to get that residue down into the action of my Marlin. Maybe the Browning 78 or Ruger #1 would be easy to clean. Just don't want to risk it.
04-19-2011, 04:22 PM
#10
Boone & Crockett
Join Date: Apr 2007
Location: River Ridge, LA (Suburb of New Orleans)
Posts: 10,917
I've gone through the same deliberation with my Browning 1885 45-70. Just couldn't do it and decided to stick to IMR 3031.
Last edited by Semisane; 04-20-2011 at 02:03 AM.