Results 1 to 10 of 19
Thread: Sierra 300gr in 375
-
28-09-2015, 21:39 #1
- Join Date
- Apr 2009
- Location
- South of the Chardonnay curtain
- Posts
- 1,451
Sierra 300gr in 375
Does anybody have experience shooting the Sierra 300gr Gameking in 375H&H? I want to load them for my H&H and I have heard good things regarding accuracy and terminal performance. A load of 64gr S355 is where I am looking.
-
28-09-2015, 21:50 #2
- Join Date
- Nov 2010
- Age
- 37
- Posts
- 2,290
Re: Sierra 300gr in 375
I helped my brother with load development on the same setup. Best load was at 65gr S335 which gave about 2450 fps if I remember correctly, agv group size consistent sub 1 MOA. He is extremely happy with the 300gr sierra GMK.
-
28-09-2015, 21:56 #3
- Join Date
- Jul 2011
- Location
- BFN Freestate
- Age
- 45
- Posts
- 12,151
Re: Sierra 300gr in 375
Methinks the load(64gr) is...............a bit weak.
-
28-09-2015, 22:24 #4
- Join Date
- Aug 2012
- Location
- Bryanston
- Posts
- 1,461
Re: Sierra 300gr in 375
Web I'm loading 67.5 @ 2438 on chrony with S355 lot 10 and that's with 300gr Vrg-3 peregrines "monometal" so they a bit longer than 300gr Sierras so 64 should be safe but rather start at about 62 and work up with a chrony! S355 is pretty constant compared to other powders of late (lot to lot), which lot is your S355 and what COL do you plan on using?
-
28-09-2015, 22:29 #5
- Join Date
- Apr 2009
- Location
- South of the Chardonnay curtain
- Posts
- 1,451
Re: Sierra 300gr in 375
I have locked up my reloading room but I will dig the info out tomorrow. I am certain 64 gr is safe but it might be a bit weak. I will be shooting with a chrony over the weekend and then I will know. I am hoping for around 2450 - 2500.
-
28-09-2015, 22:35 #6
- Join Date
- Aug 2012
- Location
- Bryanston
- Posts
- 1,461
Re: Sierra 300gr in 375
If its lot 10 S355, it will definitely be week but that's in my rifle at 63gr I was at 2289 on the chrony!
-
28-09-2015, 22:38 #7
- Join Date
- Apr 2009
- Location
- South of the Chardonnay curtain
- Posts
- 1,451
Re: Sierra 300gr in 375
I will look over the weekend. COL around the 90mm mark - will still play with that. The upper end of the scale with 355 is 67,5 gr
-
28-09-2015, 22:40 #8
- Join Date
- Apr 2009
- Location
- South of the Chardonnay curtain
- Posts
- 1,451
Re: Sierra 300gr in 375
I like the consistency of 355. I use it in my 243 with awesome results.
-
28-09-2015, 22:42 #9
- Join Date
- Aug 2012
- Location
- Bryanston
- Posts
- 1,461
Re: Sierra 300gr in 375
I also like the consistency, I bought lot 10 last year and bought another lot 10 a week ago.
-
28-09-2015, 22:45 #10
- Join Date
- Aug 2012
- Location
- Bryanston
- Posts
- 1,461
Re: Sierra 300gr in 375
Similar Threads
-
Sierra 165gr HPBT Gameking vs Sierra 150gr Prohunter (SPT) in .308
By Webster in forum General Hunting DiscussionReplies: 33Last Post: 05-08-2018, 20:39 -
[WANTED] Sierra 300gr SBT Bullets for 375H&H Wanted
By dsmerrills in forum Accessories Wanted (Parts, Magazines, Stocks, Scopes, Reloading etc.)Replies: 0Last Post: 18-10-2014, 21:54 -
bp 50 cal 300gr sst (hornady)
By Kleinboef in forum Black Powder and Muzzle LoadingReplies: 1Last Post: 17-08-2013, 20:25 -
375 300gr Sierra gameking
By Webster in forum Big Bore RiflesReplies: 5Last Post: 12-07-2013, 14:45 -
.375 Sierra 300gr gameking
By Webster in forum Reloading DiscussionsReplies: 5Last Post: 08-06-2013, 08:25
Bookmarks