salmonchaser
Ammo Smith
- Dec 13, 2013
- 6,276
- 9,390
Took the newly re-barreled 275 Rigby #1 and my 375 HH to the range today. I thought about running a ladder test with the 275 as it is a new barrel and initial examination had revealed that the chamber was to the tight end of Sammi specs. Instead I just loaded my favorite load 49.5 gr. Rl 17 with the bullet seated right at .1 off the lands. 3.085 if it matters. This load was pretty good in my worn out barrel, generating just a touch over 2900 fps with a 140 Accubonds. Average for 10 rounds was 2990 with an SD of 7.2. I allowed 3 minutes between shots to avoid over heating the barrel. I was happy with the 100 yard group. Then dialed for 400. I’m not touching a thing between now and elk season.
My 375 HH has been giving me fits trying to get a good load with 300 gr Swift A frames. We’ve done ok but I’m not happy. Loaded up some 300gr tsx with H4350, seated .05 off the lands which equals 3.755 in my #1. Generated 2600 fps and a group I can live with. The first three were damn near perfect so I broke with my 3shot #1 rule. Got two a little high. Need to pull her over and up an inch but she’ll hunt.
My PH was pretty insistent if I was going to hunt Cape Buffaloe with a single shot. Swift A frame or Barnes.
The barrel is a Pac Nor. I have four Pac Nors now they sure seem to shoot. Nice thing about Pac Nor is they do work on #1s and understand the critical dimensions of the first six inches of barrel so the 1/4 rib sits correctly.
My 375 HH has been giving me fits trying to get a good load with 300 gr Swift A frames. We’ve done ok but I’m not happy. Loaded up some 300gr tsx with H4350, seated .05 off the lands which equals 3.755 in my #1. Generated 2600 fps and a group I can live with. The first three were damn near perfect so I broke with my 3shot #1 rule. Got two a little high. Need to pull her over and up an inch but she’ll hunt.
My PH was pretty insistent if I was going to hunt Cape Buffaloe with a single shot. Swift A frame or Barnes.
The barrel is a Pac Nor. I have four Pac Nors now they sure seem to shoot. Nice thing about Pac Nor is they do work on #1s and understand the critical dimensions of the first six inches of barrel so the 1/4 rib sits correctly.
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