- Mar 7, 2019
Need some new powder updates/additions with the 220 Swift. H4350, RL16, & N540 are doing an awesome job with the 50 & 55 grain bullets.
remingtonman_25_06":2mq1el1g said:Only 1 powder for the swift and that's IMR4064...
RAD57":1rvj83cn said:Need some new powder updates/additions with the 220 Swift. H4350, RL16, & N540 are doing an awesome job with the 50 & 55 grain bullets.
Welcome to the forum, 4000 + fps is smoking fast and a 10mm 5 shot group is amazing. You could reach out and touch those yotes easily with this flat shooting cartridge.Have you tried the Alliant Power Pro 2000-MR powder?
I use Nosler 55gn Ballistic tip projectiles with 41gns of Alliant 2000-MR powder and Remington 91/2 primers . This resulted in a 5 shot group of 10mm @ 100m.
My rifle is a Ruger M77V with a SS 28" barrel with a 1:12 twist. There are no signs of stress from the fired cases.
With the factory M77V, my standard load was 42gns of W760 with Sierra BPBT projectiles which resulted in an average 5 shot velocity of 4029fps and produced a very tight group. I haven't as yet chronographed the Alliant powder.
The best powder for a particular rifle can only be determined by loading and test firing a different powder combinations with a particular projectile.
Alliant 2000-MR used with the Nosler 55gn SPBT produced a 5 shot group of 38mm @ 100m
I use a custom built shooting table and a Calder Fire Control Full-Length rest. I have owned this rifle for over 40years.