Recently picked up Rainier Ballistics as a sponsor and got a load of 124gr RN plated bullets to try out in my Open Gun. Brought it out to the range today to test and I was very disappointed. They didn’t perform as expected but found out the problem later when I went home.
here’s the two groups of 5 shots that I made comparing Rainier 124gr RNs to Montana Gold 124gr CMJ Jacketed bullets. These are shot with 8.2gr Hodgdon HS-6, Winchester SRP, Various once fired brass at 20 yards.
as you can see, the Montana Gold bullets group really nicely whereas the Rainier’s are all over the place, if they actually hit. I only managed to get 3 out of 5 shots on paper.
I’ve also measured the sizes of the plated bullets vs jacketed and the MG Jacketed bullets (out of ten) come in at .355 consistently while Rainer’s come in mostly at .3545.
I consulted my panel of experts and was asked to pull the bullet to see if I’ve over crimped the bullets. Jacketed bullets have a harder shell and are more resistant to crimping, while plated is a soft coating and very easy to dent.
here’s how the bullet looks like after pulling it, as you can see, severe dent from over crimping.
I readjusted my crimp die and now manage to crimp the bullet without marring the bullet.
I’m now looking forward to testing this new batch of ammo to see if I can get as good a group as the Montana Gold jacketed bullets. I’ll be a happy camper if it works!