25sst finally breaking it in

[rockwallraider]

Finally got a chance to break in my 25 SST. Just going to start with 55 grains of H1000 to break in new brass. Shot once cleaned shot once cleaned and then 3 shots at 100 to zero. Here they are. Not a bad start. Gonna be a really fun gun to shoot.

 

[couesaddict]

Looking good so far!

 

[rockwallraider]

Looking good so far!

Have you tried rl23? N565?

 

[couesaddict]

Still waiting on my barrel from hell's canyon. I've got a pound of 23 and 8 pounds of 565 to try along with a bunch of h-1000 though. I was thinking of starting 565 around 56 grains personally just from a little reading about how it burns compared to rl26 but with that being said, rich's advise has never steered me wrong so 59 like he said may be a good place to start. 565 pressured out within a grain of 26 in my 270 sherman with about 30fps slower speed when I did a quick test with it the other day.

 

[elkaholic]

Actually, I thought about it a little more and I think you SHOULD start a little lower. 56-57 might be better.

 

[rockwallraider]

Here is 15-20 bullets through the barrel. 5 shot group at 100

 

[mmgravy]

Here is 15-20 bullets through the barrel. 5 shot group at 100
View attachment 143949

Sweet!!

 

[elkaholic]

Looks Like its gonna shoot!

 

[OrionsStar]

I Like It!

 

[19elkhunter51]

Before I ask the question please excuse my ignorance. What is a 25 SST?

 

[elkaholic]

Before I ask the question please excuse my ignorance. What is a 25 SST?

Its a shortened saum case with minimal body taper. It has 70 grain capacity and will run the 131 north of 3300' with a 2.860" coal to the lands.

 

[elkaholic]

Its a shortened saum case with minimal body taper. It has 70 grain capacity and will run the 131 north of 3300' with a 2.860" coal to the lands.

stands for: Sherman Short Tactical

 

[YZ-80]

Its a shortened saum case with minimal body taper. It has 70 grain capacity and will run the 131 north of 3300' with a 2.860" coal to the lands.

Holy cow! How is it on barrels?

 

[elkaholic]

Holy cow! How is it on barrels?

it should be very similar to the 6.5 version which weve had for a few years. Barrel life depends on several factors including long shot strings causing excessive heat and high pressure loads, etc. In the 6.5 weve had a low of 1500 in PRS and upwards of 2500.