I’ve got a load test to run on 175gr SMK’s and 178gr Hornady BTHP’s. I’ve actually had these for over a year waiting on day to test em all out and I’m hoping to go out this Friday. It’s on a 20” barreled stag but that’s negligible for the most part. If I do go out this Friday I’ll let you know how it goes.
I’ve got a load test to run on 175gr SMK’s and 178gr Hornady BTHP’s. I’ve actually had these for over a year waiting on day to test em all out and I’m hoping to go out this Friday. It’s on a 20” barreled stag but that’s negligible for the most part. If I do go out this Friday I’ll let you know how it goes.
I have Hornady Superformance 178 BTHP as well as the same bullet loaded to about 2500fps from the stock 18.6" barrel. I get a lot of primer leakage from the heavier bullets. It has lead to some pitting in my bolt face... I am in search of an adjustable gas block but it seems a quality unit is hard to find. Keep that in mind as you work up. I'd hate for someone else to have the same problem.
I have Hornady Superformance 178 BTHP as well as the same bullet loaded to about 2500fps from the stock 18.6" barrel. I get a lot of primer leakage from the heavier bullets. It has lead to some pitting in my bolt face... I am in search of an adjustable gas block but it seems a quality unit is hard to find. Keep that in mind as you work up. I'd hate for someone else to have the same problem.
I have Hornady Superformance 178 BTHP as well as the same bullet loaded to about 2500fps from the stock 18.6" barrel. I get a lot of primer leakage from the heavier bullets. It has lead to some pitting in my bolt face... I am in search of an adjustable gas block but it seems a quality unit is hard to find. Keep that in mind as you work up. I'd hate for someone else to have the same problem.
175 sierra tipped, imr 4064 42.5 gr, win large primer, win case.2.8 ''
Decent groups, never shot passed 200 y.
Tried small base die, did not see any difference as oppose to rcbs regular competition die
Regards
175g smk with 43g varget +/- works great.
175g smk with 43g varget +/- works great.
Superformance is your problem. They are very hot loads.
Look for an SLR sentry adjustable gas block. CTC supplies has them but you can also get them from brownells. They're expensive but quality. I've been running 175gr SMK's at around 2700 fps with varget and I haven't had any pierced primers with Federal GMM primers. Are you using a high pressure bolt?
Thats what i'm loading as well. What barrel and length are you using?
Thanks!
IMR 4064 is a little hotter than Varget, so 41.5gn of Varget would make a nice load dev start point.
What speed you launching them at?