Blown primers with H110?

[320pf]

Originally Posted by jefflaw45

I too have a Model 1 Sales upper.. 15gr of h110 behide a 150gr Remington PCL bullet seated to AR-15 length is about all I can go safely..

I get about 2000 fps with that load..

any more and I get blown primers loose pockets etc

My brass measures 1.360-1.363 when formed.

Bore doesn't appear rough, but haven't slugged it to measure constriction

Jeff,

Here are the reloading data from the SIERRA and HORNADAY reloading manuals for 150 gr bullets. The preformance of your load is not too far off from what one would expect. M-1 chambers tend to run a bit tight so your pressures come up with a bit less powder. So if you are getting ~2000 fps you are doing OK. That is about as much velocity that you can get with a 150gr bullet.

I have posted my reloading data on Reloaders Nest. Most of the loads listed under the "Not yet verified user loads" heading are mine.

http://reloadersnest.com/frontpage.asp?CaliberID=135

Here are the Sierra data. These data are from a 10-inch barrel. A 16-in barrel runs abou 230 fps faster.
150gr
Powder/Velocity--1400----1500---1600---1700---1800
AA-No.9 ----------12.4---- 13.4--- 14.4--- 15.5
2400 -------------13.4----- 14.1--- 14.8--- 15.7
Viht N110 --------11.8-----13.0--- 14.2----15.4-- 16.5
H110 -----------------------13.8--- 14.8--- 15.9-- 17.0
296 -------------------------13.8--- 14.8--- 15.9-- 17.0
Viht N120 --------15.1-----16.3----17.5--- 18.7
AA-1680 ----------14.7----16.0--- 17.4--- 18.8

Here are the Hornaday data. These data are from a 10-inch barrel. A 16-in barrel runs abou 230 fps faster.
150gr
Powder/Velocity--1500----1600---1650---1700--1750-- 1800-- 1850
2400 --------------12.9--- 13.7--- 14.2
AA-No.9 ----------13.0--- 13.9--- 14.3
Viht N110 --------13.1--- 14.3--- 14.9--- 15.5
296 ---------------13.2--- 14.4--- 15.1--- 15.7--- 16.4-- 17.0
H110 ------------ 13.5--- 14.6--- 15.2--- 15.7--- 16.2
IMR4227 --------- 14.4--- 15.3--- 16.1--- 16.6--- 17.0-- 17.4
AA-1680 --------- 15.9--- 17.0--- 17.6--- 18.2--- 18.8-- 19.4-- 20.0

I hope that this helps

320pf