Quote:
Originally Posted by lsufrank
Hello I am new to this forum. I have a Model 1 barrel on order in 300 Whisper and I already have my dies. I have looked all over the internet for load data and I have a question about loads using 110 grain bullets. The only 110 grain load data I have found is at Reloadersnest.com and in the Sierra Manual in the SSP section. The velocities for a 110 grain bullet shown are basically the same as a 125 grain. Using the reloading rules of thumb, you would expect about a 6% gain in velocity for a 110 grain load over a 125 grain load at the same pressure level. I do not see this in the data. Does anyone know why? I am only talking about supersonic loads. That is all I plan on shooting.
Thanks
lsufrank
|
Isufrank,
I think that you should recheck your sources. The control conditions for the reloadersnest data may not be as tight as the control conditions for the Sierra and Hornaday data. So I would not use them for comparison.
The load data for 110 gr bullets from the Sierra and Hornaday results are indeed about 6% (150 fps) faster than the 125 gr data... Just like you would expect. Does this answer your questions?
Here are the Sierra data. These data are from a 10-inch barrel.
110gr RN
110gr FMJ
110gr HP
Powder/Velocity--1700--1800--1900--2000--2100--2150
AA-No.5---------- 11.5--12.3--13.1--13.8
AA-No.7---------- 13.2--14.0--14.8--15.5
AA-No.9---------- 14.5--15.2--16.0--16.7--17.5
2400------------- 14.1--15.1--16.1--17.1
Viht N110-------- 13.6--14.8--16.0--17.2--18.4--19.0
H110------------- ------16.4--17.4--18.4--19.3--19.8
296---------- --------- ----- 17.3--18.4--19.5--20.1
125gr SPT
125gr HP/FN
Powder/Velocity --1700 --1800 --1850 --1900 --1950 --2000
AA-No.5 ----------11.7 --12.6
AA-No.7 ----------13.7 --14.5
AA-No.9 ----------14.4 --15.6 --16.2
2400 -------------15.0 --15.9 --16.3
Viht N110 --------13.7 --15.1 --15.7 --16.4 --17.0 --17.7
H110 -------------14.9 --16.3 --17.0 --17.7 --18.4 --19.0
296 ---------------------16.3 --17.0 --17.7 --18.4 --19.0
Here are the Hornaday data. These data are from a 10-inch barrel.
110gr V-Max
110gr SP
110gr FMJ
110gr RN
Powder/Velocity--1700--1800--1900--2000--2050--2100--2150
2400------------- 14.1--14.8--15.5--16.3
AA-No.9---------- ------14.4--15.7--17.0
Viht N110-------- 13.8--15.1--16.3--17.5--18.1
H110------------- ------16.3--17.5--18.7--19.3--19.8--20.4
296---------- --------- 16.6--17.7--18.8--19.3--19.8--20.3
130gr SP
130gr SP,SSP
Powder/Velocity--1600--1700--1800--1850--1900--1950--2000
2400------------- 13.2--14.1--14.9--15.4
AA-No.9---------- 13.1--14.1--15.1
Viht N110-------- 13.0--14.3--15.6--16.2--16.8
W296------------- 13.5--14.8--16.2--16.8--17.5--18.2
H110------------- 13.8--15.0--16.2--16.8--17.4--18.0--18.5
IMR4227-----------15.7--16.7--17.6--18.1--18.5--19.0
AA1680---------- 17.2--18.4--19.6--20.2--20.8
I hope this helps,
320pf
Linear Mode
