crap, i got the wrong primers

kevin.303

kevin.303

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sitting here reloading .303 british, and i realized i grabbed large magnum primers instead of regular primers. are they safe to use still? my load is 43 grains of H4350 under a sierra 180 spitzer
 
Hodgdon's on-line reloading data suggests:
303 BRITISH
CASE: REMINGTON
BBL: 24"
PR: FEDERAL 210
180 GR. SIE SP
COL: 3.075"

H4350 48.0g (Compressed)
2500 fps
43,800 CUP
FEDERAL 210

Since you're well below that with a 43.0 grain load (~10% less), you'll probably be OK.


Here's a quote from a site that talks about exterior ballistics:
Large Rifle Magnum primers are made specifically for the larger charges of very slow burning powders common to the bigger magnum rifle cartridges. It is perhaps worth mentioning that some of this class of primers have been developed for very specific applications. The Federal 215 primer, for example, was designed to reliably ignite the massive powder charges associated with the Weatherby line of magnum cartridges. These should be used as shown in the loading tables, and must not be randomly substituted for standard large rifle primers. With their sharper ignition characteristics, they will frequently give higher pressures than a standard primer used in an otherwise identical load. As is true with the “Standard” large rifle primers, the “Magnum” designation does not necessarily preclude the use of these primers in non-magnum cartridges, but the load must be worked up again when primers are substituted.
Click to expand...
 
A-zone said:
Hodgdon's on-line reloading data suggests:
303 BRITISH
CASE: REMINGTON
BBL: 24"
PR: FEDERAL 210
180 GR. SIE SP
COL: 3.075"

H4350 48.0g (Compressed)
2500 fps
43,800 CUP
FEDERAL 210

Since you're well below that with a 43.0 grain load (~10% less), you'll probably be OK.


Here's a quote from a site that talks about exterior ballistics:
Click to expand...
X2. I have to agree.
 
In my tests the magnum primers CCI250 went slower than the CCI 200s

The powder you are using is rather slow for the 303,so your pressures are going to be low,so even in a SMLE,you are going to be safe.Going by memory,getting faulty,42.0gr of IMR 4064 went 2200 under a 180,close to factory.A full case of Varget,that might be a different story.
 
i have to go back to wholesale anyways, considering i work there everyday, so i think i'll just wait till tomorrow, get the regular primers and do it right.
 
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