303-.311 flat base target bullet?

I use sierra pro-hunter 150gr spitzer #2300 it is a flat base 303 cal .311 dia fun to shoot good for hunting have fun
 
I have some Campro 303 - 180gr (.311) Soft Points in stock, also Hornady 303 - 150gr SP (.312) & 303 - 174GR RN. These are all Flat Base bullets.
Please check out my website.

Regards, Henry
 
It's a myth that Boat Tail bullets don't shoot well from a Lee Enfield because of the rifling that's employed. Few shoot well because of poor fit with the groove diameter which I've seen as high as 0.316". Flat Base bullets have the same poor fit but can "swage up" enough at their base upon firing to produce a good fit.

If there were 0.314" Boat Tail bullets available, we wouldn't be having these discussions. I made up some 0.316" Boat Tails by sizing down 0.323" (8mm) bullets and they shot well.

All said having Flat Base bullets like this available is a good thing.
 
smle #4 mark 1 shoot better then the smle #1 mark 3 but the best 303 brit rifle is the p14

Overly simplifying things.

Where the rifle was made, what rifling is used, actual bore dimensions, actual bullet dimensions.

Not all No 4 rifles will shoot better than all No 1 Mk III rifles and not all P14 rifles are more accurate than either of the other versions.

The Ross in 303 Brit was one of the most accurate rifles ever made in 303 British.
 
I have 2 rifles designed to shoot .311 - .314" bullets. One is a P14, that has the 303 EPPS chamber. This barrel slugs just over .313"
My 1910 Ross has been rebarrelled, so it is a .311 groove diameter pipe. The Epps has the original 1916 vintage barrel, but still will
shoot consistently around 1¼ - 1½ moa at 100 yards. It's preferred bullet is that Sierra Pro-Hunter 180, chased by IMR 4320 or VV N540.

The Ross is another story. It shoots most bullets I have tried so far under moa. [From the Speer 150 (.311") right up through Steve Redgwell's
200 grain FB (.3135") It really likes Reloder 15 or Ramshot Big Game, but shoots well with several powders around that burning rate.
I really enjoy shooting my 303's. The Epps has taken several deer, and has performed admirably. The Ross will hunt this fall. Dave.
 
I always had good luck with Hornady .312 flat base bullets in my Enfield rifles. And in worn bores boat tail bullets would shoot bigger groups. And the Hornady .312 flat base 174 round nose bullets would give the best accuracy in worn bores.

The Enfield rifles used ammunition loaded with cordite powder that contained more nitroglycerin than many pistol powders have today. And this hot burning powder caused throat erosion and one reason why flat base bullets shoot better in a worn bore. In fact this same cordite ammunition was banned for machine gun use because it would wear out barrels much faster.

The Enfield rifle used the Mk.7 flat base bullet ammunition and machine guns used Mk.8z rebated boat tail ammunition loaded with single base powder.

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In a rifle with a worn muzzle flat base bullets will shoot better than a boat tail bullet. This is because the flat base bullet will fill the bore when fired and kicked in the seat of the pants.
And the boat tail bullet will not fill the worn bore with throat erosion and a worn muzzle will cause the base of the bullet to tip when it leaves the bore.

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