Browning's web site has what you are looking for.
Browning has made centerfire lever action rifles in various calibers over the decades.
Belgium
Browning BLR is chambered in 30.06 and many other calibers.
Your Browning safari model bolt action rifle was made by FN of Belguim for Browning in the Year 1963.
50-1000 usd
Your Browning model safari bolt action rifle was made by FN of belguim for Browning in 1969,with the serial number that you provided.
Sometimes by the complete sn, sometimes by the action and features.
Your browning safari bolt action rifle was made in 1970.
The prefix of L70 indicates that your Browning safari bolt action rifle was made in the year 1970.
For a specific answer, please provide the model number. Most guns stopped production in Belgium in the 1970.
To my knowledge Browning never released production figures by caliber.I know that the .284 Win.was made in the A-bolt hunter model,A-bolt hunter medallion model,and the A-bolt Micro-Medallion model.The Browning BLR was first introduced in 1971. Made in Belgium it was available only in .243W or .308W calibers. Production moved to Japan sometime during late 1973 or early 1974. In 1976 the .358 Win was added to the BLR lineup. In the 1982 Catalog, the BLR had a new name. Browning Introduced the "New" Model 81 BLR. In addition to the 243, 308, and 358, the .22-250 was introduced. Two more BLR calibers were introduced in 1983: The .257 Roberts and 7mm-08. In 1985 the .222Rem and the .223Rem were added for a total of 8 different BLR calibers In 1989, Browning added one more caliber to the BLR lineup: The .284 Winchester for a total of nine choices. The 1990 catalog shows the .222-Rem being dropped. In 1992 Browning introduced the 81 BLR Long Action and made it available in .30-06, 7mm Rem Mag and .270 Win. All of the other eight calibers remained and were available in the 81 BLR Short Action. In 1993 The .257 Roberts and the .358 were dropped from production. 1995 was the last year for the 81 BLR Long and Short action models. The new Lightning BLR was being introduced and several of the short action calibers were discontinued in 1996, including the .284 Win. So, after much research, the answer to the question is that the Browning BLR was chambered for the .284 Winchester - begining in 1989 and last made in 1995 for a total of seven years.Proprietary information not in the public domain.
Remington produces lever action rifles primarily in calibers such as .30-30 Winchester, .45 Colt, and .357 Magnum. These calibers are popular for various applications, including hunting and sport shooting. The specific models may vary, so it's essential to check the latest offerings from Remington for the most current information on available calibers.